CN204028156U - A kind of inductive current change-over circuit - Google Patents
A kind of inductive current change-over circuit Download PDFInfo
- Publication number
- CN204028156U CN204028156U CN201420357700.1U CN201420357700U CN204028156U CN 204028156 U CN204028156 U CN 204028156U CN 201420357700 U CN201420357700 U CN 201420357700U CN 204028156 U CN204028156 U CN 204028156U
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- inverting input
- signal output
- resistor
- input terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001939 inductive effect Effects 0.000 title claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Networks Using Active Elements (AREA)
Abstract
本实用新型涉及一种电路结构，尤其是一种电感电流转换电路。它包括四个运算放大器和七个电阻；其中，第一运算放大器的同相输入端通过第一电阻连接第二运算放大器的同相输入端，第一运算放大器的反相输入端和第二运算放大器的反相输入端分别与各自的信号输出端短接；第一运算放大器的信号输出端通过第二电阻连接第三运算放大器的反相输入端，第二运算放大器的信号输出端通过第三电阻连接第三运算放大器的同相输入端；第三运算放大器的反相输入端通过第四电阻连接其信号输出端，第三运算放大器的信号输出端通过第六电阻连接第四运算放大器的反相输入端；第四运算放大器的反相输入端通过第七电阻连接其信号输出端。本实用新型的电路结构简单、实用性强。
The utility model relates to a circuit structure, in particular to an inductance current conversion circuit. It includes four operational amplifiers and seven resistors; among them, the non-inverting input terminal of the first operational amplifier is connected to the non-inverting input terminal of the second operational amplifier through the first resistor, the inverting input terminal of the first operational amplifier and the The inverting input terminals are respectively short-circuited with the respective signal output terminals; the signal output terminal of the first operational amplifier is connected to the inverting input terminal of the third operational amplifier through the second resistor, and the signal output terminal of the second operational amplifier is connected through the third resistor The noninverting input terminal of the third operational amplifier; the inverting input terminal of the third operational amplifier is connected to its signal output terminal through the fourth resistor, and the signal output terminal of the third operational amplifier is connected to the inverting input terminal of the fourth operational amplifier through the sixth resistor ; The inverting input terminal of the fourth operational amplifier is connected to its signal output terminal through the seventh resistor. The utility model has a simple circuit structure and strong practicability.
Description
技术领域technical field
本实用新型涉及一种电路结构，尤其是一种电感电流转换电路。The utility model relates to a circuit structure, in particular to an inductance current conversion circuit.
背景技术Background technique
周知，对于线性电路和非线性电路所使用的电感或电容等电子元件而言，对其运行时的性能检测或参数测量，均不便于使用示波器进行直接显示，而是需要将此类电子元件上所经过的电流信号转换为电压信号或者将电压信号进行放大后，送入示波器进行测量显示。As we all know, for electronic components such as inductors or capacitors used in linear circuits and nonlinear circuits, it is not convenient to use an oscilloscope to directly display the performance detection or parameter measurement during operation, but it is necessary to place such electronic components on the The passed current signal is converted into a voltage signal or the voltage signal is amplified, and then sent to the oscilloscope for measurement and display.
现有的电路中(如混沌电路)所采用的转换电路结构比较复杂、成本高、准确度低；因此，有必要对现有的转换电路进行结构优化。The conversion circuit used in existing circuits (such as chaotic circuits) has a complex structure, high cost, and low accuracy; therefore, it is necessary to optimize the structure of the existing conversion circuit.
实用新型内容Utility model content
针对上述现有技术中存在的不足，本实用新型的目的在于提供一种电路结构简单的电感电流转换电路。In view of the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide an inductance-current conversion circuit with a simple circuit structure.
为了实现上述目的，本实用新型采用如下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
一种电感电流转换电路，它包括第一运算放大器、第二运算放大器、第三运算放大器、第四运算放大器、第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、第六电阻和第七电阻；An inductance current conversion circuit, which includes a first operational amplifier, a second operational amplifier, a third operational amplifier, a fourth operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a Six resistors and a seventh resistor;
所述第一运算放大器的同相输入端通过第一电阻连接第二运算放大器的同相输入端，所述第一运算放大器的反相输入端与其信号输出端短接，所述第二运算放大器的反相输入端与其信号输出端短接；The noninverting input terminal of the first operational amplifier is connected to the noninverting input terminal of the second operational amplifier through the first resistor, the inverting input terminal of the first operational amplifier is short-circuited with its signal output terminal, and the inverting input terminal of the second operational amplifier is short-circuited. The phase input terminal is short-circuited with its signal output terminal;
所述第一运算放大器的信号输出端通过第二电阻连接第三运算放大器的反相输入端，所述第二运算放大器的信号输出端通过第三电阻连接第三运算放大器的同相输入端；The signal output terminal of the first operational amplifier is connected to the inverting input terminal of the third operational amplifier through the second resistor, and the signal output terminal of the second operational amplifier is connected to the non-inverting input terminal of the third operational amplifier through the third resistor;
所述第三运算放大器的反相输入端通过第四电阻连接其信号输出端、同相输入端通过第五电阻接地，所述第三运算放大器的信号输出端通过第六电阻连接第四运算放大器的反相输入端；The inverting input terminal of the third operational amplifier is connected to its signal output terminal through the fourth resistor, and the non-inverting input terminal is grounded through the fifth resistor, and the signal output terminal of the third operational amplifier is connected to the fourth operational amplifier through the sixth resistor. inverting input;
所述第四运算放大器的反相输入端通过第七电阻连接其信号输出端、同相输入端接地。The inverting input terminal of the fourth operational amplifier is connected to its signal output terminal through the seventh resistor, and the non-inverting input terminal is grounded.
