CN206517300U - A kind of constant current input power controls circuit - Google Patents
A kind of constant current input power controls circuit Download PDFInfo
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- CN206517300U CN206517300U CN201720118905.8U CN201720118905U CN206517300U CN 206517300 U CN206517300 U CN 206517300U CN 201720118905 U CN201720118905 U CN 201720118905U CN 206517300 U CN206517300 U CN 206517300U
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Abstract
The utility model is related to a kind of constant current input power control circuit, including：It is connected with external circuit, receives input signal, processing output filtering voltage is filtered to input signal and produce the input module of sampled signal；It is connected with input module, converts input voltage into adjustable alternating voltage and the voltage transformation module for exporting adjustable DC voltage is filtered to alternating voltage；It is connected with voltage transformation module, the output module that sampling produces the second sampled voltage is carried out to adjustable DC voltage；It is connected respectively with input module, voltage transformation module and output module, outputs control signals to voltage transformation module to adjust the control module of input current based on sampled signal, the second sampled voltage.The input current fast and stable of power supply can be made by implementing the utility model, not influenceed by environment temperature, wide input voltage range, the battery discharging of applicable a variety of different voltage class can meet electric power and communications industry application demand, applicability is wide, practical.
Description
Technical field
The utility model is related to the technical field of power supply, and circuit is controlled more specifically to a kind of constant current input power.
Background technology
Battery needs periodically to carry out charge and discharge maintenance, to improve service life.Maintenance free cell in the market
Discharge equipment is usually PTC resistor (positive temperature coefficient resistor) pattern, and the control mode of this pattern is as follows：According to battery discharge
The size of electric current adjusts the radiating fan rotation speed of PTC resistor, and then realizes the substantially constant of discharge current.I.e. when discharge current is big
When setting value, rotation speed of the fan, the rise of PTC resistor temperature, resistance increase, discharge current reduction are reduced；When discharge current is less than
During setting value, rotation speed of the fan is improved, PTC resistor temperature reduction, resistance reduces, discharge current increase；Pass through above-mentioned tune repeatedly
Section process so that battery discharge current is basically stable at setting value.
Above-mentioned storage battery constant-current discharge device structure is simple, easily realizes.But there is the following lack in such a discharge equipment
Point：Firstth, the adjustment of battery discharge current is adjusted according to PTC resistor temperature, is regulated the speed slow；Secondth, by environment temperature
Influence is larger, when environment temperature, which exists, to be changed, and battery discharge current needs continuous adjustment；3rd, the storage of different voltage class
Battery needs to set different PTC resistors.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided a kind of constant current is defeated
Enter power control circuit.
The utility model solves the technical scheme that its technical problem used：Construct a kind of constant current input power control electricity
Road, including：
It is connected with external circuit, receives input signal, processing output filtering voltage is filtered to the input signal simultaneously
Produce the input module of sampled signal；
It is connected with the input module, the input voltage is converted into adjustable alternating voltage and to the alternation
Voltage is filtered the voltage transformation module for exporting adjustable DC voltage；
It is connected with the voltage transformation module, carrying out sampling to the adjustable DC voltage produces the second sampled voltage
Output module；
It is connected respectively with the input module, the voltage transformation module and the output module, based on the sampling
Signal, second sampled voltage output control signals to the voltage transformation module to adjust the control module of input current.
In constant current input power described in the utility model control circuit, it is preferable that the input module includes：
The input interface being connected with external circuit；
Be connected with the input interface, to the power initiation when soft start electricity that is limited of the dash current that produces
Road；
It is connected with the soft starting circuit, the first filtering that processing produces filtering voltage is filtered to the input signal
Circuit；
It is connected between the input interface and the soft starting circuit, voltage sample generation is carried out to the input signal
The input voltage sample circuit of first sampled voltage；
It is connected between the input interface and the soft starting circuit, current sample generation is carried out to the input signal
The input current sample circuit of sample rate current.
In constant current input power described in the utility model control circuit, it is preferable that the voltage transformation module includes：
It is connected with first filter circuit, the direct current that the filtering voltage is converted into adjustable alternating voltage is changed
Circuit；
It is connected with the DC converting circuit, processing output is filtered to the adjustable alternating voltage adjustable
Second filter circuit of DC voltage；
It is connected respectively with the control module, the DC converting circuit, the control exported according to the control module is believed
The drive circuit of number control DC converting circuit.
In constant current input power described in the utility model control circuit, it is preferable that the output module includes and institute
The output voltage stated the load of the second filter circuit connection and be connected between second filter circuit and the load is adopted
Sample circuit；The output voltage sampling circuit carries out sampling to the adjustable DC voltage and produces the second sampled voltage.
In constant current input power described in the utility model control circuit, it is preferable that the load is permanent ohmic load,
The permanent resistance is power resistor.
In constant current input power described in the utility model control circuit, it is preferable that the control module includes difference
Sampled with the input voltage sample circuit, the input current sample circuit, the drive circuit and the output voltage
Circuit is connected, and the control signal is exported to the control of the drive circuit based on the sampled signal, second sampled voltage
Circuit processed.
Constant current input power described in the utility model control circuit in, it is preferable that the control module also include with
The control circuit connection, the communicating circuit carried out data transmission for the power supply and external monitor.
Implement constant current input power control circuit of the present utility model, have the advantages that：Perseverance of the present utility model
Stream input power control circuit includes：It is connected with external circuit, receives input signal, processing output is filtered to input signal
Filtering voltage and the input module for producing sampled signal；It is connected with input module, converts input voltage into adjustable alternation
Voltage is simultaneously filtered the voltage transformation module for exporting adjustable DC voltage to alternating voltage；Connect with voltage transformation module
Connect, the output module that sampling produces the second sampled voltage is carried out to adjustable DC voltage；Turn respectively with input module, voltage
Change the mold block and output module connection, based on sampled signal, the second sampled voltage output control signals to voltage transformation module with
Adjust the control module of input current.The input current fast and stable of power supply can be made by implementing the utility model, not by environment temperature
Influence, wide input voltage range, the battery discharging of applicable a variety of different voltage class can meet electric power and communications industry
Application demand, applicability is wide, practical.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the theory diagram that the utility model constant current input power controls circuit；
Fig. 2 is the logic chart that the utility model constant current input power controls circuit current constant control；
Fig. 3 is the circuit theory diagrams that the utility model constant current input power controls circuit.
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate embodiment of the present utility model.
As shown in figure 1, controlling the theory diagram of circuit for the utility model constant current input power.Constant current of the present utility model
Input power control circuit includes：It is connected with external circuit, receives input signal, processing output filter is filtered to input signal
Wave voltage and the input module 10 for producing sampled signal；It is connected with input module 10, converts input voltage into adjustable friendship
Time variant voltage is simultaneously filtered the voltage transformation module 20 for exporting adjustable DC voltage to alternating voltage；With voltage conversion mould
Block 20 is connected, and the output module 30 that sampling produces the second sampled voltage is carried out to adjustable DC voltage；Respectively with input mould
Block 10, voltage transformation module 20 and output module 30 are connected, based on sampled signal, the second sampled voltage output control signal
To voltage transformation module 20 to adjust the control module 40 of input current.
Specifically, in the present embodiment：
Input module 10 includes：Input interface 101, soft starting circuit 102, the first filter circuit 103, input voltage sampling
Circuit 104 and input current sample circuit 105.
Input interface 101, is power supply and extraneous interface, in physical circuit, and input interface 101 connects with external circuit
Connect.It is to be appreciated that in actual applications, input interface 101 can be set to be connected with external circuit as needed
Interface, and then power supply and the risk of extraneous connection error can be avoided to occur.
Soft starting circuit 102, is connected with input interface 101, in power initiation, to the impact electricity produced by power source internal
Stream is limited, and to prevent power supply from damaging the related device of power source internal because of the generation of dash current in start-up course, is carried
The high security performance of power supply.In the present embodiment, soft starting circuit 102 is preferably that current-limiting resistance is constituted with relay assembly.
First filter circuit 103, is connected with soft starting circuit 102, and input signal is filtered and handles and export filtering
Voltage.It is to be appreciated that the first filter circuit 103 mainly handles and then reduced input letter by being filtered to input signal
The ripple of input voltage and input current in number, makes input voltage and input current more stablize.Preferably, in the present embodiment
In, the first filter circuit 103 can select inductance and electrochemical capacitor is filtered to input signal.
Input voltage sample circuit 104, is connected between input interface 101 and soft starting circuit 102, in input signal
Input voltage carry out sampling produce the first sampled voltage.Preferably, in the present embodiment, input voltage sample circuit 104 can
The mode combined from resistance or resistance with differential operational amplifier is realized.
Input current sample circuit 105, is connected between input interface 101 and soft starting circuit 102, in input signal
Input current carry out sampling produce sample rate current.Preferably, in the present embodiment, input current sample circuit 105 can select
Precision resistance coordinates differential networks or current transformer to realize.
Voltage transformation module 20 includes DC converting circuit 201, the second filter circuit 202 and drive circuit 203.
DC converting circuit 201, is connected with the first filter circuit 103, will be filtered processing through the first filter circuit 103
Filtering voltage afterwards is converted to adjustable alternating voltage.Preferably, in the present embodiment, DC converting circuit 201 can be by opening
Close pipe and diode composition；Switching tube typically can be using MOSFET pipes (FET) or IGBT pipe (insulated gate bipolar crystal
Pipe).Diode can select fast recovery diode.
Second filter circuit 202, is connected with DC converting circuit 201, and what DC converting circuit 201 was exported is adjustable
Alternating voltage is filtered processing, and exports adjustable DC voltage.It is to be appreciated that by turning in load 301 with direct current
Changing between circuit 201 increases by the second filter circuit 202 voltage waveform in load 301 can be made more stable, while can also limit this
The rate of change of electric current in power loop, further increases the reliability of power supply.Preferably, in the present embodiment, second
Filter circuit 202 can select inductance and be realized with electrochemical capacitor.Inductance is mainly used in limiting the current changing rate of loop of power circuit, electrolysis
The effect of electric capacity is to make the voltage waveform in load more stable.
Drive circuit 203 is connected with control module 40, DC converting circuit 201 respectively, mainly according to control module 40
Switching tube on or off in the control signal control DC converting circuit 201 of output, control can be increased by drive circuit
The driving force for the control signal that module 40 is exported, so as to better control over the switching tube in DC converting circuit 201.It is excellent
Selection of land, in the present embodiment, drive circuit 203 can be realized using forms such as integrated driving IC or push-pull driver circuits.
In the present embodiment, voltage transformation module 20 controls constant current input power of the present utility model the input electricity of circuit
Pressure characteristic has a major impact, in other words, the wide scope input achieved by constant current input power control circuit of the present utility model
What voltage characteristic was mainly realized by voltage transformation module 20.For example, it is assumed that the input voltage in input signal is Uin, according to
The current value of design requirement constant current input is Iin, and the permanent resistance value of output is Rl, and the efficiency for controlling circuit is η, is exported in theory
Average voltage is , only need to be according to input electricity in the case that constant current input current value Iin is certain
Uin scope is pressed to set suitable Rl to control output voltage average value Uo in rational scope.
Output module 30 includes load 301 and output voltage sampling circuit 302.
Load 301 is connected with the second filter circuit 202, and load 301 is typically realized using resistance.Preferably, in this implementation
In example, in order to avoid the resistance value of load 301 is influenced by temperature, 301 resistance used are loaded for permanent resistance, usually work(
Rate resistance.Because resistance is constant resistance, it is not influenced by temperature and then ensure that constant current input power of the present utility model
Control circuit is not influenced by temperature.
Output voltage sampling circuit 302, is connected between the second filter circuit 202 and load 301, to the second filter circuit
The adjustable DC voltage of 202 outputs is sampled and produces the second sampled voltage, and output to control module 40 passes through control
In the reasonable scope whether module 40 detected to output voltage average value, judge it.Preferably, output voltage sampling circuit
302 can be realized using resistance.
Control module 40 includes control circuit 401 and communicating circuit 402.
Control circuit 401 respectively with input voltage sample circuit 104, input current sample circuit 105, drive circuit 203,
And output voltage sampling circuit 302 is connected, drive circuit is output control signals to based on sampled signal, the second sampled voltage
203.I.e. control circuit 401 is mainly the first sampled voltage exported according to input voltage sample circuit 104, input current and sampled
Second sampled voltage of sample rate current and the output voltage sampling circuit output that circuit 105 is exported is with controlling in circuit 401
Portion's respective value set in advance is compared, and exports corresponding control signal to drive circuit 203, driving according to comparative result
Circuit 203 is exported to DC converting circuit 201, to control the shut-off of the switching tube in DC converting circuit 201, and then is adjusted defeated
Enter electric current, make input current rapid constant in design load.Preferably, in the present embodiment, control circuit 401 can be using at DSP
Device or chip microcontroller are managed, by sampling DSP Processor or single-chip microcomputer carries out feedback control regulation and can make the input current of power supply
Can fast and stable.
Communicating circuit 402, circuit 401 is connected, power supply source and external monitor carry out data transmission with control.It is appreciated that
Ground, sets communicating circuit 402 power supply is carried out data transmission with external monitor, and then enter using external monitor to power supply
Row detection and control.Further enhance the monitoring and management to power supply.Preferably, in the present embodiment, communicating circuit 402 can be adopted
Realized with RS485 or CAN.
As shown in Fig. 2 controlling the logic chart of circuit current constant control for the utility model constant current input power.Work as input current
During more than setting value, sample rate current, the appropriate adjustment driving electricity for controlling circuit 401 to be exported according to input current sample circuit 105
The dutycycle of road output, and then change the working condition of DC converting circuit 201, reduce output voltage, by loading 301 institutes
The resistance used is constant, therefore, may be such that input current reduces, is finally reached the setting value of input current.When input electricity
When stream is less than setting value, sample rate current that control circuit 401 export according to input current sample circuit 105, appropriate adjustment drive
The dutycycle of circuit output, and then change the working condition of DC converting circuit 201, increase output voltage, due to load 301
Used resistance is constant, therefore, may be such that input current increases, is finally reached the setting value of input current.
As shown in figure 3, controlling the circuit theory diagrams of circuit for the utility model constant current input power.Specifically：
Input interface 101 include first interface V+ and second interface V-, first interface V+ and second interface V- respectively with outside
The corresponding interface connection of portion's circuit, makes power supply to be connected with the external world.
Soft starting circuit 102 includes current-limiting resistance R1 and relay K1, current-limiting resistance R1 first end and first interface V
+ connection, current-limiting resistance R1 the second end is connected with the first filter circuit 103, and relay K1 is in parallel with current-limiting resistance R1.It is preferred that
Ground, current-limiting resistance R1 carries out current limliting to input current.
First filter circuit 103 includes the of the first filter inductance L1 and the first filter capacitor C1, the first filter inductance L1
One end is connected with current-limiting resistance R1 the second end, and the first filter inductance L1 the second end and the first filter capacitor C1 first end connect
Connect, the node that the first filter inductance L1 the second end is connected with the first filter capacitor C1 first end is additionally coupled to voltage conversion mould
Block 20；First filter capacitor C1 the second end is connected to the first reference ground (and the first reference ground is connected with second interface V-).Can
So that with understanding, the first filter inductance L1 and the first filter capacitor C1 value are mainly determined by the ripple size of input current.It is excellent
Selection of land, the first filter inductance L1 core material selection powder core；First filter capacitor C1 selects electrochemical capacitor.
Input voltage sample circuit 104 includes resistance R4 and resistance R5.Resistance R4 first end is connected with first interface V+,
Resistance R4 the second end is connected with resistance R5 first end；Resistance R5 the second end is connected to the first reference ground；Resistance R4 and electricity
Node between resistance R5 is additionally coupled to control the first input end of circuit 401.It is to be appreciated that between resistance R4 and resistance R5
Node voltage is the first sampled voltage Vins.
Input current sample circuit 105 includes resistance RS, resistance R6, resistance R7, resistance R8, resistance R9 and calculus of differences
Amplifier.Resistance RS first end is connected with the first filter capacitor C1 the second end, and the of resistance RS the second end and resistance R6
One end is connected；Resistance R6 the second end is connected with resistance R7 first end and is connected to the homophase input of differential operational amplifier
End, resistance R7 the second end is connected to the first reference ground；Resistance R8 first end and the inverting input of differential operational amplifier
Connection, resistance R8 the second end is connected to the first reference ground；Resistance R9 be connected in parallel on the inverting input of differential operational amplifier with
Between output end；The output end of differential operational amplifier is with controlling the second input of circuit 401 to be connected.It is to be appreciated that electric
Resistance RS samples to input current, and carries out processing through differential operational amplifier and export sample rate current Iins to controlling circuit
401 the second input.Preferably, resistance RS is precision resistance.
DC converting circuit 201 includes switching tube Q1 and diode D1.Preferably, switching tube Q1 manages for MOSFET；Two poles
Pipe D1 is fast recovery diode.Switching tube Q1 source electrode is connected with resistance RS the second end, switching tube Q1 drain electrode and diode
D1 anode connection, switching tube Q1 grid is connected with drive circuit 203.
Second filter circuit 202 includes the second filter inductance L2 and the second filter capacitor C2.The of second filter inductance L2
One end is connected with switching tube Q1 drain electrode, and the second filter inductance L2 the second end is connected with the second filter capacitor C2 the second end,
Second filter capacitor C2 first end is connected with diode D1 negative electrode.Preferably, the second filter capacitor C2 is electrochemical capacitor.
Drive circuit 203 includes driving IC, drives IC input and controls the output end of circuit 401 to be connected, drives IC
Output end be connected with switching tube Q1 grid.
Load 301 includes load resistance RL, and load resistance RL first end is connected with the second filter capacitor C2 first end,
Load resistance RL the second end is connected with the second filter capacitor C2 the second end, and load resistance RL the second end is additionally coupled to second
Reference ground.Preferably, load resistance RL is the constant power resistor of resistance.By using the constant power resistor of resistance as negative
The resistance that load avoids load is influenced by temperature.
Output voltage sampling circuit 302 includes resistance R2 and resistance R3, resistance R2 first end and the second filter capacitor C2
First end connection, resistance R2 the second end is connected with resistance R3 first end, and resistance R3 the second end is connected to the second reference
Ground；The 3rd input of control circuit 401 is connected to after node isolation processing between resistance R2 and resistance R3.It is appreciated that
Ground, the node voltage between resistance R2 and resistance R3 is the second sampled voltage Vos.
Circuit 401 is controlled to use DSP Processor and corresponding peripheral components, or single-chip microcomputer and corresponding peripheral device
Part.The communication interface of control circuit 401 is connected with communicating circuit 402.
