CN203941225U - A kind of current monitoring circuit - Google Patents
A kind of current monitoring circuit Download PDFInfo
- Publication number
- CN203941225U CN203941225U CN201420272311.9U CN201420272311U CN203941225U CN 203941225 U CN203941225 U CN 203941225U CN 201420272311 U CN201420272311 U CN 201420272311U CN 203941225 U CN203941225 U CN 203941225U
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- China
- Prior art keywords
- diode
- resistance
- electrochemical capacitor
- electric capacity
- positive pole
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- 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 - Fee Related
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a kind of circuit, is specifically related to a kind of current monitoring circuit.For a kind of long transmission distance is provided, sampling efficiency is high, the circuit of signal stabilization, the utility model comprises the signal source with two outlets, power supply, sampling resistor, the first resistance, the second resistance, the 3rd resistance, the first diode, the second diode, the 3rd diode, the 4th diode, the first electrochemical capacitor, the second electric capacity, the 3rd electric capacity, the 4th electrochemical capacitor, the 5th electric capacity, the 6th electrochemical capacitor, inductance, the little electric current that the utility model converts 100A/AC to 2.5mA/AC by two-stage mutual inductor facilitates long-distance transmissions, simple and convenient through actual this circuit structure of test, long transmission distance, sampling efficiency is high, signal stabilization.
Description
Technical field
The utility model relates to a kind of circuit, is specifically related to a kind of current monitoring circuit.
Background technology
In recent years; along with the develop rapidly of Power Electronic Technique and a large amount of uses of integral control circuit; fast, in accurate and safe detection system, parameters seems particularly important, affects one of key of the reliable and stable operation of system when the monitoring of Zhu's circuital current and holding circuit.Have in the market many separate current sensors for user, but price is relatively expensive, transmission more difficult realization at a distance, loss of signal is larger.This circuit structure is simple, and monitoring accurately, can be transmitted few compared with distant signal loss through actual test.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of current monitoring circuit is provided, this circuit transmission distance, and sampling efficiency is high, signal stabilization.
In order to achieve the above object, the utility model comprises signal source, power supply, sampling resistor, the first resistance, the second resistance, the 3rd resistance, the first diode, the second diode, the 3rd diode, the 4th diode, the first electrochemical capacitor, the second electric capacity, the 3rd electric capacity, the 4th electrochemical capacitor, the 5th electric capacity, the 6th electrochemical capacitor, the inductance with two outlets;
One end of described positive source connecting signal source, one end of sampling resistor, the positive pole of the negative pole of the first diode and the second diode, the other end of power cathode connecting signal source, the other end of sampling resistor, the positive pole of the negative pole of the 3rd diode and the 4th diode, the negative pole of the second diode connects the negative pole of the 4th diode, the positive pole of the first electrochemical capacitor, one end of one end of the second electric capacity and the first resistance, the minus earth of the first electrochemical capacitor, the other end of the second electric capacity connects the positive pole of the first diode, one end of the positive pole of the 3rd diode and the second resistance, the other end of the first resistance connects one end of the other end and the 3rd resistance of the second resistance, the other end of the 3rd resistance connects one end of the 3rd electric capacity, the 4th positive pole of electrochemical capacitor and one end of inductance, the other end of inductance connects one end of the 5th electric capacity, the positive pole of the 6th electrochemical capacitor and signal outlet,
The other end ground connection of described the 3rd electric capacity, the minus earth of the 4th electrochemical capacitor, the other end ground connection of the 5th electric capacity, the minus earth of the 6th electrochemical capacitor.