由于采用了上述方案，本实用新型利用第一运算放大器和第二运算放大器作为被测电路中的电感元件两端的电压输入端，利用第四运算放大器作为最终电压信号的输出端以与示波器连接，从而实现“电流—电压—放大-输出-显示”的检测和测量过程，其电路结构简单，有利于降低电路成本并提高电路的稳定性，具有很强的实用性。Due to the above scheme, the utility model utilizes the first operational amplifier and the second operational amplifier as the voltage input terminals at both ends of the inductance element in the circuit under test, and utilizes the fourth operational amplifier as the output terminal of the final voltage signal to be connected with the oscilloscope. In this way, the detection and measurement process of "current-voltage-amplification-output-display" is realized. The circuit structure is simple, which is beneficial to reduce circuit cost and improve circuit stability, and has strong practicability.
附图说明Description of drawings
图1是本实用新型实施例的电路结构图。Fig. 1 is a circuit structure diagram of the utility model embodiment.
具体实施方式Detailed ways
以下结合附图对本实用新型的实施例进行详细说明，但是本实用新型可以由权利要求限定和覆盖的多种不同方式实施。The embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, but the utility model can be implemented in various ways defined and covered by the claims.
如图1所示，本实施例的电感电流转换电路，它包括第一运算放大器Q1、第二运算放大器Q2、第三运算放大器Q3、第四运算放大器Q4、第一电阻R1、第二电阻R2、第三电阻R3、第四电阻R4、第五电阻R5、第六电阻R6和第七电阻R7等电子元件。As shown in Figure 1, the inductance current conversion circuit of the present embodiment comprises a first operational amplifier Q1, a second operational amplifier Q2, a third operational amplifier Q3, a fourth operational amplifier Q4, a first resistor R1, and a second resistor R2 , the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 and other electronic components.
其中，第一运算放大器Q1的同相输入端通过第一电阻R1连接第二运算放大器Q2的同相输入端，第一运算放大器Q1的反相输入端与其信号输出端短接，第二运算放大器Q2的反相输入端与其信号输出端短接；第一运算放大器Q1的信号输出端通过第二电阻R2连接第三运算放大器Q3的反相输入端，第二运算放大器Q2的信号输出端通过第三电阻R3连接第三运算放大器Q3的同相输入端；第三运算放大器Q3的反相输入端通过第四电阻R4连接其信号输出端、同相输入端则通过第五电阻R5接地，第三运算放大器Q3的信号输出端通过第六电阻R6连接第四运算放大器Q4的反相输入端；第四运算放大器Q4的反相输入端通过第七电阻R7连接其信号输出端、同相输入端则直接接地。Wherein, the non-inverting input terminal of the first operational amplifier Q1 is connected to the non-inverting input terminal of the second operational amplifier Q2 through the first resistor R1, the inverting input terminal of the first operational amplifier Q1 is short-circuited with its signal output terminal, the second operational amplifier Q2 The inverting input terminal and its signal output terminal are short-circuited; the signal output terminal of the first operational amplifier Q1 is connected to the inverting input terminal of the third operational amplifier Q3 through the second resistor R2, and the signal output terminal of the second operational amplifier Q2 is connected through the third resistor R3 is connected to the non-inverting input terminal of the third operational amplifier Q3; the inverting input terminal of the third operational amplifier Q3 is connected to its signal output terminal through the fourth resistor R4, the non-inverting input terminal is grounded through the fifth resistor R5, and the third operational amplifier Q3 The signal output terminal is connected to the inverting input terminal of the fourth operational amplifier Q4 through the sixth resistor R6; the inverting input terminal of the fourth operational amplifier Q4 is connected to the signal output terminal through the seventh resistor R7, and the non-inverting input terminal is directly grounded.