The principle for controlling constant current input power of the present utility model circuit below in conjunction with Fig. 3 is made further specifically
It is bright：
Assuming that controlled using constant current input power of the present utility model the input voltage range of the power supply of circuit for 40~
300VDC, covers the battery system of 3 kinds of common voltage grades of 48V, 110V and 220V, the discharge current of battery system
It is required that being 50A.Battery system is correctly connected with module input interface first, after module normal work, input current is first
Charged by current-limiting resistance R1, the first filter inductance L1 to the first filter capacitor C1, after delay, K1 will be closed.It is appreciated that
Ground, the first filter inductance L1 core material selection powder core, the first filter capacitor C1 selection 350V electrochemical capacitors, the first filtering
Inductance L1 and the first filter capacitor C1 value are mainly determined by the ripple size of input current.Then input current flows through switch
Pipe Q1, diode D1 and the second filter inductance L2, wherein the second filter capacitor C2, switching tube Q1 selection 600V are pressure-resistant
COOLMOSFET, main function is the conversion for realizing input voltage to output voltage.Diode D1 selections 600V recovers two poles soon
Pipe, main function is to the current stream in the second filter inductance L2；Second filter inductance L2 effect is limitation loop of power circuit
Current changing rate, contribute to switching tube Q1 safe operation；Second filter capacitor C2 effect is so that on load resistance RL
Voltage waveform it is more stable, be typically chosen electrochemical capacitor；Load resistance RL resistance is by minimum input voltage and maximum input electricity
Stream is determined.Resistance R4 and resistance R5 constitutes the sampling resistor network of input voltage, by the first sampled voltage Vins feeding control electricity
Road 401；Precision resistance RS and resistance R6, resistance R7, resistance R8, resistance R9 and operational amplifier are adopted to input current
Sample, and export sample rate current Iins feeding control circuits 401；Resistance R2 and resistance R3 composition output voltage sampling circuits 302, will
Second sampled voltage Vos passes through feeding control circuit 401 after isolation processing, for detecting the electricity of the average value on load resistance RL
In the reasonable scope whether, if exceeding zone of reasonableness, control circuit 401 then controls power supply to be stopped to pressure.Control circuit 401
PWM square waves are obtained according to the first sampled voltage, the numerical value of sample rate current and corresponding control algolithm, PWM square waves are through the IC that overdrives
Chip drives switching tube Q1, controlling switch pipe Q1 turn-on and turn-off.
Assuming that when input current is less than 50A, control circuit 401 adjusts the dutycycle of PWM square waves according to sample rate current Iins
Greatly, increase switching tube Q1 ON times, output voltage increase, because load resistance RL resistance is constant, finally causes
Input current increases；When input current is more than 50A, control circuit 401 is according to sample rate current Iins, by the dutycycle of PWM square waves
Turn down, reduce switching tube Q1 ON times, output voltage reduces, and because load resistance RL resistance is constant, finally makes
Input current is obtained to reduce.After above-mentioned feedback regulation, finally make input current stable in 50A.
Implement constant current input power control circuit of the present utility model, feedback control is carried out using DSP Processor or single-chip microcomputer
System regulation, makes the input current of power supply can fast and stable；Simultaneously using the resistance of constant-resistance value as load, not by environment temperature
Influence, and wide input voltage range, the battery discharging of applicable a variety of different voltage class, during reasonable arrange parameter, voltage
Scope can cover the battery level electric discharge of 10V~400V grades, can meet electric power and communications industry application needs, the scope of application
Extensively, practicality is stronger.
Above example is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement accordingly, protection domain of the present utility model can not be limited.It is all with
The equivalent changes and modifications that the utility model right is done, all should belong to the utility model claim covers model
Enclose.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the utility model appended claims.