Compared with prior art, the utility model is sampled to AC signal by sampling resistor, current signal is become to voltage signal, after by the first diode, the second diode, the 3rd diode and the 4th diode carry out bridge rectifier, the first electrochemical capacitor and the second electric capacity carry out filtering, after rectifying and wave-filtering, the voltage signal of interchange is become to d. c. voltage signal, the first resistance and the second resistance carry out voltage division processing by d. c. voltage signal, finally from the 3rd resistance terminal, take out required voltage, the 3rd electric capacity, the 4th electrochemical capacitor, inductance, the 5th electric capacity and the 6th electrochemical capacitor are the filtering of π shape, make circuit there is stronger antijamming capability, the little electric current that converts 100A/AC to 2.5mA/AC by two-stage mutual inductor facilitates long-distance transmissions, simple and convenient through actual this circuit structure of test, long transmission distance, sampling efficiency is high, signal stabilization.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Referring to Fig. 1, the utility model comprises signal source, power supply, sampling resistor R1, the first resistance R 2, the second resistance R 3, the 3rd resistance R 5, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first electrochemical capacitor C1, the second capacitor C 2, the 3rd capacitor C 3, the 4th electrochemical capacitor C4, the 5th capacitor C 5, the 6th electrochemical capacitor C6, the inductance L 1 with two outlets;
One end of positive source connecting signal source, one end of sampling resistor R1, the positive pole of the negative pole of the first diode D1 and the second diode D2, the other end of power cathode connecting signal source, the other end of sampling resistor R1, the positive pole of the negative pole of the 3rd diode D3 and the 4th diode D4, the negative pole of the second diode D2 connects the negative pole of the 4th diode D4, the positive pole of the first electrochemical capacitor C1, one end of one end of the second capacitor C 2 and the first resistance R 2, the minus earth of the first electrochemical capacitor C1, the other end of the second capacitor C 2 connects the positive pole of the first diode D1, one end of the positive pole of the 3rd diode D3 and the second resistance R 3, the other end of the first resistance R 2 connects the other end of the second resistance R 3 and one end of the 3rd resistance R 5, the other end of the 3rd resistance R 5 connects one end of the 3rd capacitor C 3, one end of the positive pole of the 4th electrochemical capacitor C4 and inductance L 1, the other end of inductance L 1 connects one end of the 5th capacitor C 5, the positive pole of the 6th electrochemical capacitor C6 and signal outlet,
The other end ground connection of described the 3rd capacitor C 3, the minus earth of the 4th electrochemical capacitor C4, the other end ground connection of the 5th capacitor C 5, the minus earth of the 6th electrochemical capacitor C6.
Claims (1)
1. a current monitoring circuit, is characterized in that: comprise signal source, power supply, sampling resistor (R1), the first resistance (R2), the second resistance (R3), the 3rd resistance (R5), the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4), the first electrochemical capacitor (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electrochemical capacitor (C4), the 5th electric capacity (C5), the 6th electrochemical capacitor (C6), the inductance (L1) with two outlets;
One end of described positive source connecting signal source, one end of sampling resistor (R1), the positive pole of the negative pole of the first diode (D1) and the second diode (D2), the other end of power cathode connecting signal source, the other end of sampling resistor (R1), the positive pole of the negative pole of the 3rd diode (D3) and the 4th diode (D4), the negative pole of the second diode (D2) connects the negative pole of the 4th diode (D4), the positive pole of the first electrochemical capacitor (C1), one end of one end of the second electric capacity (C2) and the first resistance (R2), the minus earth of the first electrochemical capacitor (C1), the other end of the second electric capacity (C2) connects the positive pole of the first diode (D1), one end of the positive pole of the 3rd diode (D3) and the second resistance (R3), the other end of the first resistance (R2) connects one end of the other end and the 3rd resistance (R5) of the second resistance (R3), the other end of the 3rd resistance (R5) connects one end of the 3rd electric capacity (C3), one end of the positive pole of the 4th electrochemical capacitor (C4) and inductance (L1), the other end of inductance (L1) connects one end of the 5th electric capacity (C5), positive pole and the signal outlet of the 6th electrochemical capacitor (C6),
The other end ground connection of described the 3rd electric capacity (C3), the minus earth of the 4th electrochemical capacitor (C4), the other end ground connection of the 5th electric capacity (C5), the minus earth of the 6th electrochemical capacitor (C6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272311.9U CN203941225U (en) | 2014-05-26 | 2014-05-26 | A kind of current monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272311.9U CN203941225U (en) | 2014-05-26 | 2014-05-26 | A kind of current monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941225U true CN203941225U (en) | 2014-11-12 |
Family
ID=51860528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272311.9U Expired - Fee Related CN203941225U (en) | 2014-05-26 | 2014-05-26 | A kind of current monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941225U (en) |
-
2014
- 2014-05-26 CN CN201420272311.9U patent/CN203941225U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Feigang Inventor after: Yuan Xiaobin Inventor after: Jiang Jiukui Inventor before: Liu Feigang Inventor before: Guo Yujie Inventor before: Yuan Xiaobin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU FEIGANG GUO YUJIE YUAN XIAOBIN TO: LIU FEIGANG YUAN XIAOBIN JIANG JIUKUI |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20210526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |