CN204721242U - A kind of power circuit - Google Patents
A kind of power circuit Download PDFInfo
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- CN204721242U CN204721242U CN201520434765.6U CN201520434765U CN204721242U CN 204721242 U CN204721242 U CN 204721242U CN 201520434765 U CN201520434765 U CN 201520434765U CN 204721242 U CN204721242 U CN 204721242U
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- 239000004065 semiconductor Substances 0.000 claims abstract description 19
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 7
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of power circuit, comprise rectifier bridge Q, resistance R1, diode VD1, electric capacity C1, metal-oxide-semiconductor VS, chip U1 and potentiometer RP1, rectifier bridge Q pin 1 is connected 220V alternating current two ends respectively with rectifier bridge Q pin 3, rectifier bridge Q pin 2 connects electric capacity C5 respectively, diode VD1 positive pole, resistance R2 and resistance R6, diode VD1 negative pole contact resistance R1, the resistance R1 other end connects diode VD2 negative pole respectively, electric capacity C1, chip U1 pin 8 and resistance R4, the electric capacity C5 other end connects rectifier bridge Q pin 4 respectively, diode VD2 positive pole, the electric capacity C1 other end, potentiometer RP1, chip U1 pin 1, electric capacity C2, electric capacity C3, potentiometer RP2 and electric capacity C4 ground connection.The utility model power circuit does not adopt transformer, and use metal-oxide-semiconductor VS and chip U1 to coordinate and control voltage stabilizing, voltage regulation result is good, and cost is low, and volume is little, is applicable to very much promoting the use of.
Description
Technical field
The utility model relates to a kind of power supply, specifically a kind of power circuit.
Background technology
Along with the development of science and technology, power circuit is as the requisite part of electric equipment, how to make that the voltage regulation result of power circuit is good and volume is little, it is the emphasis studied in the industry always, but existing voltage stabilizing circuit adopts high frequency transformer to realize voltage transformation mostly, the volume adopting transformer to result in power circuit increases, and cost improves.
Utility model content
The purpose of this utility model is to provide the power circuit that a kind of volume is little, cost is low, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of power circuit, comprises rectifier bridge Q, resistance R1, diode VD1, electric capacity C1, metal-oxide-semiconductor VS, chip U1 and potentiometer RP1, described rectifier bridge Q pin 1 is connected 220V alternating current two ends respectively with rectifier bridge Q pin 3, and rectifier bridge Q pin 2 connects electric capacity C5 respectively, diode VD1 positive pole, resistance R2 and resistance R6, diode VD1 negative pole contact resistance R1, the resistance R1 other end connects diode VD2 negative pole respectively, electric capacity C1, chip U1 pin 8 and resistance R4, the electric capacity C5 other end connects rectifier bridge Q pin 4 respectively, diode VD2 positive pole, the electric capacity C1 other end, potentiometer RP1, chip U1 pin 1, electric capacity C2, electric capacity C3, potentiometer RP2 and electric capacity C4 ground connection, the potentiometer RP1 other end connects potentiometer RP1 slide plate respectively, chip U1 pin 2, chip U1 pin 6 and the resistance R2 other end, chip U1 pin 7 connects diode VD3 negative pole, the diode VD3 positive pole contact resistance R4 other end, chip U1 pin 5 connects electric capacity C2, chip U1 pin 3 contact resistance R3, the resistance R3 other end connects the G pole of metal-oxide-semiconductor VS, the D pole contact resistance R6 other end of metal-oxide-semiconductor VS, and the S pole of metal-oxide-semiconductor VS connects the electric capacity C3 other end respectively, resistance R2, the electric capacity C4 other end and output end vo, the resistance R2 other end connects the potentiometer RP2 other end, and potentiometer RP2 slide plate connects chip U1 pin 4, and described chip U1 model is NE7555.
As further program of the utility model: described diode VD3 is Light-Emitting Diode.
