CN204633323U - A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof - Google Patents
A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof Download PDFInfo
- Publication number
- CN204633323U CN204633323U CN201520266236.XU CN201520266236U CN204633323U CN 204633323 U CN204633323 U CN 204633323U CN 201520266236 U CN201520266236 U CN 201520266236U CN 204633323 U CN204633323 U CN 204633323U
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- China
- Prior art keywords
- fuse
- resistance
- lightning surge
- protective circuit
- piezo
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- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 title claims abstract description 29
- 238000013016 damping Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof, belong to electronic device field, this circuit comprises the first fuse, the second fuse, piezo-resistance; One end of first fuse is electrically connected with power firestreak; The other end of the first fuse is electrically connected with one end of the second fuse and one end of piezo-resistance; The other end of piezo-resistance is electrically connected with zero-power line; The other end of the second fuse and zero-power line are electrically connected with the input of next stage circuit; Owing to have employed the first fuse, the second fuse, piezo-resistance, reach reduce costs, simplified structure, object easy to maintenance.
Description
Technical field
The utility model belongs to electronic device field, particularly relates to a kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof.
Background technology
Along with popularizing of various domestic electronic appliances, Switching Power Supply application is more and more extensive, the requirement of market to Switching Power Supply is also more and more higher, regular tap power supply designs and does not reach market demands in lightning Protection, major part can only reach 1KV thunderbolt Distribution Test, some products just do not reach minimum 1KV requirement at all, the large portion of the Switching Power Supply that market is sold just is not come into the market by surge test, do not do anti-lightning surge effective protection measure, by to the investigation of marketing users with fact proved, as TV set-top box is powered, television set, the equipment such as DVD, under the severe multiple environment of regional thunder and lightning, season as multiple in Summer Lightning, high voltage surge enters electrical network, enter Switching Power Supply L, N holds, the damage of some Switching Power Supplies is caused not work, have influence on the use of family and industrial equipment, also cause certain hidden danger simultaneously, Chang Huixian causes power supply to damage, equipment is caused to work, life-span is short, the lifestyle device needs of industry-by-industry and the people cannot be met.
The protective circuit cost of existing anti-lightning surge is high, complex structure, inconvenient maintenance.
Utility model content
In view of this, the utility model provides a kind of protective circuit of anti-lightning surge, high with the protective circuit cost solving anti-lightning surge in the prior art, complex structure, the problem of inconvenient maintenance.
The utility model is achieved in that a kind of protective circuit of anti-lightning surge, comprises the first fuse, the second fuse, piezo-resistance; One end of described first fuse is electrically connected with power firestreak; The other end of described first fuse is electrically connected with one end of described second fuse and one end of described piezo-resistance; The other end of described piezo-resistance is electrically connected with zero-power line; The other end and the described zero-power line of described second fuse are electrically connected with the input of next stage circuit.
Further, also comprise the first damping resistance, described first damping resistance is in parallel with the wire between described first fuse and power firestreak and is connected.
Further, also comprise the second damping resistance, described first damping resistance is in parallel with the wire between described piezo-resistance and zero-power line and is connected.
The utility model additionally provides the Switching Power Supply of the protective circuit applying above-mentioned anti-lightning surge; comprise rectification module, main circuit conversion module, secondary commutation voltage reduction module, voltage detecting voltage stabilizing control module, Voltage Feedback control module, PWM control module; also comprise the protective circuit of above-mentioned anti-lightning surge, the next stage circuit of the protective circuit of described anti-lightning surge is described rectification module.
In the protective circuit of the anti-lightning surge provided at the utility model, owing to have employed the first fuse, the second fuse, piezo-resistance, reach reduce costs, simplified structure, object easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the protective circuit of the anti-lightning surge that the utility model provides.
Fig. 2 is the concrete enforcement schematic diagram of the Switching Power Supply of the protective circuit of the application described anti-lightning surge that the utility model provides.
Fig. 3 is the principle schematic of the Switching Power Supply of the protective circuit of the described anti-lightning surge of application that the utility model provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and the embodiments, the utility model is further elaborated.Should be appreciated that embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of protective circuit of anti-lightning surge, a kind of protective circuit of anti-lightning surge, comprises the first fuse, the second fuse, piezo-resistance; One end of described first fuse is electrically connected with power firestreak; The other end of described first fuse is electrically connected with one end of described second fuse and one end of described piezo-resistance; The other end of described piezo-resistance is electrically connected with zero-power line; The other end and the described zero-power line of described second fuse are electrically connected with the input of next stage circuit.
Owing to have employed the first fuse, the second fuse, piezo-resistance, reach reduce costs, simplified structure, object easy to maintenance.
Below in conjunction with embodiment, realization of the present utility model is described in detail.
As shown in Figure 1, Figure 2, Figure 3 shows, be the protective circuit of the schematic diagram of the protective circuit of the anti-lightning surge that the utility model provides, a kind of anti-lightning surge, comprise the first fuse F1, the second fuse F2, piezo-resistance MOV1; One end of first fuse F1 is electrically connected with power firestreak; The other end of the first fuse F1 is electrically connected with one end of the second fuse F2 and one end of piezo-resistance MOV1; The other end of piezo-resistance MOV1 is electrically connected with zero-power line; The other end and the zero-power line of the second fuse F2 are electrically connected with the input of next stage circuit; The less element of such employing just reaches the object of anti-lightning surge.
Further, also comprise the first damping resistance J1, the first damping resistance J1 is in parallel with the wire between the first fuse F1 and power firestreak and is connected; So just can spike vibration on damping live wire circuit.
Further, also comprise the second damping resistance J2, the first damping resistance J2 is in parallel with the wire between piezo-resistance MOV1 and zero-power line and is connected; So just can spike vibration on damping zero line circuit.
The utility model additionally provides the Switching Power Supply of the protective circuit applying above-mentioned anti-lightning surge, comprise rectification module, main circuit conversion module, secondary commutation voltage reduction module, voltage detecting voltage stabilizing control module, Voltage Feedback control module, PWM control module, also comprise the protective circuit of above-mentioned anti-lightning surge, the next stage circuit of the protective circuit of anti-lightning surge is rectification module; Circuit can be suppressed at increase thermistor or other after the protective circuit of anti-lightning surge, better to the inhibition of EMI (Electromagnetic Interference, electromagnetic interference) like this.
Operation principle of the present utility model: civil power input is through high strength anti lightning struck module, connect put late-class circuit rectification filtering module through the first fuse F1, the second fuse F2, piezo-resistance MOV1, main conversion module enters time rectification module, output voltage power supply to the device connects voltage detecting voltage stabilizing control module simultaneously, connect Voltage Feedback control module, control high frequency conversion module generation interchange conversion decompression through PWM control module to power, be supplied to various equipment and power.
In a word, owing to have employed the first fuse, the second fuse, piezo-resistance, reach reduce costs, simplified structure, object easy to maintenance.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a protective circuit for anti-lightning surge, is characterized in that: comprise the first fuse, the second fuse, piezo-resistance; One end of described first fuse is electrically connected with power firestreak; The other end of described first fuse is electrically connected with one end of described second fuse and one end of described piezo-resistance; The other end of described piezo-resistance is electrically connected with zero-power line; The other end and the described zero-power line of described second fuse are electrically connected with the input of next stage circuit.
2. the protective circuit of anti-lightning surge as claimed in claim 1, it is characterized in that: also comprise the first damping resistance, described first damping resistance is in parallel with the wire between described first fuse and power firestreak and is connected.
3. the protective circuit of anti-lightning surge as claimed in claim 1 or 2, it is characterized in that: also comprise the second damping resistance, described first damping resistance is in parallel with the wire between described piezo-resistance and zero-power line and is connected.
4. the Switching Power Supply of the protective circuit of anti-lightning surge described in application rights requirement 1 to 3 any one; comprise rectification module, main circuit conversion module, secondary commutation voltage reduction module, voltage detecting voltage stabilizing control module, Voltage Feedback control module, PWM control module; it is characterized in that: the protective circuit also comprising above-mentioned anti-lightning surge, the next stage circuit of the protective circuit of described anti-lightning surge is described rectification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266236.XU CN204633323U (en) | 2015-04-29 | 2015-04-29 | A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266236.XU CN204633323U (en) | 2015-04-29 | 2015-04-29 | A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633323U true CN204633323U (en) | 2015-09-09 |
Family
ID=54052316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520266236.XU Expired - Fee Related CN204633323U (en) | 2015-04-29 | 2015-04-29 | A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204633323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451350A (en) * | 2015-08-05 | 2017-02-22 | 惠州市忠邦电子有限公司 | Switching power supply protection circuit and device and switching power supply |
-
2015
- 2015-04-29 CN CN201520266236.XU patent/CN204633323U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451350A (en) * | 2015-08-05 | 2017-02-22 | 惠州市忠邦电子有限公司 | Switching power supply protection circuit and device and switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |