CN102611091A - Lightning stroke prevention surge test protection circuit for electronic equipment - Google Patents
Lightning stroke prevention surge test protection circuit for electronic equipment Download PDFInfo
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- CN102611091A CN102611091A CN2012100532288A CN201210053228A CN102611091A CN 102611091 A CN102611091 A CN 102611091A CN 2012100532288 A CN2012100532288 A CN 2012100532288A CN 201210053228 A CN201210053228 A CN 201210053228A CN 102611091 A CN102611091 A CN 102611091A
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Abstract
The invention discloses a lightning stroke prevention surge test protection circuit for electronic equipment. The protection circuit comprises piezoresistors R1, R2 and R3, inductance coils L1 and L2, a capacitor C1 and transient suppression diodes TVS1, TVS2 and TVS3. Under the guidance of an idea of a multi-stage protection circuit, the simple and practical protection circuit is designed by combining the time delay characteristic of a common mode filter; the protection circuit is simple and feasible and has relatively high cost performance and popularization value; and the development cost of the electronic equipment is reduced.
Description
Technical field
The present invention relates to the protective circuit of the anti-lightning surge test of a kind of electronic equipment.
Background technology
Along with the development of grid company, the environment of power equipment operation becomes increasingly complex, and electromagnetic environment is also day uncouth and fierce bad; Electronic equipment operates under the condition of big voltage, big electric current; The chip speed of service is more and more faster simultaneously, and integrated level is increasingly high, develops into present ultrahigh speed very lagre scale integrated circuit (VLSIC) by initial Small Scale Integration; The anti-overvoltage capabilities of chip descends, and anti-lightning surge ability is also along with decline.
Summary of the invention
The objective of the invention is electronic equipment is to overcome the problem that occurs in the lightning surge immunity experiment process, a kind of simple protective circuit is provided, and can significantly researches and develops the cost of electronic equipment, improves research and development speed etc.
Generally all can relate to the protective circuit of being made up of surge suppression device in the power supply input port of equipment, its basic thought is: be provided with on the line one-level (or) multilevel voltage amplitude limit link, the surge current of releasing, thus reach the purpose of protection.
The present invention suppresses diode from response time and interelectrode capacitance consideration according to piezo-resistance, transition, and the technical scheme of employing is following.The protective circuit of the anti-lightning surge test of a kind of electronic equipment comprises piezo-resistance R1-R3, and inductance coil L1, L2, capacitor C 1, transition suppress diode TVS1, TVS2, TVS3; Wherein: an end in power supply input L terminating resistor R1, loop, resistance R 2 series connection back, the end of connecting resistance R3 connects the end of inductance coil L1 then; One end of another termination capacitor C 1 of inductance coil L1; Connect transition and suppress the end that diode TVS2, transition suppress loop, diode TVS3 series connection back, connect the end that transition suppresses diode TVS1, the other end in power supply input N terminating resistor R1, loop, resistance R 2 series connection back; The other end of connecting resistance R3; An end that connects inductance coil L2 then, the other end of another termination capacitor C 1 of inductance coil L2 connects the other end that transition suppresses diode TVS2, loop, transition inhibition diode TVS3 series connection back; Connect the other end that transition suppresses diode TVS1; Get into the power input of electronic equipment at last, the connection termination the earth of resistance R 1, R2 wherein, transition suppresses the connection termination the earth that diode TVS2, transition suppress diode TVS3.Inductance coil L1, L2 are the common mode inductance coil, are enclosed within jointly on the ferrite bead.Piezo-resistance nominal varistor voltage value is 2-3 a times of electronic equipment input supply voltage value, is higher than transition and suppresses diode clamp voltage.Transition inhibition diode clamp voltage is 1.5-2 times of electronic equipment input supply voltage value.
Beneficial effect of the present invention is:
1, do not change the framework or the structure of electronic equipment main circuit;
2, improve the research and development speed of electronic equipment fast, make equipment pass through lightning surge immunity to interference speed as soon as possible;
3, significantly improve the antisurge interference performance of electronic equipment;
4, easy, feasible, the R&D costs of reduction electronic equipment have cost performance and promotional value preferably.