如此，可利用第二运算放大器Q2的同相输入端串联待测电路中的电感元件，以通过第一运算放大器Q1和第二运算放大器Q2将被测电感元件两端的电压进行初步放大，再利用第三运算放大器Q3和第四运算放大器Q4进行二次放大，最终将由第四运算放大器Q4的信号输出端输出的电压信号直接输送至示波器中进行显示，即可完成电路中电感元件的运行参数测量和性能检测。In this way, the inductance element in the circuit to be tested can be connected in series with the non-inverting input terminal of the second operational amplifier Q2, so as to preliminarily amplify the voltage at both ends of the measured inductance element through the first operational amplifier Q1 and the second operational amplifier Q2, and then use the second The third operational amplifier Q3 and the fourth operational amplifier Q4 carry out secondary amplification, and finally the voltage signal output by the signal output terminal of the fourth operational amplifier Q4 is directly sent to the oscilloscope for display, and the measurement and operation parameters of the inductive elements in the circuit can be completed. Performance testing.
本实施例的转换电路结构简单，有利于降低电路成本及提高检测的准确性，具有很强的实用性和市场推广价值。The conversion circuit of this embodiment has a simple structure, which is beneficial to reduce circuit cost and improve detection accuracy, and has strong practicality and market promotion value.
以上所述仅为本实用新型的优选实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357700.1U CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357700.1U CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028156U true CN204028156U (en) | 2014-12-17 |
Family
ID=52067998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357700.1U Expired - Lifetime CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668920A (en) * | 2016-12-12 | 2017-05-17 | 东莞市志诚电器有限公司 | Multifunctional sterilizing and washing integrated machine |
| CN112151322A (en) * | 2020-10-20 | 2020-12-29 | 罗格朗低压电器（无锡）有限公司 | Circuit breaker overload alarm does not trip |
-
2014
- 2014-06-30 CN CN201420357700.1U patent/CN204028156U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668920A (en) * | 2016-12-12 | 2017-05-17 | 东莞市志诚电器有限公司 | Multifunctional sterilizing and washing integrated machine |
| CN112151322A (en) * | 2020-10-20 | 2020-12-29 | 罗格朗低压电器（无锡）有限公司 | Circuit breaker overload alarm does not trip |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207976519U (en) | A kind of direct-current high voltage detection circuit | |
| CN108318729A (en) | A kind of direct-current high voltage detection circuit | |
| CN102818934A (en) | Direct-current resistance measuring circuit for inductor | |
| CN103151993B (en) | Accurate alternating current amplifier | |
| CN202975066U (en) | High-impedance active differential probe circuit | |
| CN103142250B (en) | Ultrasonic Doppler signal detection circuit | |
| CN204028156U (en) | A kind of inductive current change-over circuit | |
| CN203287421U (en) | three-phase alternating voltage and current measuring circuit | |
| CN203193573U (en) | Precision AC Current Amplifier | |
| CN207336632U (en) | A kind of radio-frequency power supply power-sensing circuit | |
| CN203894320U (en) | Voltage measuring device | |
| CN207301151U (en) | A kind of capacitive divider | |
| CN204028157U (en) | A kind of convert of capacitor to voltage circuit | |
| CN204008832U (en) | A kind of sampling A/D chip and the sample circuit of built-in AD to same passage of measuring | |
| CN100466474C (en) | Voltage to current conversion circuit device | |
| CN104280679B (en) | High speed operation amplifier test circuit based on FLEX | |
| CN202794285U (en) | Isolation processing circuit for small analog alternating current (AC) or direct current (DC) signals | |
| CN206389340U (en) | A kind of filter in transformer frequency sweep impedance method | |
| CN105262461B (en) | A kind of small-signal supercircuit and stacking method | |
| CN104038161A (en) | Module for amplifying signals in gas concentration detection system of transformer substation | |
| CN204131469U (en) | For calibrating the accurate alternating voltage amplifier of lightning arrester block property current tester | |
| CN204575838U (en) | A kind of meter resistance measurement mechanism | |
| CN211554149U (en) | Inductance and capacitance detection circuit | |
| CN204202773U (en) | A kind of high-frequency and high-voltage power supply temperature sensing circuit | |
| CN103412186A (en) | Ring main unit current collecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20150727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lang Yongbo Inventor after: Jia Likai Inventor after: Wu Hao Inventor after: Zhang Qi Inventor before: Jia Likai Inventor before: Lang Yongbo Inventor before: Wu Hao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIA LIKAI LANG YONGBO WU HAO TO: LANG YONGBO JIA LIKAI WU HAO ZHANG QI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150727 Address after: 133000 No. 332 Guangming Street, Yanbian Korean Autonomous Prefecture, Jilin, Yanji Province Patentee after: YANBIAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY CO. Patentee after: State Grid Corporation of China Address before: 133000 No. 332 Guangming Street, Yanbian Korean Autonomous Prefecture, Jilin, Yanji Province Patentee before: YANBIAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY CO. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |
|
| CX01 | Expiry of patent term |