Claims (7)
1. a kind of constant current input power controls circuit, it is characterised in that including：
It is connected with external circuit, receives input signal, processing output filtering voltage is filtered to the input signal and is produced
The input module of sampled signal；
It is connected with the input module, converts input voltage into adjustable alternating voltage and the alternating voltage is carried out
The voltage transformation module of the adjustable DC voltage of filtering output；
It is connected with the voltage transformation module, carrying out sampling to the adjustable DC voltage produces the defeated of the second sampled voltage
Go out module；
It is connected respectively with the input module, the voltage transformation module and the output module, based on the sampling letter
Number, second sampled voltage outputs control signals to the voltage transformation module to adjust the control module of input current.
2. constant current input power according to claim 1 controls circuit, it is characterised in that the input module includes：
The input interface being connected with external circuit；
Be connected with the input interface, to the power initiation when soft starting circuit that is limited of the dash current that produces；
It is connected with the soft starting circuit, the first filtered electrical that processing produces filtering voltage is filtered to the input signal
Road；
It is connected between the input interface and the soft starting circuit, carrying out voltage sample to the input signal produces first
The input voltage sample circuit of sampled voltage；
It is connected between the input interface and the soft starting circuit, carrying out current sample to the input signal produces sampling
The input current sample circuit of electric current.
3. constant current input power according to claim 2 controls circuit, it is characterised in that the voltage transformation module bag
Include：
It is connected with first filter circuit, the direct current that the filtering voltage is converted into adjustable alternating voltage changes electricity
Road；
It is connected with the DC converting circuit, the adjustable direct current of processing output is filtered to the adjustable alternating voltage
Second filter circuit of voltage；
It is connected respectively with the control module, the DC converting circuit, the control signal control exported according to the control module
Make the drive circuit of the DC converting circuit.
4. constant current input power according to claim 3 controls circuit, it is characterised in that the output module includes and institute
The output voltage stated the load of the second filter circuit connection and be connected between second filter circuit and the load is adopted
Sample circuit；The output voltage sampling circuit carries out sampling to the adjustable DC voltage and produces the second sampled voltage.
5. constant current input power according to claim 4 controls circuit, it is characterised in that the load is that permanent resistance is born
Carry, the permanent resistance is power resistor.
6. constant current input power according to claim 4 controls circuit, it is characterised in that the control module includes difference
Sampled with the input voltage sample circuit, the input current sample circuit, the drive circuit and the output voltage
Circuit is connected, and the control signal is exported to the control of the drive circuit based on the sampled signal, second sampled voltage
Circuit processed.
7. constant current input power according to claim 6 controls circuit, it is characterised in that the control module also include with
The control circuit connection, the communicating circuit carried out data transmission for the power supply and external monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118905.8U CN206517300U (en) | 2017-02-09 | 2017-02-09 | A kind of constant current input power controls circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118905.8U CN206517300U (en) | 2017-02-09 | 2017-02-09 | A kind of constant current input power controls circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517300U true CN206517300U (en) | 2017-09-22 |
Family
ID=59867244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720118905.8U Active CN206517300U (en) | 2017-02-09 | 2017-02-09 | A kind of constant current input power controls circuit |
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| Country | Link |
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| CN (1) | CN206517300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655768A (en) * | 2017-02-09 | 2017-05-10 | 深圳奥特迅电力设备股份有限公司 | Constant-current input power supply control circuit |
| CN110994356A (en) * | 2019-12-17 | 2020-04-10 | 无锡锐科光纤激光技术有限责任公司 | Constant current power supply circuit for pulse laser |
-
2017
- 2017-02-09 CN CN201720118905.8U patent/CN206517300U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655768A (en) * | 2017-02-09 | 2017-05-10 | 深圳奥特迅电力设备股份有限公司 | Constant-current input power supply control circuit |
| CN110994356A (en) * | 2019-12-17 | 2020-04-10 | 无锡锐科光纤激光技术有限责任公司 | Constant current power supply circuit for pulse laser |
| CN110994356B (en) * | 2019-12-17 | 2021-04-09 | 无锡锐科光纤激光技术有限责任公司 | Constant current power supply circuit for pulse laser |
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