CN101860349A - Temperature deviation function generator, zero position and magnification temperature deviation adjuster and general temperature compensator - Google Patents
Temperature deviation function generator, zero position and magnification temperature deviation adjuster and general temperature compensator Download PDFInfo
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Abstract
本发明涉及温偏函数发生器和零位与倍率温偏调整器及通用温度补偿器，属信号变换、自动控制与测量技术领域。温偏函数发生器由运放、热敏元件、电阻、电位器等组成，可调倍率温偏发生器由温偏函数发生器与增益可调放大器组成，可调零位温偏发生器由温偏函数发生器或者可调倍率温偏发生器构成，零位温偏调整器由零位调合电路与可调零位温偏发生器组成，倍率温偏调整器由倍率调合电路与可调倍率温偏发生器组成，通用温度补偿器则由零位温偏调整器与倍率温偏调整器组成。温偏函数发生器及温度补偿器通过不同热敏特性的器件与不同处理电路的配合实现多样的温度补偿特性，可以满足多种测控电路或装置的需要。
The invention relates to a temperature deviation function generator, a zero position and magnification temperature deviation regulator and a general temperature compensator, and belongs to the technical field of signal conversion, automatic control and measurement. The temperature bias function generator is composed of operational amplifiers, thermal elements, resistors, potentiometers, etc. The adjustable rate temperature bias generator is composed of a temperature bias function generator and a gain-adjustable amplifier. The adjustable zero temperature bias generator is composed of temperature The partial function generator or the adjustable temperature bias generator is composed of the zero temperature bias adjuster composed of the zero blending circuit and the adjustable zero temperature bias generator. The multiplier temperature deviation generator is composed of the general temperature compensator which is composed of the zero temperature deviation adjuster and the multiplier temperature deviation adjuster. The temperature deviation function generator and temperature compensator realize various temperature compensation characteristics through the cooperation of devices with different thermal characteristics and different processing circuits, which can meet the needs of various measurement and control circuits or devices.
Description
Technical field
The present invention relates to warm partial function generator and zero-bit and multiplying power temperature bias regulator and common temperature compensator, the warm partial function generator and the common temperature compensator that particularly adopt analog circuit to realize belong to signal transformation, control and field of measuring technique automatically.
Background technology
Links such as transducer, measuring circuit, signal processing often adopt semiconductor device, comparatively responsive to variation of temperature, cause under different temperatures, measuring the error of exclusive disjunction, and the error that causes owing to variations in temperature need be avoided as far as possible or reduce in measuring instrument or equipment.
The error that variations in temperature causes, promptly output signal is owing to variations in temperature causes departing from original numerical value, the function of temperature normally, the situation of departing from is usually expressed as zero drift and multiplying power skew, as shown in Figure 1a; Sometimes its former multiplying power also shows positive and negative different situation, shown in Fig. 1 b, need be proofreaied and correct by adjusting, compensating.
Temperature-compensating is reduction or avoids variations in temperature to cause the important method of error that the error that variations in temperature causes also needs to use device or circuit to the variations in temperature sensitivity to revise.Its temperature of temperature drift function generator commonly used becomes characteristic and sensory characteristic is regulated simultaneously, and it is convenient inadequately to use; And conventional temperature compensator versatility is relatively poor, because zero-bit temperature-compensating and multiplying power temperature-compensating are coupled, causes the parameter tuning of temperature compensator comparatively difficult.
Summary of the invention
The purpose of this invention is to provide the warm partial function generator realized with analog circuit, zero-bit and multiplying power temperature bias regulator and Zero Temperature that band is adjusted function separate compensation adjustment partially partially with the multiplying power temperature common temperature compensator, inclined to one side and multiplying power temperature offset compensation intercouples and causes the problem of difficulty of parameter tuning owing to Zero Temperature in solution.
The objective of the invention is to be achieved through the following technical solutions.
The multiplication factor of temperature partial function generator or output voltage and variations in temperature are functional relation, temperature partial function generator is the adjustable multiplying power temperature important component part of generator partially, and the inclined to one side generator of warm partial function generator or adjustable multiplying power temperature is the chief component of the inclined to one side generator of adjustable Zero Temperature, adjustable multiplying power temperature generator partially also is the important component part of multiplying power temperature bias regulator, the inclined to one side generator of adjustable Zero Temperature is the important component part of Zero Temperature bias regulator, and the common temperature compensator then is made of Zero Temperature bias regulator and multiplying power temperature bias regulator.
A kind of temperature partial function generator has an input, an output; Temperature partial function generator is made up of amplifier, temperature-sensitive element, potentiometer and a plurality of resistance, the in-phase input end of amplifier connects the sliding end of potentiometer, two stiff end one ends of potentiometer pass through grounding through resistance by input, the other end that resistance connects warm partial function generator, the inverting input of amplifier connects the input and the output that connects amplifier of warm partial function generator respectively by two temperature-sensitive elements or temperature-sensitive element of a resistance, the output termination of amplifier is the output of warm partial function generator.
Temperature partial function generator is according to different common proportional type and two kinds of forms of voltage-type of the temperature-sensitive element of being adopted, the temperature-sensitive element of proportional-type temperature partial function generator adopts thermistor usually, and the temperature-sensitive element of voltage-type temperature partial function generator adopts diode or voltage-stabiliser tube usually.Temperature-sensitive element also can adopt two end temperature-sensitive devices of other form as required.
The magnification ratio or the output voltage of temperature partial function generator are the function of temperature, the magnification ratio of temperature partial function generator or Adjustable Output Voltage are zero when normal temperature, when being applied to the common temperature compensator and when normal temperature, being unlikely to have influence on the multiplication factor of whole system and variations in temperature whole system the zero-bit output voltage.
A kind of inclined to one side generator of adjustable multiplying power temperature that contains warm partial function generator has an input, an output; Adjustable multiplying power temperature generator partially is made up of warm partial function generator and gain adjustable amplifier, and gain adjustable amplifier has an input and an output, and the size of its voltage amplification factor can be regulated as required; The input termination of temperature partial function generator is the adjustable multiplying power temperature input of generator partially, the input of the output termination gain adjustable amplifier of warm partial function generator, and the output termination of gain adjustable amplifier is the adjustable multiplying power temperature output of generator partially.
Described gain adjustable amplifier can adopt the bipolarity gain adjustable amplifier, voltage-type bipolarity gain adjustable amplifier, reduced form bipolarity gain adjustable amplifier, current mode bipolarity gain adjustable amplifier, multiplication type bipolarity gain adjustable amplifier, tracking type bipolarity gain adjustable amplifier is arranged, divide accent type bipolarity gain adjustable amplifier six kinds of forms according to the difference bipolarity gain adjustable amplifier of structure or function:
Voltage-type bipolarity gain adjustable amplifier is made up of amplifier, potentiometer and a plurality of resistance, the in-phase input end of amplifier connects the sliding end of potentiometer by resistance, input, other end ground connection that two stiff end one terminations of potentiometer are the bipolarity gain adjustable amplifier, the inverting input of amplifier by resistance connect amplifier output, by the parallel circuits of resistance or resistance connect the bipolarity gain adjustable amplifier input, and by grounding through resistance, the output termination of amplifier is the output of bipolarity gain adjustable amplifier.
Reduced form bipolarity gain adjustable amplifier is made up of amplifier, potentiometer and a plurality of resistance, the in-phase input end of amplifier connects the sliding end of potentiometer, input, other end ground connection that two stiff end one terminations of potentiometer are the bipolarity gain adjustable amplifier, the inverting input of amplifier by resistance connect the bipolarity gain adjustable amplifier input, connect the output of amplifier by grounding through resistance and by resistance, the output termination of amplifier is the output of bipolarity gain adjustable amplifier.
Current mode bipolarity gain adjustable amplifier is by amplifier, potentiometer and a plurality of resistance are formed, the in-phase input end of amplifier connects the input of bipolarity gain adjustable amplifier by resistance, pass through grounding through resistance, the inverting input of amplifier connects the sliding end of potentiometer, connect the input of bipolarity gain adjustable amplifier by resistance, and connect the output of amplifier by resistance, two stiff end one ends of potentiometer connect the input of bipolarity gain adjustable amplifier by resistance, the other end is by grounding through resistance, and the output termination of amplifier is the output of bipolarity gain adjustable amplifier.
Multiplication type bipolarity gain adjustable amplifier, form by analog multiplier, potentiometer and a plurality of resistance, analog multiplier has two inputs, an output, the first input end of analog multiplier connects the input into the bipolarity gain adjustable amplifier, the sliding end of the second input termination potentiometer of analog multiplier, two stiff ends of potentiometer connect positive supply, negative supply or generating positive and negative voltage benchmark by resistance respectively, and the output termination of analog multiplier is the output of bipolarity gain adjustable amplifier.
Tracking type bipolarity gain adjustable amplifier is by two amplifiers, potentiometer and a plurality of resistance are formed, the in-phase input end of first amplifier passes through grounding through resistance, the inverting input of first amplifier connects the input of bipolarity gain adjustable amplifier by resistance, connect a stiff end of potentiometer by resistance, the output of slip termination first amplifier of potentiometer, the in-phase input end of second amplifier passes through grounding through resistance, the inverting input of second amplifier connects another stiff end of potentiometer by resistance, connect the input of bipolarity gain adjustable amplifier by resistance, connect the output of second amplifier by resistance, the output termination of second amplifier is the output of bipolarity gain adjustable amplifier.
Divide accent type bipolarity gain adjustable amplifier by two amplifiers, two diodes, two potentiometers and a plurality of resistance are formed, the in-phase input end of first amplifier passes through grounding through resistance, the inverting input of first amplifier connects the input of bipolarity gain adjustable amplifier by resistance, connect a stiff end of two potentiometers respectively by two resistance, the sliding end of two potentiometers connects the output of first amplifier by two diodes, the side pole that two diodes link to each other is opposite, the in-phase input end of second amplifier passes through grounding through resistance, the inverting input of second amplifier connects another stiff end of two potentiometers respectively by two resistance, connect the input of bipolarity gain adjustable amplifier by resistance, and connecing the output of second amplifier by resistance, the output termination of second amplifier is the output of bipolarity gain adjustable amplifier.
Adjustable multiplying power temperature generator partially has the bipolarity gain adjustable amplifier, and multiplication factor and temperature have functional relation, and can realize the positive-negative polarity of multiplication factor size or output voltage size and the adjusting of amplitude size as required.
A kind of inclined to one side generator of adjustable Zero Temperature that contains warm partial function generator, an output is arranged, the inclined to one side generator of adjustable Zero Temperature is made up of warm partial function generator, potentiometer and resistance, the sliding end of the input termination potentiometer of temperature partial function generator, two stiff ends of potentiometer connect positive supply, negative supply or generating positive and negative voltage benchmark by resistance respectively, and the output termination of warm partial function generator is the output of the inclined to one side generator of adjustable Zero Temperature; Described temperature-sensitive element adopts thermistor usually, that is: warm partial function generator adopts proportional-type temperature partial function generator.
A kind of adjustable multiplying power temperature inclined to one side generator of adjustable Zero Temperature of generator partially that contains, an output is arranged, form partially by generator, resistance by adjustable multiplying power temperature for the inclined to one side generator of adjustable Zero Temperature, the adjustable multiplying power temperature input of generator partially connects positive supply, negative supply or generating positive and negative voltage benchmark by resistance respectively, and the adjustable multiplying power temperature output termination of generator partially is the output of the inclined to one side generator of adjustable Zero Temperature; Described temperature-sensitive element adopts diode or voltage-stabiliser tube usually, that is: warm partial function generator adopts voltage-type temperature partial function generator.
The inclined to one side generator of adjustable Zero Temperature has adjustable potentiometer or bipolarity gain adjustable amplifier, and output voltage and temperature have functional relation, adjustable ratio, and can be as required when normal temperature Adjustable Output Voltage be zero.
A kind of adjustable multiplying power temperature multiplying power temperature bias regulator of generator partially that contains has an input, an output; According to architectural difference directly-fed multiplying power temperature bias regulator, reaction type multiplying power temperature bias regulator, three kinds of forms of composite type multiplying power temperature bias regulator are arranged:
Directly-fed multiplying power temperature bias regulator is made up of inclined to one side generator of adjustable multiplying power temperature and multiplying power blending circuit, multiplying power blending circuit has two inputs, an output, the first input end of multiplying power blending circuit is connected with the input of the inclined to one side generator of adjustable multiplying power temperature and connects input into multiplying power temperature bias regulator, the adjustable multiplying power temperature of the second input termination of multiplying power blending circuit is the output of generator partially, and the output termination of multiplying power blending circuit is the output of multiplying power temperature bias regulator.