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 uses the protective circuit in the anti-lightning surge test of a kind of electronic equipment for the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is made further detailed description below in conjunction with accompanying drawing.
The present invention adopts 3 grades of protection to protect electronic equipment, and the first order is a piezo-resistance, and the second level is co-mode coil and electric capacity; The third level is that transition suppresses diode, and differential mode coil and electric capacity also can be added in the second level in actual application, is not mainly the common mode coupling through the lightning surge test but perplex electronic equipment at present; The now basic electronic equipment of differential mode coupling can both solve, thereby the second level of the present invention do not add the differential mode coupler, when surging signal gets into electronic equipment; At first utilize piezo-resistance protection; Utilize the common mode coupler that wave head voltage is produced certain delay then, 1 pair of supply voltage of capacitor C plays smoothing effect, make transition suppress diode voltage clamp in certain scope; Thereby protect electronic equipment better, concrete protective circuit is as shown in Figure 1.
When the anti-lightning surge of electronic equipment was tested, residual voltage was a significant consideration of design protection circuit, under the guidance of multi-stage protection circuit thought, in conjunction with the time-delay characteristics of common-mode filter, designs a kind of simple and practical protective circuit.
Claims (4)
1. the protective circuit of the anti-lightning surge test of an electronic equipment, it is characterized in that: protective circuit comprises piezo-resistance R1-R3, inductance coil L1, L2, capacitor C 1, transition suppress diode TVS1, TVS2, TVS3; Wherein: an end in power supply input L terminating resistor R1, loop, resistance R 2 series connection back, the end of connecting resistance R3 connects the end of inductance coil L1 then; One end of another termination capacitor C 1 of inductance coil L1; Connect transition and suppress the end that diode TVS2, transition suppress loop, diode TVS3 series connection back, connect the end that transition suppresses diode TVS1, the other end in power supply input N terminating resistor R1, loop, resistance R 2 series connection back; The other end of connecting resistance R3; An end that connects inductance coil L2 then, the other end of another termination capacitor C 1 of inductance coil L2 connects the other end that transition suppresses diode TVS2, loop, transition inhibition diode TVS3 series connection back; Connect the other end that transition suppresses diode TVS1; Get into the power input of electronic equipment at last, the connection termination the earth of resistance R 1, R2 wherein, transition suppresses the connection termination the earth that diode TVS2, transition suppress diode TVS3.
2. the protective circuit of the anti-lightning surge test of a kind of electronic equipment according to claim 1, it is characterized in that: inductance coil L1, L2 are the common mode inductance coil, are enclosed within jointly on the ferrite bead.
3. the protective circuit of the anti-lightning surge test of a kind of electronic equipment according to claim 1 is characterized in that piezo-resistance nominal varistor voltage value is higher than transition and suppresses diode clamp voltage.
4. the protective circuit of the anti-lightning surge test of a kind of electronic equipment according to claim 1 is characterized in that: transition inhibition diode clamp voltage is 1.5-2 times of electronic equipment input supply voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100532288A CN102611091A (en) | 2012-03-02 | 2012-03-02 | Lightning stroke prevention surge test protection circuit for electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100532288A CN102611091A (en) | 2012-03-02 | 2012-03-02 | Lightning stroke prevention surge test protection circuit for electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102611091A true CN102611091A (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100532288A Pending CN102611091A (en) | 2012-03-02 | 2012-03-02 | Lightning stroke prevention surge test protection circuit for electronic equipment |
Country Status (1)
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| CN (1) | CN102611091A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051174A (en) * | 2012-12-07 | 2013-04-17 | 国网智能电网研究院 | High position energy-taking power supply device of submodule of MMC valve and realizing method thereof |
| CN103078307A (en) * | 2013-01-27 | 2013-05-01 | 黄永捷 | Lightning-protected switch-signal indicating rectifier |
| CN104009455A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Electric transmission line monitoring system protecting device for lightning protection |
| CN104009456A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Lightning protection device for power transmission line monitoring system |
| CN104009460A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Lighting protection device for power transmission line monitoring system |
| CN104218561A (en) * | 2014-09-30 | 2014-12-17 | 成都思迈科技发展有限责任公司 | Multistage lightning protection circuit with delay circuit |
| CN104518504A (en) * | 2013-09-30 | 2015-04-15 | 深圳市海洋王照明工程有限公司 | Anti-surge circuit and LED lighting system |
| CN106093494A (en) * | 2016-08-22 | 2016-11-09 | 四方继保（武汉）软件有限公司 | A kind of signal for electronic mutual inductor protects filter circuit |
| CN106463954A (en) * | 2016-07-15 | 2017-02-22 | 广东欧珀移动通信有限公司 | Surge protection circuit and mobile terminal |
| CN106849628A (en) * | 2017-01-23 | 2017-06-13 | 中国人民解放军61489部队 | A kind of high-power electromagnetic pulse protection module for power line |
| CN107394769A (en) * | 2017-09-04 | 2017-11-24 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901183A (en) * | 1988-08-29 | 1990-02-13 | World Products, Inc. | Surge protection device |
| CN2321155Y (en) * | 1997-12-08 | 1999-05-26 | 栖霞市供电公司 | Lightening arrester for electronic equipment |
| CN201636674U (en) * | 2009-06-10 | 2010-11-17 | 黄爱国 | Lightning protection led street lamp |
| CN202009229U (en) * | 2011-04-08 | 2011-10-12 | 瑞斯康达科技发展股份有限公司 | Ethernet feed port group, anti-surge protection circuit and Ethernet feed equipment |
-
2012
- 2012-03-02 CN CN2012100532288A patent/CN102611091A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901183A (en) * | 1988-08-29 | 1990-02-13 | World Products, Inc. | Surge protection device |
| CN2321155Y (en) * | 1997-12-08 | 1999-05-26 | 栖霞市供电公司 | Lightening arrester for electronic equipment |
| CN201636674U (en) * | 2009-06-10 | 2010-11-17 | 黄爱国 | Lightning protection led street lamp |
| CN202009229U (en) * | 2011-04-08 | 2011-10-12 | 瑞斯康达科技发展股份有限公司 | Ethernet feed port group, anti-surge protection circuit and Ethernet feed equipment |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051174B (en) * | 2012-12-07 | 2015-01-07 | 国网智能电网研究院 | High position energy-taking power supply device of submodule of MMC valve and realizing method thereof |
| CN103051174A (en) * | 2012-12-07 | 2013-04-17 | 国网智能电网研究院 | High position energy-taking power supply device of submodule of MMC valve and realizing method thereof |
| CN103078307A (en) * | 2013-01-27 | 2013-05-01 | 黄永捷 | Lightning-protected switch-signal indicating rectifier |
| CN104518504A (en) * | 2013-09-30 | 2015-04-15 | 深圳市海洋王照明工程有限公司 | Anti-surge circuit and LED lighting system |
| CN104009456A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Lightning protection device for power transmission line monitoring system |
| CN104009460A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Lighting protection device for power transmission line monitoring system |
| CN104009455A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Electric transmission line monitoring system protecting device for lightning protection |
| CN104218561A (en) * | 2014-09-30 | 2014-12-17 | 成都思迈科技发展有限责任公司 | Multistage lightning protection circuit with delay circuit |
| CN106463954A (en) * | 2016-07-15 | 2017-02-22 | 广东欧珀移动通信有限公司 | Surge protection circuit and mobile terminal |
| CN106093494A (en) * | 2016-08-22 | 2016-11-09 | 四方继保（武汉）软件有限公司 | A kind of signal for electronic mutual inductor protects filter circuit |
| CN106849628A (en) * | 2017-01-23 | 2017-06-13 | 中国人民解放军61489部队 | A kind of high-power electromagnetic pulse protection module for power line |
| CN107394769A (en) * | 2017-09-04 | 2017-11-24 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
| CN107394769B (en) * | 2017-09-04 | 2019-06-04 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |