CN204424895U - A kind of reverse-connection protection circuit of solar refrigerating device - Google Patents
A kind of reverse-connection protection circuit of solar refrigerating device Download PDFInfo
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- CN204424895U CN204424895U CN201520061852.1U CN201520061852U CN204424895U CN 204424895 U CN204424895 U CN 204424895U CN 201520061852 U CN201520061852 U CN 201520061852U CN 204424895 U CN204424895 U CN 204424895U
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Abstract
The utility model discloses a kind of reverse-connection protection circuit of solar refrigerating device, it is characterized in that, comprise: DC supply input inDC+, DC supply input inDC-, resistance R1, resistance R2, voltage stabilizing didoe D1, isolated gate FET Q1, output OUT+ and output OUT-, wherein resistance R1 one end is connected with output OUT+ with DC supply input inDC+, the other end of resistance R1 connects the grid of isolated gate FET Q1 and one end of resistance R2 and the negative pole end of voltage stabilizing didoe D1, the source electrode of isolated gate FET Q1 is connected with DC supply input inDC-, simultaneously, positive pole and the output OUT-of the drain electrode of isolated gate FET Q1 and the other end of resistance R2 and voltage stabilizing didoe D1 are connected.Wherein, described isolated gate FET is N-type Metal-Oxide Semiconductor field-effect transistor.This circuit has contactless, noiselessness, the advantages such as volume is little, low in energy consumption.
Description
Technical field
The utility model relates to a kind of power circuit, particularly relates to a kind of reverse-connection protection circuit of solar refrigerating device.
Background technology
The anti-protective circuit of battery of present use is all use relay switching circuit, and its relay switch is there is sparking phenomenon of arc discharge and have noise to exist opening, turning off.And when battery does not fill electric, caused by inconvenient judgment is the problem of battery or the problem of charger itself.
When using common reversal connection protection function, the corresponding power consumption of relay is comparatively large and circuit volume also can be huger.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of reverse-connection protection circuit of solar refrigerating device.
It is as follows that the utility model solves the problems of the technologies described above taked technical scheme.
A kind of reverse-connection protection circuit of solar refrigerating device, it is characterized in that, comprise: DC supply input inDC+, DC supply input inDC-, resistance R1, resistance R2, voltage stabilizing didoe D1, isolated gate FET Q1, output OUT+ and output OUT-, wherein resistance R1 one end is connected with output OUT+ with DC supply input inDC+, the other end of resistance R1 connects the grid of isolated gate FET Q1 and one end of resistance R2 and the negative pole end of voltage stabilizing didoe D1, the source electrode of isolated gate FET Q1 is connected with DC supply input inDC-, simultaneously, positive pole and the output OUT-of the drain electrode of isolated gate FET Q1 and the other end of resistance R2 and voltage stabilizing didoe D1 are connected.
Further, preferably, the reverse-connection protection circuit of described solar refrigerating device, is characterized in that, described isolated gate FET is N-type Metal-Oxide Semiconductor field-effect transistor.
After taking such scheme, compared with prior art, the utility model has the advantage of.
(1) contactless: adopt N-type Metal-Oxide Semiconductor field-effect transistor replace the contact switchs such as traditional relay effectively eliminate relay buy on behalf opening, sparking phenomenon of arc discharge when turning off, due to the firmware switching device that N-type Metal-Oxide Semiconductor field-effect transistor is sealing, it also avoid device contacts and to make moist the faults such as the loose contact that causes.
(2) noiselessness: the noise of the switch adopting N-type Metal-Oxide Semiconductor field-effect transistor to replace the contact switchs such as traditional relay effectively to eliminate relay opening, when turning off.
(3) volume is little, low in energy consumption.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in detail, to make above-mentioned advantage of the present utility model definitely.Wherein.
Fig. 1 is the structural representation of the reverse-connection protection circuit of the utility model solar refrigerating device.
Embodiment
Describe execution mode of the present utility model in detail below with reference to drawings and Examples, to the utility model, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the utility model and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection range of the present utility model.
A kind of reverse-connection protection circuit of solar refrigerating device, it is characterized in that, comprise: DC supply input inDC+, DC supply input inDC-, resistance R1, resistance R2, voltage stabilizing didoe D1, isolated gate FET Q1, output OUT+ and output OUT-, wherein resistance R1 one end is connected with output OUT+ with DC supply input inDC+, the other end of resistance R1 connects the grid of isolated gate FET Q1 and one end of resistance R2 and the negative pole end of voltage stabilizing didoe D1, the source electrode of isolated gate FET Q1 is connected with DC supply input inDC-, simultaneously, positive pole and the output OUT-of the drain electrode of isolated gate FET Q1 and the other end of resistance R2 and voltage stabilizing didoe D1 are connected.
Further, preferably, the reverse-connection protection circuit of described solar refrigerating device, is characterized in that, described isolated gate FET is N-type Metal-Oxide Semiconductor field-effect transistor.
After taking such scheme, compared with prior art, the utility model has the advantage of.
(1) contactless: adopt N-type Metal-Oxide Semiconductor field-effect transistor replace the contact switchs such as traditional relay effectively eliminate relay buy on behalf opening, sparking phenomenon of arc discharge when turning off, due to the firmware switching device that N-type Metal-Oxide Semiconductor field-effect transistor is sealing, it also avoid device contacts and to make moist the faults such as the loose contact that causes.
(2) noiselessness: the noise of the switch adopting N-type Metal-Oxide Semiconductor field-effect transistor to replace the contact switchs such as traditional relay effectively to eliminate relay opening, when turning off.
(3) volume is little, low in energy consumption.
Wherein, when input both positive and negative polarity is correct, isolated gate FET Q1 gate terminal produce have corresponding burning voltage, at this moment isolated gate FET Q1 source electrode and drain electrode between by UNICOM, can conduct electricity.
When input both positive and negative polarity connects inverse time, isolated gate FET Q1 gate terminal can not produce voltage, at this moment isolated gate FET Q1 source electrode and drain electrode between will insulate, cannot conduct electricity.Thus when input both positive and negative polarity connection error, a whole set of follow-up system can not operate thus play the effect of protection.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. the reverse-connection protection circuit of a solar refrigerating device, it is characterized in that, comprise: DC supply input inDC+, DC supply input inDC-, resistance R1, resistance R2, voltage stabilizing didoe D1, isolated gate FET Q1, output OUT+ and output OUT-, wherein resistance R1 one end is connected with output OUT+ with DC supply input inDC+, the other end of resistance R1 connects the grid of isolated gate FET Q1 and one end of resistance R2 and the negative pole end of voltage stabilizing didoe D1, the source electrode of isolated gate FET Q1 is connected with DC supply input inDC-, simultaneously, positive pole and the output OUT-of the drain electrode of isolated gate FET Q1 and the other end of resistance R2 and voltage stabilizing didoe D1 are connected.
2. the reverse-connection protection circuit of solar refrigerating device according to claim 1, is characterized in that, described isolated gate FET is N-type Metal-Oxide Semiconductor field-effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061852.1U CN204424895U (en) | 2015-01-29 | 2015-01-29 | A kind of reverse-connection protection circuit of solar refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061852.1U CN204424895U (en) | 2015-01-29 | 2015-01-29 | A kind of reverse-connection protection circuit of solar refrigerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204424895U true CN204424895U (en) | 2015-06-24 |
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ID=53475225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520061852.1U Expired - Fee Related CN204424895U (en) | 2015-01-29 | 2015-01-29 | A kind of reverse-connection protection circuit of solar refrigerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204424895U (en) |
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2015
- 2015-01-29 CN CN201520061852.1U patent/CN204424895U/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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151223 Address after: 518000, building six, building three, six Yang Yang Industrial Zone, Huang Tian community, Xixiang street, Shenzhen, Guangdong, Baoan District Patentee after: Shenzhen Phyllis Solar Energy Technology Co., Ltd. Address before: 510000, room 5, A1, West Avenue, Taihe Zhenlong, Guangzhou Baiyun District, Guangdong, China Patentee before: GUANGZHOU FELICITY SOLAR TECHNOLOGY CO., LTD. |
|
| 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: 20150624 Termination date: 20200129 |