As the utility model further scheme: described diode VD2 is voltage stabilizing didoe.
Compared with prior art, the beneficial effects of the utility model are: the utility model power circuit does not adopt transformer, and use metal-oxide-semiconductor VS and chip U1 to coordinate and control voltage stabilizing, voltage regulation result is good, and cost is low, and volume is little, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of power circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of power circuit, comprises rectifier bridge Q, resistance R1, diode VD1, electric capacity C1, metal-oxide-semiconductor VS, chip U1 and potentiometer RP1, rectifier bridge Q pin 1 is connected 220V alternating current two ends respectively with rectifier bridge Q pin 3, and rectifier bridge Q pin 2 connects electric capacity C5 respectively, diode VD1 positive pole, resistance R2 and resistance R6, diode VD1 negative pole contact resistance R1, the resistance R1 other end connects diode VD2 negative pole respectively, electric capacity C1, chip U1 pin 8 and resistance R4, the electric capacity C5 other end connects rectifier bridge Q pin 4 respectively, diode VD2 positive pole, the electric capacity C1 other end, potentiometer RP1, chip U1 pin 1, electric capacity C2, electric capacity C3, potentiometer RP2 and electric capacity C4 ground connection, the potentiometer RP1 other end connects potentiometer RP1 slide plate respectively, chip U1 pin 2, chip U1 pin 6 and the resistance R2 other end, chip U1 pin 7 connects diode VD3 negative pole, the diode VD3 positive pole contact resistance R4 other end, chip U1 pin 5 connects electric capacity C2, chip U1 pin 3 contact resistance R3, the resistance R3 other end connects the G pole of metal-oxide-semiconductor VS, the D pole contact resistance R6 other end of metal-oxide-semiconductor VS, and the S pole of metal-oxide-semiconductor VS connects the electric capacity C3 other end respectively, resistance R2, the electric capacity C4 other end and output end vo, the resistance R2 other end connects the potentiometer RP2 other end, and it is NE7555 that potentiometer RP2 slide plate connects chip U1 pin 4, chip U1 model.
Diode VD3 is Light-Emitting Diode.
Diode VD2 is voltage stabilizing didoe.
Operation principle of the present utility model is: refer to Fig. 1, civil power is first by rectifier bridge Q rectification, obtain the Rectified alternating current of 100Hz, its peak-peak can reach 310V, chip U1 and peripheral resistor-capacitor unit composition civil power Super-zero control circuit thereof, Rectified alternating current is through diode VD1 isolated buck, diode VD2 voltage stabilizing, electric capacity C1 is filtered into chip U1 and provides stable power-supplying, resistance R2, potentiometer RP1 forms city's electro-detection bleeder circuit, when general Rectified alternating current zero passage voltage is lower than 13V, chip U1 pin 2 is triggered, chip U1 pin 3 exports high level, metal-oxide-semiconductor VS conducting, Rectified alternating current is through resistance R6 current limliting, by metal-oxide-semiconductor VS to electric capacity C3, electric capacity C4 charges rapidly, maximum instantaneous electric current can reach more than 4A, resistance R5, potentiometer RP2 and chip U1 pin 4 form Voltage Feedback control circuit, regulator potentiometer RR2 can obtain the output voltage of 5 ~ 12V, as long as chip U1 pin 4 voltage is greater than 0.7V, chip U1 is namely by general reset, chip U1 pin 3 output low level, metal-oxide-semiconductor VS ends.Like this, except metal-oxide-semiconductor VS ON time, electric capacity C3, electric capacity C4 keep to load output current, large bulk capacitance C3, C4 can ensure that maximum output current still has stable output voltage when reaching 100mA, resistance R4, diode VD3 are power supply indicating circuit, stagger because the conducting of transistor in chip U1 pin 7 and chip U1 pin 3 export high level, this just alleviates the power consumption of control circuit, ensure that the reliable of control circuit work, in addition, employing chip U1 pin 6 is common to city's electro-detection with chip U1 pin 2, also makes circuit be provided with overvoltage blocking function.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a power circuit, comprises rectifier bridge Q, resistance R1, diode VD1, electric capacity C1, metal-oxide-semiconductor VS, chip U1 and potentiometer RP1, is characterized in that, described rectifier bridge Q pin 1 is connected 220V alternating current two ends respectively with rectifier bridge Q pin 3, and rectifier bridge Q pin 2 connects electric capacity C5 respectively, diode VD1 positive pole, resistance R2 and resistance R6, diode VD1 negative pole contact resistance R1, the resistance R1 other end connects diode VD2 negative pole respectively, electric capacity C1, chip U1 pin 8 and resistance R4, the electric capacity C5 other end connects rectifier bridge Q pin 4 respectively, diode VD2 positive pole, the electric capacity C1 other end, potentiometer RP1, chip U1 pin 1, electric capacity C2, electric capacity C3, potentiometer RP2 and electric capacity C4 ground connection, the potentiometer RP1 other end connects potentiometer RP1 slide plate respectively, chip U1 pin 2, chip U1 pin 6 and the resistance R2 other end, chip U1 pin 7 connects diode VD3 negative pole, the diode VD3 positive pole contact resistance R4 other end, chip U1 pin 5 connects electric capacity C2, chip U1 pin 3 contact resistance R3, the resistance R3 other end connects the G pole of metal-oxide-semiconductor VS, the D pole contact resistance R6 other end of metal-oxide-semiconductor VS, and the S pole of metal-oxide-semiconductor VS connects the electric capacity C3 other end respectively, resistance R2, the electric capacity C4 other end and output end vo, the resistance R2 other end connects the potentiometer RP2 other end, and potentiometer RP2 slide plate connects chip U1 pin 4, and described chip U1 model is NE7555.
2. power circuit according to claim 1, is characterized in that, described diode VD3 is Light-Emitting Diode.
3. power circuit according to claim 1, is characterized in that, described diode VD2 is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434765.6U CN204721242U (en) | 2015-06-23 | 2015-06-23 | A kind of power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434765.6U CN204721242U (en) | 2015-06-23 | 2015-06-23 | A kind of power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204721242U true CN204721242U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520434765.6U Expired - Fee Related CN204721242U (en) | 2015-06-23 | 2015-06-23 | A kind of power circuit |
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| Country | Link |
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| CN (1) | CN204721242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168207A (en) * | 2017-06-16 | 2017-09-15 | 合肥讯邦网络科技有限公司 | A kind of control system based on Internet of Things |
| CN110677061A (en) * | 2019-09-30 | 2020-01-10 | 徐州柏兴电子有限公司 | Voltage stabilizing circuit of power-supply-free transformer |
| CN114115416A (en) * | 2021-11-10 | 2022-03-01 | 吕梁学院 | A Reference Source for Precision Regulation of Voltage |
-
2015
- 2015-06-23 CN CN201520434765.6U patent/CN204721242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168207A (en) * | 2017-06-16 | 2017-09-15 | 合肥讯邦网络科技有限公司 | A kind of control system based on Internet of Things |
| CN110677061A (en) * | 2019-09-30 | 2020-01-10 | 徐州柏兴电子有限公司 | Voltage stabilizing circuit of power-supply-free transformer |
| CN114115416A (en) * | 2021-11-10 | 2022-03-01 | 吕梁学院 | A Reference Source for Precision Regulation of Voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151229 Address after: 510800 Guangdong city in Guangzhou Province, Xinhua Street, Tian Village economic cooperatives southeast Huadu District days Road No. 62 building room 708 Patentee after: Guangzhou Yingfan Electrical Technology Co., Ltd. Address before: 315700 Xiangshan, Zhejiang, Ningbo, Jianshe Road Patentee before: Zheng Aimin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160623 |