CN206790365U - Power circuit and its manufactured measuring instrument - Google Patents
Power circuit and its manufactured measuring instrument Download PDFInfo
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- CN206790365U CN206790365U CN201720577082.5U CN201720577082U CN206790365U CN 206790365 U CN206790365 U CN 206790365U CN 201720577082 U CN201720577082 U CN 201720577082U CN 206790365 U CN206790365 U CN 206790365U
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- 239000003990 capacitor Substances 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 230000001629 suppression Effects 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A kind of power circuit, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current-limiting resistance, VCC power supply circuits and output circuit；City is electrically accessed civil power input module, exports electric energy by above-mentioned module, the input of VCC power supply circuits is connected to power taking between the first electrochemical capacitor and the second electrochemical capacitor by current-limiting resistance and provides startup power supply.The utility model additionally provides the measuring instrument for including the power circuit.The utility model reduces the voltage stress requirement of VCC power supply circuits, while also improves the reliability of circuit, and also a saving the space of PCB accordingly.
Description
Technical field
The utility model is specifically related to a kind of power circuit and its manufactured measuring instrument.
Background technology
With the development and the improvement of people's living standards of national economy technology, the miniaturization of measuring instrument and reliabilization are set
Meter has become one of developing direction of measuring instrument.
The power circuit of the measuring instrument of external civil power traditional at present is as shown in figure 1, it mainly includes civil power input mould
Block, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor CE1, the second electrochemical capacitor CE2, discharge resistance R1 ~ R4,
Power conversion circuit, feedback circuit, power supply current-limiting resistance R14 ~ R17, VCC power supply circuits and output circuit；City is electrically accessed civil power
After input module, the suppression of surging signal is carried out by Surge suppression and EMC circuits and EMC circuits carry out electromagnetic compatibility protection,
Then by rectifier circuit rectifies it is again direct current, then the direct current after rectification is filtered by the first and second electrochemical capacitors
Power conversion circuit is input to after ripple and carries out power conversion, then passes through output circuit output signal；Feedback circuit is defeated for sampling
Go out the output signal of circuit and feed back to power conversion circuit, VCC power supply circuits pass through from the output cathode power taking of rectification circuit
The resistance of several series connection（Diagram resistance is R14 ~ R17）After current limliting, startup power supply is provided for power conversion circuit；Resistance R1 ~
R4 is the discharge resistance of the first and second electrochemical capacitors, the energy stored on the first and second electrochemical capacitors of releasing in time.
But current power circuit therefore is led because its VCC power supply circuit is from the direct power taking of rectification circuit output end
Cause its power taking voltage higher so that the voltage stress of VCC power supply circuits is higher, larger to the reliability effect of VCC power supply circuits.
Utility model content
One of the purpose of this utility model is to provide that a kind of voltage stress is small, the reliable novel power supply electricity of circuit stability
Road.
The two of the purpose of this utility model are to provide a kind of measuring instrument for including the power circuit.
This power circuit provided by the utility model, including civil power input module, Surge suppression and EMC circuits,
Rectification circuit, the first electrochemical capacitor, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current limliting electricity
Resistance, VCC power supply circuits and output circuit；After city is electrically accessed civil power input module, surge is carried out by Surge suppression and EMC circuits
The suppression of signal and EMC circuits carry out electromagnetic compatibility protection, by rectifier circuit rectifies are again then direct current, straight after rectification
Stream electricity is input to power conversion circuit after being filtered by the first and second electrochemical capacitors and carries out power conversion, then passes through output circuit
Output signal；Feedback circuit is used to sample the output signal of output circuit and feeds back to power conversion circuit, and discharge resistance is in parallel
At electrochemical capacitor module both ends, the energy stored on electrochemical capacitor of releasing, the input of VCC power supply circuits passes through current limliting electricity
Resistance is connected between the first electrochemical capacitor and the second electrochemical capacitor and power taking, so as to provide startup power supply for power conversion circuit.
The utility model is additionally provided using measuring instrument made of the power circuit.
This power circuit provided by the utility model and its manufactured measuring instrument, by the way that original VCC is supplied
The high voltage dc bus that the position to take power of circuit exports from rectification circuit is changed between two electrochemical capacitors, therefore well
The voltage stress requirement of VCC power supply circuits is reduced, while also improves the reliability of circuit, and also a saving accordingly
The space of PCB.
Brief description of the drawings
Fig. 1 is the circuit diagram of existing measuring instrument power circuit.
Fig. 2 is the circuit diagram of measuring instrument power circuit provided by the utility model.
Embodiment
It is illustrated in figure 2 the circuit diagram of measuring instrument power circuit provided by the utility model：The utility model carries
This power circuit supplied, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor
CE1, the second electrochemical capacitor CE2, discharge resistance R1 ~ R4, power conversion circuit, feedback circuit, power supply current-limiting resistance R16 ~ R17,
VCC power supply circuits and output circuit；After city is electrically accessed civil power input module, surge letter is carried out by Surge suppression and EMC circuits
Number suppression and EMC circuits carry out electromagnetic compatibility protection, by rectifier circuit rectifies be again then direct current, the direct current after rectification
Electricity is input to power conversion circuit and carries out power conversion after being filtered by the first and second electrochemical capacitors, then defeated by output circuit
Go out signal；Feedback circuit is used to sample the output signal of output circuit and feeds back to power conversion circuit, and discharge resistance is connected in parallel on
Electrochemical capacitor module both ends, the energy stored on electrochemical capacitor of releasing, the input of VCC power supply circuits pass through current-limiting resistance
Simultaneously power taking is connected between the first electrochemical capacitor and the second electrochemical capacitor, so as to provide startup power supply for power conversion circuit.
This new power circuit provided by the utility model, by the position to take power of VCC power supply circuits by original rectification
Become on the dc bus of circuit output end in the centre of two electrochemical capacitors, can so reduce VCC power supply electricity well
The voltage stress requirement on road, while the reliability of circuit is also improved, and save cost and PCB space.
In addition, this power circuit provided by the utility model, the electronics available for any required power circuit are set
Standby including all types of measuring instrument（Such as electric energy meter, water meter, gas meter, flow meter, calorimeter etc.）, electric energy management terminal, distribution it is whole
End, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator, data acquisition unit, measuring instrument, write by hand
Device, fault detector etc..
Claims (2)
1. a kind of power circuit, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrolysis electricity
Appearance, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current-limiting resistance, VCC power supply circuits and output
Circuit；After city is electrically accessed civil power input module, suppression and the EMC circuits of surging signal are carried out by Surge suppression and EMC circuits
Electromagnetic compatibility protection is carried out, by rectifier circuit rectifies is again then direct current, the direct current after rectification passes through first and second
Power conversion circuit is input to after electrochemical capacitor filtering and carries out power conversion, then passes through output circuit output signal, feedback circuit
For sampling the output signal of output circuit and feeding back to power conversion circuit, discharge resistance is connected in parallel on electrochemical capacitor module two
End, the energy stored on electrochemical capacitor of releasing, it is characterised in that the input of VCC power supply circuits is connected by current-limiting resistance
The simultaneously power taking between the first electrochemical capacitor and the second electrochemical capacitor, so as to provide startup power supply for power conversion circuit.
2. a kind of measuring instrument, it is characterised in that including power circuit described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720577082.5U CN206790365U (en) | 2017-05-23 | 2017-05-23 | Power circuit and its manufactured measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720577082.5U CN206790365U (en) | 2017-05-23 | 2017-05-23 | Power circuit and its manufactured measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790365U true CN206790365U (en) | 2017-12-22 |
Family
ID=60712937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720577082.5U Active CN206790365U (en) | 2017-05-23 | 2017-05-23 | Power circuit and its manufactured measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998149A (en) * | 2017-05-23 | 2017-08-01 | 湖南晟和电子技术有限公司 | Power circuit, method of supplying power to and its measuring instrument being made |
-
2017
- 2017-05-23 CN CN201720577082.5U patent/CN206790365U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998149A (en) * | 2017-05-23 | 2017-08-01 | 湖南晟和电子技术有限公司 | Power circuit, method of supplying power to and its measuring instrument being made |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone in Hunan province Changsha slope 410205 West Road No. 11 building 101 floor No. 1-8 Patentee after: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. Address before: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone, Hunan province Changsha road 410205 No. 11 building 101 floor No. 1-8 Patentee before: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231107 Address after: Room 101, 3rd Floor, Building 11, Phase II of Weisheng Science and Technology Park, No. 468 Tongzipo West Road, High tech Development Zone, Changsha City, Hunan Province, 410205 Patentee after: Hunan Shenghe Intelligent Control Technology Co.,Ltd. Address before: 410205 no.1-8, 3rd floor, 101, No.11 plant, phase II project, Weisheng Science Park, no.468, tongzipo West Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. |