Reaction type multiplying power temperature bias regulator is made up of inclined to one side generator of adjustable multiplying power temperature and multiplying power blending circuit, multiplying power blending circuit has two inputs, an output, the first input end of multiplying power blending circuit connects the input into multiplying power temperature bias regulator, the adjustable multiplying power temperature of the second input termination of multiplying power blending circuit is the output of generator partially, and the output of multiplying power blending circuit is connected with the input of the inclined to one side generator of adjustable multiplying power temperature and connects output into multiplying power temperature bias regulator.
Composite type multiplying power temperature bias regulator is by weight combiner, adjustable multiplying power temperature is generator and multiplying power blending circuit composition partially, weight combiner has two inputs, an output, multiplying power blending circuit has two inputs, an output, the first input end of multiplying power blending circuit is connected with the weight combiner first input end and connects input into multiplying power temperature bias regulator, adjustable multiplying power temperature is the output of the input termination weight combiner of generator partially, the adjustable multiplying power temperature of the second input termination of multiplying power blending circuit is the output of generator partially, and the output that multiplying power is concocted circuit is connected with second input of weight combiner and connects output into multiplying power temperature bias regulator.
The temperature-sensitive element of multiplying power temperature bias regulator adopts thermistor usually, that is: the inclined to one side contained temperature partial function of the generator generator of the adjustable multiplying power temperature of multiplying power temperature bias regulator adopts proportional-type temperature partial function generator.
Described multiplying power blending circuit has two kinds of multi-form tracking type multiplying power blending circuit, two kinds of multi-form branch accent type multiplying power blending circuit according to the difference of structural principle.
The tracking type multiplying power blending circuit of first kind of form is made up of weighting combiner circuit and ratio correction circuit, the weighting combiner circuit has two inputs, an output, the ratio correction circuit has an input, an output, two inputs of weighting combiner circuit connect two inputs into multiplying power blending circuit respectively, the input of the output termination ratio correction circuit of weighting combiner circuit, the output termination of ratio correction circuit are the output of multiplying power blending circuit.
The tracking type multiplying power blending circuit of second kind of form is made up of ratio correction circuit and weighting combiner circuit, the input termination of ratio correction circuit is the first input end of multiplying power blending circuit, the first input end of the output termination weighting combiner circuit of ratio correction circuit, the second input termination of weighting combiner circuit is second input of multiplying power blending circuit, and the output termination of weighting combiner circuit is the output of multiplying power blending circuit.
Described ratio correction circuit is made up of amplifier, potentiometer and a plurality of resistance, the in-phase input end of amplifier passes through grounding through resistance, the inverting input of amplifier connects the sliding end of potentiometer, two stiff end one ends of potentiometer connect the ratio correction circuit by resistance input, the other end connects the output of amplifier by resistance, and the output termination of amplifier is the output of ratio correction circuit;
Described weighting combiner circuit adopts the amplifier adder circuit of the single output of dual input.
The branch accent type multiplying power blending circuit of first kind of form is by two amplifiers, two diodes, two potentiometers and a plurality of resistance are formed, the in-phase input end of first amplifier passes through grounding through resistance, the inverting input of first amplifier connects two inputs of multiplying power blending circuit respectively by two resistance, and connect a stiff end of two potentiometers respectively by two resistance, the sliding end of two potentiometers connects the output of first amplifier by two diodes, the side pole that two diodes link to each other is opposite, the in-phase input end of second amplifier passes through grounding through resistance, the inverting input of second amplifier connects another stiff end of two potentiometers respectively by two resistance, and connecing the output of second amplifier by resistance, the output termination of second amplifier is the output of multiplying power blending circuit.
The branch accent type multiplying power blending circuit of second kind of form is by two amplifiers, two diodes, two potentiometers and a plurality of resistance are formed, the in-phase input end of first amplifier passes through grounding through resistance, the inverting input of first amplifier connects the first input end of multiplying power blending circuit by resistance, and connect a stiff end of two potentiometers respectively by two resistance, the sliding end of two potentiometers connects the output of first amplifier by two diodes, the side pole that two diodes link to each other is opposite, the in-phase input end of second amplifier passes through grounding through resistance, the inverting input of second amplifier connects another stiff end of two potentiometers respectively by two resistance, connect second input of multiplying power blending circuit by resistance, and connecing the output of second amplifier by resistance, the output termination of second amplifier is the output of multiplying power blending circuit.
Described weight combiner is made up of potentiometer and voltage follower, voltage follower by amplifier by its inverting input and output short circuit are obtained, two stiff ends of potentiometer are respectively as two inputs of weight combiner, the input of the slip termination voltage follower of potentiometer, the output termination of voltage follower is the output of weight combiner.
Multiplying power temperature bias regulator comprises multiplying power blending circuit and adjustable multiplying power temperature generator partially, and its multiplication factor is the function of temperature, and multiplication factor can be adjusted to 1 as required when normal temperature.
A kind of Zero Temperature bias regulator that contains the inclined to one side generator of adjustable Zero Temperature has an input, an output; The Zero Temperature bias regulator is made up of inclined to one side generator of adjustable Zero Temperature and zero-bit blending circuit, zero-bit blending circuit has two inputs, an output, the first input end of zero-bit blending circuit connects the input into the Zero Temperature bias regulator, the output of the inclined to one side generator of the second input adjustable Zero Temperature of termination of zero-bit blending circuit, the output termination of zero-bit blending circuit is the output of Zero Temperature bias regulator.
Described zero-bit blending circuit is made up of offset correction circuit and weighting combiner circuit, the offset correction circuit has an input, an output, the weighting combiner circuit has two inputs, an output, the input termination of offset correction circuit is the first input end of zero-bit blending circuit, the first input end of the output termination weighting combiner circuit of offset correction circuit, the second input termination of weighting combiner circuit is second input of zero-bit blending circuit, and the output termination of weighting combiner circuit is the output of zero-bit blending circuit.
Described offset correction circuit is made up of amplifier, potentiometer and a plurality of resistance, the in-phase input end of amplifier passes through grounding through resistance, the inverting input of amplifier by resistance connect the offset correction circuit input, connect the sliding end of potentiometer and connect the output of amplifier by resistance by resistance, two stiff ends of potentiometer connect positive supply, negative supply or generating positive and negative voltage benchmark respectively, and the output termination of amplifier is the output of offset correction circuit;
Described weighting combiner circuit adopts the amplifier adder circuit of the single output of dual input.
The Zero Temperature bias regulator comprises zero-bit blending circuit and the inclined to one side generator of adjustable Zero Temperature, and its output voltage and input voltage difference are the function of temperature, and a definite value can be set to zero or be adjusted to output voltage and input voltage difference during normal temperature.
A kind of common temperature compensator that contains Zero Temperature bias regulator and multiplying power temperature bias regulator, an input, an output are arranged, the common temperature compensator is made up of Zero Temperature bias regulator and multiplying power temperature bias regulator, the input of Zero Temperature bias regulator is the input of common temperature compensator, the input of the output termination multiplying power temperature bias regulator of Zero Temperature bias regulator, the output of multiplying power temperature bias regulator is the output of common temperature compensator.
The common temperature compensator has zero-bit adjustment and temperature-compensating and multiplying power adjustment and the temperature-compensating that independently splits, and easy to adjust, versatility is good.
The common temperature compensator is realized various temperature compensation characteristic by the device of different sensitive characteristics with cooperating of different disposal circuit, adjusting by bipolarity gain adjustable amplifier and potentiometer realizes the positive-negative polarity of compensation magnitude ratio and the adjusting of size, satisfies the needs of multiple telemetry circuit or device correction.
A kind of high resistance type common temperature compensator that contains the common temperature compensator, an input, an output are arranged, high resistance type common temperature compensator is made up of voltage follower and common temperature compensator, the input of voltage follower is the input of high resistance type common temperature compensator, the output of voltage follower is connected the input with temperature compensator, and the output of common temperature compensator is high resistance type common temperature compensator output.
Voltage follower has high input impedance, is prepended to the common temperature compensator, makes high resistance type common temperature compensator have high input impedance, has improved common temperature compensator applicability.
The present invention's temperature partial function generator and zero-bit and multiplying power temperature bias regulator and common temperature compensator adopt compositions such as resistance, thermistor and semiconductor device, has simple in structure, parameter tuning convenience, highly versatile, characteristics such as with low cost have higher utility in fields such as control automatically and measurements.
Description of drawings
The input and output voltage relationship change schematic diagram that Fig. 1 a, 1b variations in temperature cause.
Fig. 2 a, 2b, 2c directly-fed, reaction type, three kinds of proportional-type temperature of composite type partial function generator circuit schematic diagram.
The temperature characteristics of Fig. 3 proportional-type temperature partial function generator.
Fig. 4 a, 4b, 4c directly-fed, reaction type, three kinds of voltage-type temperature of composite type partial function generator circuit schematic diagram.
The temperature characteristics of Fig. 5 voltage-type temperature partial function generator.
Multiplying power temperature that Fig. 6 is adjustable is the theory diagram of generator partially.
Multiplying power temperature that Fig. 7 is adjustable is the generator regulating characteristic curve partially.
Fig. 8 a, 8b, 8c voltage-type, reduced form, current mode bipolarity gain adjustable amplifier schematic diagram.
Fig. 9 a, 9b, 9c multiplication type, tracking type, branch accent type bipolarity gain adjustable amplifier schematic diagram.
The inclined to one side generator theory diagram of adjustable Zero Temperature that Figure 10 a is made up of ratio temperature partial function generator;
The inclined to one side generator theory diagram of adjustable Zero Temperature that Figure 10 b is made up of the inclined to one side generator of adjustable multiplying power temperature.
Figure 11 a, 11b, 11c directly-fed, reaction type, composite type multiplying power temperature bias regulator theory diagram.
The circuit theory diagrams of the tracking type multiplying power blending circuit of Figure 12 a, two kinds of forms of 12b.
The circuit theory diagrams of the branch accent type multiplying power blending circuit of Figure 13 a, two kinds of forms of 13b.
Figure 14 a, 14b tracking type, branch accent type multiplying power blending circuit adjustment characteristic curve.
Figure 15 Zero Temperature bias regulator theory diagram.
The circuit theory diagrams of Figure 16 zero-bit blending circuit.
Figure 17 offset correction circuit characteristic curve.
Figure 18 common temperature compensator theory diagram.
Figure 19 high resistance type common temperature compensator theory diagram.
Figure 20 common temperature compensator input signal curve.
The signal curve of Figure 21 a after common temperature compensator offset correction;
Figure 21 b is through the temperature-compensating of common temperature compensator zero-bit, the revised signal curve of multiplying power;
The signal curve of Figure 21 c after common temperature compensator offset correction, zero-bit temperature-compensating;
The signal curve of Figure 21 d after the temperature-compensating of common temperature compensator zero-bit, multiplying power correction, multiplying power temperature-compensating.
Figure 22 high resistance type common temperature compensator circuit theory diagram.
Figure 23 a common temperature compensator circuit schematic diagram.
Figure 23 b high resistance type common temperature compensator circuit schematic diagram.
Embodiment
After now example of the present invention specifically being described in.
The proportional-type temperature partial function generator (shown in Fig. 2 a, Fig. 2 b, Fig. 2 c) of directly-fed, reaction type, three kinds of forms of composite type has an input ut, an output vt; Temperature partial function generator is made up of operational amplifier A 1, potentiometer Rp1, resistance R 10～R13, the in-phase input end of amplifier A1 connects the sliding end of potentiometer Rp1, two stiff end one ends of potentiometer Rp1 pass through resistance R 10 ground connection by input ut, the other end that resistance R 13 connects warm partial function generator, the inverting input of amplifier A1 by resistance R 12 connect warm partial function generator input ut, connect the output of amplifier A1 by resistance R 11, the output termination of amplifier A1 is the output vt of warm partial function generator.
The resistance R 12 of directly-fed proportional-type temperature partial function generator adopts thermistor, and the resistance R 11 of reaction type proportional-type temperature partial function generator adopts the resistance R 11 of thermistor, composite type proportional-type temperature partial function generator then to adopt the different thermistor of temperature characterisitic with R12.
The multiplication factor of proportional-type temperature partial function generator is the function of temperature, and proportional-type temperature partial function generator adopts the resistive device (comprising the heat-sensitive semiconductive device) and the warm partial function generator that obtains the different temperatures function characteristic cooperating of treatment circuit of different sensitive characteristics.
Proportional-type temperature partial function generator temperature characteristic curve as shown in Figure 3.
Embodiment 2
Directly-fed, reaction type, the voltage-type temperature partial function generator of three kinds of forms of composite type is (as Fig. 4 a, Fig. 4 b, shown in Fig. 4 c), an input ut is arranged, an output vt, adopt and the same version of proportional-type temperature partial function generator, and change corresponding thermistor into voltage stabilizing didoe, that is: directly-fed voltage-type temperature partial function generator changes voltage-stabiliser tube D12 into for the thermistor R12 with directly-fed proportional-type temperature partial function generator, feedback type electric die mould temperature partial function generator changes voltage-stabiliser tube D11 into for the thermistor R11 with reaction type proportional-type temperature partial function generator, and composite type voltage-type temperature partial function generator changes voltage-stabiliser tube D11 and D12 respectively into for thermistor R11 and the R12 with composite type proportional-type temperature partial function generator.
Because voltage stabilizing didoe reverse breakdown voltage or forward on-state voltage drop are comparatively responsive to variations in temperature, the output voltage of voltage-type temperature partial function generator is the function of temperature, potentiometer is regulated the positive shared ratio of negative signal in the output voltage, and voltage-type temperature partial function generator is exported the voltage that adjustable and temperature are functional relation.
Voltage-type temperature partial function generator adopts the semiconductor device (comprising the thermistor device) and the warm partial function generator that obtains the different temperatures function characteristic cooperating of treatment circuit of different sensitive characteristics.
The temperature characteristics of voltage-type temperature partial function generator as shown in Figure 5.
Embodiment 3
Adjustable multiplying power temperature is generator (as shown in Figure 6) partially, an input ud, an output vd are arranged, be made up of warm partial function generator and gain adjustable amplifier, gain adjustable amplifier has an input ua and an output va, and the size of its voltage amplification factor can be regulated as required; The input ut of temperature partial function generator meets the input ud into the inclined to one side generator of adjustable multiplying power temperature, the output vt of temperature partial function generator meets the input ua of gain adjustable amplifier, and the output va of gain adjustable amplifier meets the output vd into the inclined to one side generator of adjustable multiplying power temperature.
Gain adjustable amplifier adopts usually and changes the feedback resistance of anti-phase or in-phase proportion amplifying circuit or input resistance into potentiometer and obtain, or replaces in the ratio amplifying circuits two fixed resistances that link together to realize as two variable resistors in potentiometer.
The inclined to one side generator of adjustable multiplying power temperature is realized the adjusting of multiplication factor size by temperature funtion of warm partial function generator generation, by gain adjustable amplifier.The inclined to one side generator regulating characteristic curve of adjustable multiplying power temperature as shown in Figure 7.
The bipolarity gain adjustable amplifier, an input ua and an output va are arranged, voltage-type bipolarity gain adjustable amplifier, reduced form bipolarity gain adjustable amplifier, current mode bipolarity gain adjustable amplifier, multiplication type bipolarity gain adjustable amplifier, tracking type bipolarity gain adjustable amplifier are arranged, divide accent type bipolarity gain adjustable amplifier six kinds of forms according to the difference of structure function:
Voltage-type bipolarity gain adjustable amplifier (shown in Fig. 8 a) is by operational amplifier A 2, potentiometer Rp2, resistance R 20～R24 forms, the in-phase input end of amplifier A2 connects the sliding end of potentiometer Rp2 by resistance R 20, two input ua that stiff end one termination is the bipolarity gain adjustable amplifier of potentiometer Rp2, other end ground connection, the inverting input of amplifier A2 meets the input ua of bipolarity gain adjustable amplifier by the parallel circuits of resistance R 22 and R24, by resistance R 23 ground connection, connect the output of amplifier A2 by resistance R 21, the output termination of amplifier A2 is the output va of bipolarity gain adjustable amplifier, and the power supply of amplifier A2 adopts negative and positive dual power.Usually resistance R 21 equates that with the R22 resistance resistance R 23 equates that with the R24 resistance voltage gain positive negative bipolar of voltage-type bipolarity gain adjustable amplifier is adjustable.
Reduced form bipolarity gain adjustable amplifier (shown in Fig. 8 b) is by operational amplifier A 2, potentiometer Rp2, resistance R 21 is formed with R22 and R23, the in-phase input end of amplifier A2 connects the sliding end of potentiometer Rp2, two input ua that stiff end one termination is the bipolarity gain adjustable amplifier of potentiometer Rp2, other end ground connection, the inverting input of amplifier A2 meets the input ua of bipolarity gain adjustable amplifier by resistance R 22, by resistance R 23 ground connection, connect the output of amplifier A2 by resistance R 21, the output termination of amplifier A2 is the output va of bipolarity gain adjustable amplifier, and the power supply of amplifier A2 adopts negative and positive dual power.Usually the resistance of resistance R 22 equates that with the resistance in parallel of resistance R 21 and R23 the voltage gain positive negative bipolar of reduced form bipolarity gain adjustable amplifier is adjustable.
Current mode bipolarity gain adjustable amplifier (shown in Fig. 8 c) is by operational amplifier A 2, potentiometer Rp2, resistance R 20～R25 forms, the in-phase input end of amplifier A2 meets the input ua of bipolarity gain adjustable amplifier by resistance R 25, by resistance R 20 ground connection, the inverting input of amplifier A2 connects the sliding end of potentiometer Rp2, meet the input ua of bipolarity gain adjustable amplifier by resistance R 22, and connect the output of amplifier A2 by resistance R 21, two stiff end one ends of potentiometer Rp2 meet the input ua of bipolarity gain adjustable amplifier by resistance R 24, the other end is by resistance R 23 ground connection, the output termination of amplifier A2 is the output va of bipolarity gain adjustable amplifier, and the power supply of amplifier A2 adopts negative and positive dual power.Usually resistance R 20 equates that with the R25 resistance resistance R 21 equates that with the R22 resistance resistance R 23 equates that with the R24 resistance voltage gain positive negative bipolar of current mode bipolarity gain adjustable amplifier is adjustable.
Multiplication type bipolarity gain adjustable amplifier (shown in Fig. 9 a) is made up of with R22 analog multiplier M2, potentiometer Rp2, resistance R 21, analog multiplier M2 has two inputs, an output, the first input end of analog multiplier M2 meets the input ua into the bipolarity gain adjustable amplifier, the sliding end of the second input termination potentiometer Rp2 of analog multiplier M2, two stiff ends of potentiometer Rp2 meet power supply+Vp and-Vp by resistance R 22 and R21 respectively, and the output termination of analog multiplier M2 is the output va of bipolarity gain adjustable amplifier.
Tracking type bipolarity gain adjustable amplifier (shown in Fig. 9 b) has an input ua and an output va, tracking type bipolarity gain adjustable amplifier is by operational amplifier A 1 and A2, resistance R 10 and R11 and R12, potentiometer Rp1, resistance R 20, R21 and R22 and R23 form, the in-phase input end of amplifier A1 is by resistance R 10 ground connection, the inverting input of amplifier A1 meets the input ua of bipolarity gain adjustable amplifier by resistance R 12, connect the stiff end of potentiometer Rp1 by resistance R 11, the output of the slip termination amplifier A1 of potentiometer Rp1, the in-phase input end of amplifier A2 is by resistance R 20 ground connection, the inverting input of amplifier A2 connects another stiff end of potentiometer Rp1 by resistance R 22, meet the input ua of bipolarity gain adjustable amplifier by resistance R 23, connect the output of amplifier A2 by resistance R 21, the output termination of amplifier A2 is the output va of bipolarity gain adjustable amplifier.
Divide accent type bipolarity gain adjustable amplifier (shown in Fig. 9 c) by operational amplifier A 21 and A22, diode D21a and D21b, resistance R 210 and R211a, R211b and R212, potentiometer Rp2a and Rp2b, resistance R 220, R221 and R222a, R222b and R223 form, the in-phase input end of amplifier A21 is by resistance R 210 ground connection, the inverting input of amplifier A21 meets the input ua of bipolarity gain adjustable amplifier by resistance R 212, connect the stiff end of potentiometer Rp2a and Rp2b respectively by resistance R 211a and R211b, the sliding end of potentiometer Rp2a and Rp2b connects the output of amplifier A21 respectively by diode D21a and D21b, diode D21a is opposite with the side pole that D21b links to each other, the in-phase input end of amplifier A22 is by resistance R 220 ground connection, the inverting input of amplifier A22 connects another stiff end of potentiometer Rp2a and Rp2b respectively by resistance R 222a and R222b, meet the input ua of bipolarity gain adjustable amplifier by resistance R 223, connect the output of amplifier A22 by resistance R 221, the output termination of amplifier A22 is the output va of bipolarity gain adjustable amplifier.
The inclined to one side generator of adjustable Zero Temperature has an output vb, by the difference of structural principle two kinds of forms is arranged.
First kind of form: the inclined to one side generator of adjustable Zero Temperature (shown in Figure 10 a) is made up of with R02 proportional-type temperature partial function generator, potentiometer Rp0, resistance R 01, the input ut of ratio temperature partial function generator connects the sliding end of potentiometer Rp0, two stiff ends of potentiometer Rp0 meet power supply-Vp, meet power supply+Vp by resistance R 02 by resistance R 01 respectively, and the output vt of ratio temperature partial function generator meets the output vb into the inclined to one side generator of adjustable Zero Temperature.
Second kind of form: form with R02 partially by generator, resistance R 01 by adjustable multiplying power temperature for the inclined to one side generator of adjustable Zero Temperature (shown in Figure 10 b), the adjustable multiplying power temperature input ud of generator partially meets power supply-Vp, meets power supply+Vp by resistance R 02 by resistance R 01 respectively, and the output vd of the inclined to one side generator of adjustable multiplying power temperature meets the output vb into the inclined to one side generator of adjustable Zero Temperature.
Embodiment 6
Multiplying power temperature bias regulator has an input uy, an output vy, according to the difference of structure directly-fed multiplying power temperature bias regulator, reaction type multiplying power temperature bias regulator, three kinds of forms of composite type multiplying power temperature bias regulator is arranged:
Directly-fed multiplying power temperature bias regulator (shown in Figure 11 a), an input uy is arranged, an output vy, directly-fed multiplying power temperature bias regulator is made up of multiplying power blending circuit and the inclined to one side generator of adjustable multiplying power temperature, multiplying power blending circuit has two input ue1 and ue2, an output ve, the first input end ue1 of multiplying power blending circuit is connected with the input ud of the inclined to one side generator of adjustable multiplying power temperature and meets input uy into multiplying power temperature bias regulator, the second input ue2 of multiplying power blending circuit meets the adjustable multiplying power temperature output vd of generator partially, and the output ve of multiplying power blending circuit meets the output vy into multiplying power temperature bias regulator.
Reaction type multiplying power temperature bias regulator (shown in Figure 11 b), an input uy is arranged, an output vy, reaction type multiplying power temperature bias regulator is made up of inclined to one side generator of adjustable multiplying power temperature and multiplying power blending circuit, multiplying power blending circuit has two input ue1 and ue2, an output ve, the first input end ue1 of multiplying power blending circuit meets the input uy into multiplying power temperature bias regulator, the second input ue2 of multiplying power blending circuit meets the adjustable multiplying power temperature output vd of generator partially, and the output ve of multiplying power blending circuit is connected with the input ud of the inclined to one side generator of adjustable multiplying power temperature and meets output vy into multiplying power temperature bias regulator.
Composite type multiplying power temperature bias regulator (shown in Figure 11 c), an input uy is arranged, an output vy, composite type multiplying power temperature bias regulator is by weight combiner, adjustable multiplying power temperature is generator and multiplying power blending circuit composition partially, weight combiner has two input uq1 and uq2, an output vq, multiplying power blending circuit has two input ue1 and ue2, an output ve, the first input end ue1 of multiplying power blending circuit is connected with weight combiner first input end uq1 and meets input uy into multiplying power temperature bias regulator, the input ud of the inclined to one side generator of adjustable multiplying power temperature meets the output vq of weight combiner, the second input ue2 of multiplying power blending circuit meets the adjustable multiplying power temperature output vd of generator partially, and multiplying power is concocted the second input uq2 of the output ve of circuit and weight combiner and met output vy into multiplying power temperature bias regulator.
Described weight combiner (shown in Figure 11 c), two input uq1 and uq2, an output vq are arranged, weight combiner is made up of potentiometer Rp9 and voltage follower, voltage follower by amplifier by its inverting input and output short circuit are obtained, two stiff ends of potentiometer Rp9 are respectively as two the input uq1 and the uq2 of weight combiner, the input of the slip termination voltage follower of potentiometer Rp9, the output termination of voltage follower is the output vq of weight combiner.
Multiplying power blending circuit has two kinds of tracking type multiplying power blending circuit, four kinds of forms of two kinds of branch accent type multiplying power blending circuit:
The tracking type multiplying power blending circuit (shown in Figure 12 a) of first kind of form is made up of weighting combiner circuit and ratio correction circuit, the weighting combiner circuit has two input uh1 and uh2, an output vh, the ratio correction circuit has an input un, an output vn, two input uh1 of weighting combiner circuit and uh2 connect respectively and are two input ue1 of multiplying power blending circuit and ue2, the output vh of weighting combiner circuit meets the input un of ratio correction circuit, and the output vn of ratio correction circuit meets the output ve into multiplying power blending circuit; The weighting combiner circuit is made up of operational amplifier A 5, resistance R 50～R53, the in-phase input end of amplifier A5 is by resistance R 50 ground connection, the inverting input of amplifier A5 by resistance R 52 connect the weighting combiner circuit input uh1, by resistance R 53 connect the weighting combiner circuit input uh2, connect the output of amplifier A5 by resistance R 51, the output termination of amplifier A5 is the output vh of weighting combiner circuit; The ratio correction circuit is made up of amplifier A6, resistance R 60～R62, potentiometer Rp6, the in-phase input end of amplifier A6 is by resistance R 60 ground connection, the inverting input of amplifier A6 connects the sliding end of potentiometer Rp6, two stiff end one ends of potentiometer Rp6 connect the ratio correction circuit by resistance R 62 input un, the other end connects the output of amplifier A6 by resistance R 61, and the output termination of amplifier A6 is the output vn of ratio correction circuit.
The tracking type multiplying power blending circuit (shown in Figure 12 b) of second kind of form is made up of ratio correction circuit and weighting combiner circuit, the input un of ratio correction circuit meets the first input end ue1 into multiplying power blending circuit, the output vn of ratio correction circuit meets the first input end uh1 of weighting combiner circuit, the second input uh2 of weighting combiner circuit meets the second input ue2 into multiplying power blending circuit, and the output vh of weighting combiner circuit meets the output ve into multiplying power blending circuit; The ratio correction circuit is made up of amplifier A5, resistance R 50～R52, potentiometer Rp5, the in-phase input end of amplifier A5 is by resistance R 50 ground connection, the inverting input of amplifier A5 connects the sliding end of potentiometer Rp5, two stiff end one ends of potentiometer Rp5 connect the ratio correction circuit by resistance R 52 input un, the other end connects the output of amplifier A5 by resistance R 51, and the output termination of amplifier A5 is the output vn of ratio correction circuit; The weighting combiner circuit is made up of operational amplifier A 6, resistance R 60～R63, the in-phase input end of amplifier A6 is by resistance R 60 ground connection, the inverting input of amplifier A6 by resistance R 62 connect the weighting combiner circuit input uh1, by resistance R 63 connect the weighting combiner circuit input uh2, connect the output of amplifier A6 by resistance R 61, the output termination of amplifier A6 is the output vh of weighting combiner circuit.
The ratio correction circuit adopts potentiometer to regulate the size of amplifying circuit multiplication factor, to be implemented in the required requirement that reaches of multiplying power size under the normal temperature.
Tracking type multiplying power blending circuit adjustment characteristic curve is shown in Figure 14 a.
The branch accent type multiplying power blending circuit (shown in Figure 13 a) of first kind of form is by operational amplifier A 5 and A6, diode D5a and D5b, resistance R 50, R51a, R51b, R52, R53 and R60, R61, R62a, R62b, potentiometer Rp5a and Rp5b form, the in-phase input end of amplifier A5 is by resistance R 50 ground connection, the inverting input of amplifier A5 meets two the input ue1 and the ue2 of multiplying power blending circuit respectively by two resistance R 52 and R53, and connect the stiff end of potentiometer Rp5a and Rp5b respectively by resistance R 51a and R51b, the sliding end of potentiometer Rp5a and Rp5b connects the output of amplifier A5 respectively by diode D5a and D5b, diode D5a is opposite with the side pole that D5b links to each other, the in-phase input end of amplifier A6 is by resistance R 60 ground connection, the inverting input of amplifier A6 connects another stiff end of potentiometer Rp5a and Rp5b respectively by resistance R 62a and R62b, connect the output of amplifier A6 by resistance R 61, the output termination of amplifier A6 is the output ve of multiplying power blending circuit.
The branch accent type multiplying power blending circuit (shown in Figure 13 b) of second kind of form is by operational amplifier A 5 and A6, diode D5a and D5b, resistance R 50, R51a, R51b, R52 and R60, R61, R62a, R62b, R63, potentiometer Rp5a and Rp5b form, the in-phase input end of amplifier A5 is by resistance R 50 ground connection, the inverting input of amplifier A5 meets the first input end ue1 of multiplying power blending circuit by resistance R 52, and connect the stiff end of potentiometer Rp5a and Rp5b respectively by resistance R 51a and R51b, the sliding end of potentiometer Rp5a and Rp5b connects the output of amplifier A5 respectively by diode D5a and D5b, diode D5a is opposite with the side pole that D5b links to each other, the in-phase input end of amplifier A6 is by resistance R 60 ground connection, the inverting input of amplifier A6 connects another stiff end of potentiometer Rp5a and Rp5b respectively by resistance R 62a and R62b, meet the second input ue2 of multiplying power blending circuit by resistance R 63, connect the output of amplifier A6 by resistance R 61, the output termination of amplifier A6 is the output ve of multiplying power blending circuit.
The multiplication factor of dividing the positive negative signal of accent type multiplying power blending circuit is by the positive and negative separation of diode, by the positive and negative independent regulation of current potential, make unequal positive negative signal multiplying power be implemented in the requirement that normal temperature is issued to positive negative signal multiplying power unanimity, divide accent type multiplying power blending circuit adjustment characteristic curve shown in Figure 14 b.
Zero Temperature bias regulator (as shown in figure 15), an input ux, an output vx are arranged, the Zero Temperature bias regulator is made up of zero-bit blending circuit and the inclined to one side generator of adjustable Zero Temperature, zero-bit blending circuit has two input uc1 and uc2, an output vc, the first input end uc1 of zero-bit blending circuit meets the input ux into the Zero Temperature bias regulator, the second input uc2 of zero-bit blending circuit meets the output vb of the inclined to one side generator of adjustable Zero Temperature, and the output vc of zero-bit blending circuit meets the output vx into the Zero Temperature bias regulator.
Zero-bit blending circuit (as shown in figure 16) is made up of offset correction circuit and weighting combiner circuit, the offset correction circuit has an input um, an output vm, the weighting combiner circuit has two input uh1 and uh2, an output vh, the input um of offset correction circuit meets the first input end uc1 into zero-bit blending circuit, the output vm of offset correction circuit meets the first input end uh1 of weighting combiner circuit, the second input uh2 of weighting combiner circuit meets the second input uc2 into zero-bit blending circuit, and the output vh of weighting combiner circuit meets the output vc into zero-bit blending circuit.
The offset correction circuit is made up of amplifier A3, potentiometer Rp3, resistance R 30～R33, the in-phase input end of amplifier A3 is by resistance R 30 ground connection, the inverting input of amplifier A3 by resistance R 32 connect the offset correction circuit input um, connect the sliding end of potentiometer Rp3, connect the output of amplifier A3 by resistance R 31 by resistance R 33, two stiff ends of potentiometer Rp3 meet power supply+Vp and-Vp respectively, and the output termination of amplifier A3 is the output vm of offset correction circuit.
The weighting combiner circuit is made up of operational amplifier A 4, resistance R 40～R43, the in-phase input end of amplifier A4 is by resistance R 40 ground connection, the inverting input of amplifier A4 by resistance R 42 connect the weighting combiner circuit input uh1, by resistance R 43 connect the weighting combiner circuit input uh2, connect the output of amplifier A4 by resistance R 41, the output termination of amplifier A4 is the output vh of weighting combiner circuit.
The offset correction circuit adopts potentiometer to produce the voltage that a size can positive and negative adjusting, and with processed signal voltage stack, to realize the adjustment of zero drift under the normal temperature, offset correction circuit characteristic curve as shown in figure 17.
Embodiment 8
Common temperature compensator (as shown in figure 18) has an input uw, an output vw, the common temperature compensator is made up of Zero Temperature bias regulator and multiplying power temperature bias regulator, the input ux of Zero Temperature bias regulator is the input uw of common temperature compensator, the output vx of Zero Temperature bias regulator meets the input uy of multiplying power temperature bias regulator, and the output vy of multiplying power temperature bias regulator is the output vw of common temperature compensator.
High resistance type common temperature compensator (as shown in figure 19) has an input, an output, high resistance type common temperature compensator is made up of voltage follower G0 and common temperature compensator, the input of voltage follower G0 is the input of high resistance type common temperature compensator, the output of voltage follower G0 is connected the input uw with temperature compensator, and the output vw of common temperature compensator is high resistance type common temperature compensator output.
Voltage follower can adopt realizes that with the inverting input of operational amplifier and output short circuit the in-phase input end of amplifier is the input of voltage follower, and the output of amplifier is the output of voltage follower.
Common temperature compensator input signal curve as shown in figure 20, wherein the corresponding curve of normal temperature (be generally Celsius 25 degree) has departed from initial point, the zero-bit of curve and slope all change during variations in temperature.When normal temperature regulator potentiometer Rp1 to make the output voltage of the inclined to one side generator of adjustable Zero Temperature be zero, regulate Rp7 make adjustable multiplying power temperature partially the multiplication factor of generator be zero; Regulator potentiometer Rp3 revises corresponding curve offset simultaneously, signal curve after common temperature compensator offset correction is shown in Figure 21 a, regulator potentiometer Rp5 or Rp6 (or Rp5a, Rp5b) make corresponding slope of a curve reach requirement, shown in the signal curve Figure 21 b after the multiplying power levelling; During variations in temperature, regulator potentiometer Rp0 or Rp2 make corresponding curve negotiating basic point, signal curve after the zero-bit temperature-compensating is shown in Figure 21 c, value when regulator potentiometer Rp8 makes the slope of response curve revert to normal temperature, the signal curve after the temperature-compensating of common temperature compensator zero-bit, multiplying power correction, multiplying power temperature-compensating is shown in Figure 21 d.
In the common temperature compensator power supply+Pv of amplifier with-Pv is common negative and positive dual power, and signal criterion power supply+Vp with-Vp is higher negative and positive dual power of precision or generating positive and negative voltage benchmark, these two groups of power supplys also can be merged into one group of negative and positive dual power during simple application.
Voltage follower is prepended to the common temperature compensator, makes high resistance type common temperature compensator have high input impedance, has expanded common temperature compensator applicable situation.
High resistance type common temperature compensator circuit theory diagram as shown in figure 22.
Common temperature compensator, high resistance type common temperature compensator circuit schematic diagram are shown in Figure 23 a, Figure 23 b.
Claims (9)
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| CN201010199708A CN101860349A (en) | 2010-06-04 | 2010-06-04 | Temperature deviation function generator, zero position and magnification temperature deviation adjuster and general temperature compensator |
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| CN201010199708A CN101860349A (en) | 2010-06-04 | 2010-06-04 | Temperature deviation function generator, zero position and magnification temperature deviation adjuster and general temperature compensator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332536A (en) * | 2017-07-03 | 2017-11-07 | 重庆西南集成电路设计有限责任公司 | It is a kind of precisely to debug the temperature-compensation circuit and method of gain |
| CN110113005A (en) * | 2019-04-11 | 2019-08-09 | 深圳市金科泰通信设备有限公司 | 5G standard source high-frequency crystal oscillator circuit |
| CN110174125A (en) * | 2019-06-10 | 2019-08-27 | 武汉湖滨电器有限公司 | A kind of Sensor Temperature Compensation circuit |
| CN111880583A (en) * | 2019-04-15 | 2020-11-03 | 思达科技股份有限公司 | Method for determining and controlling junction temperature of device under test |
-
2010
- 2010-06-04 CN CN201010199708A patent/CN101860349A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332536A (en) * | 2017-07-03 | 2017-11-07 | 重庆西南集成电路设计有限责任公司 | It is a kind of precisely to debug the temperature-compensation circuit and method of gain |
| CN110113005A (en) * | 2019-04-11 | 2019-08-09 | 深圳市金科泰通信设备有限公司 | 5G standard source high-frequency crystal oscillator circuit |
| CN111880583A (en) * | 2019-04-15 | 2020-11-03 | 思达科技股份有限公司 | Method for determining and controlling junction temperature of device under test |
| CN111880583B (en) * | 2019-04-15 | 2021-08-20 | 思达科技股份有限公司 | Method for determining and controlling the temperature of the joint surface of the device under test |
| CN110174125A (en) * | 2019-06-10 | 2019-08-27 | 武汉湖滨电器有限公司 | A kind of Sensor Temperature Compensation circuit |
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