CN204967612U - Electromagnetic interference resistance's power supply circuit - Google Patents
Electromagnetic interference resistance's power supply circuit Download PDFInfo
- Publication number
- CN204967612U CN204967612U CN201520578294.6U CN201520578294U CN204967612U CN 204967612 U CN204967612 U CN 204967612U CN 201520578294 U CN201520578294 U CN 201520578294U CN 204967612 U CN204967612 U CN 204967612U
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- Prior art keywords
- inductance
- emergency power
- power supply
- electromagnetic interference
- electric capacity
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of power electronics and specifically relates to an electromagnetic interference resistance's power supply circuit, advise electric capacity, piezo -resistor and emergency power source including inductance, fuse, ann, compared with the prior art, the utility model, having designed the combinatorial circuit who prevents surge snubber circuit, common mode filter ware and poor mode filter, having prevented that the surge that surge snubber circuit is arranged in absorbing the electric wire netting disturbs, the protection emergency power source do not damaged. The common mode filter ware uses with poor mode filter's combination, can fully absorb the electromagnetic interference who produces among electric wire netting and the emergency power source, has protected emergency power source effectively and rather than continuous electronic equipment's normal work.
Description
Technical field
The utility model relates to electric and electronic technical field, specifically a kind of power circuit of anti-electromagnetic interference.
Background technology
A lot of country and region alliance all require that the product entering its market must meet corresponding EMC standard at present, and by its certification.The FCC certification of the such as U.S., the VCCI certification of Japan, the CE certification of European Union, and the various certification such as the 3C certification of China's Mainland.
EMC and electromagnetic compatibility, its function be control and eliminate electromagnetic interference, make electronic equipment or system and other equipment link together work time, can not cause equipment or system service behaviour worsen or damage situation.
In order to make existing product meet EMC standard, needing to design and a kind ofly can absorb electromagnetic interference and the power circuit protecting that emergency power supply and coupled electronic equipment normally work.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind ofly can absorb electromagnetic interference and the power circuit protecting that emergency power supply and coupled electronic equipment normally work.
In order to achieve the above object, the utility model is a kind of power circuit of anti-electromagnetic interference, comprise inductance, fuse, safety electric capacity, piezo-resistance and emergency power supply, it is characterized in that: after civil power live wire end inline fuse, two tunnels are divided to be connected with the input of inductance one and one end of piezo-resistance respectively, the other end of piezo-resistance divides two-way to be connected with another input of civil power zero line side and inductance one respectively, the output of inductance one is connected with the input of inductance two, the output of inductance two divides two tunnels to be connected with one end of safety electric capacity one and the input of emergency power supply respectively, another output of inductance one is connected with another input of inductance two, another output of inductance two divide three tunnels respectively with the other end of safety electric capacity one, one end of safety electric capacity two and one end of inductance three connect, the other end of inductance three is connected with another input of emergency power supply, the other end ground connection of safety electric capacity two.
The model of described emergency power supply is LB-ELPD150-R0.
The utility model compared with the existing technology, devises the combinational circuit of Anti-surging absorbing circuit, common-mode filter and differential mode filter, and Anti-surging absorbing circuit is for absorbing the surge interference in electrical network, and protection emergency power supply is not damaged.Combinationally using of common-mode filter and differential mode filter, can fully absorb the electromagnetic interference produced in electrical network and emergency power supply, effectively protect the normal work of emergency power supply and coupled electronic equipment.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Now by reference to the accompanying drawings the utility model is described further.
See Fig. 1, the utility model is a kind of power circuit of anti-electromagnetic interference, comprise inductance, fuse, safety electric capacity, piezo-resistance and emergency power supply, after civil power live wire end L inline fuse F1, two tunnels are divided to be connected with the input of inductance one L1 and one end of piezo-resistance URT1 respectively, the other end of piezo-resistance URT1 divides two-way to be connected with another input of civil power zero line side N and inductance one L1 respectively, the output of inductance one L1 is connected with the input of inductance two L2, the output of inductance two L2 divides two tunnels to be connected with one end of safety electric capacity one C1 and the input IN1 of emergency power supply respectively, another output of inductance one L1 is connected with another input of inductance two L2, another output of inductance two L2 divide three tunnels respectively with the other end of safety electric capacity one C1, one end of safety electric capacity two C2 and one end of inductance three L3 connect, the other end of inductance three L3 is connected with another input IN2 of emergency power supply, the other end ground connection of safety electric capacity two C2.
The model of emergency power supply is LB-ELPD150-R0.
Operationally, inductance one L1, inductance two L2 and safety electric capacity one C1, safety electric capacity two C2 form common-mode filter, filtering common mode electromagnetic interference signal to the utility model.Inductance three L3 and safety electric capacity one C1 forms differential mode filter, filtering differential mode electromagnetic interference signal.Fuse F1 and piezo-resistance URT1 forms Anti-surging absorbing circuit, and for absorbing the surge interference in electrical network, protection emergency power supply is not damaged.Combinationally using of common-mode filter and differential mode filter, can fully absorb the electromagnetic interference produced in electrical network and emergency power supply, effectively protect the normal work of the coupled electronic equipment of emergency power supply.
Claims (2)
1. the power circuit of an anti-electromagnetic interference, comprise inductance, fuse, safety electric capacity, piezo-resistance and emergency power supply, it is characterized in that: after civil power live wire end (L) inline fuse (F1), two tunnels are divided to be connected with the input of inductance one (L1) and one end of piezo-resistance (URT1) respectively, the other end of piezo-resistance (URT1) divides two-way to be connected with another input of civil power zero line side (N) and inductance one (L1) respectively, the output of inductance one (L1) is connected with the input of inductance two (L2), the output of inductance two (L2) divides two tunnels to be connected with one end of safety electric capacity one (C1) and the input (IN1) of emergency power supply respectively, another output of inductance one (L1) is connected with another input of inductance two (L2), another output of inductance two (L2) divide three tunnels respectively with the other end of safety electric capacity one (C1), one end of safety electric capacity two (C2) and one end of inductance three (L3) connect, the other end of inductance three (L3) is connected with another input (IN2) of emergency power supply, the other end ground connection of safety electric capacity two (C2).
2. the power circuit of a kind of anti-electromagnetic interference according to claim 1, is characterized in that: the model of described emergency power supply is LB-ELPD150-R0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578294.6U CN204967612U (en) | 2015-08-04 | 2015-08-04 | Electromagnetic interference resistance's power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578294.6U CN204967612U (en) | 2015-08-04 | 2015-08-04 | Electromagnetic interference resistance's power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967612U true CN204967612U (en) | 2016-01-13 |
Family
ID=55062652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520578294.6U Expired - Fee Related CN204967612U (en) | 2015-08-04 | 2015-08-04 | Electromagnetic interference resistance's power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967612U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899013A (en) * | 2017-03-13 | 2017-06-27 | 成都秉德科技有限公司 | A kind of surge protective device suitable for outdoor communication line |
| CN107579719A (en) * | 2017-08-23 | 2018-01-12 | 成都天奥技术发展有限公司 | Fast parameter matches power-supply filter assembly |
| CN107676751A (en) * | 2017-09-26 | 2018-02-09 | 研奥电气股份有限公司深圳研发中心 | A kind of light-control knob used on track train |
-
2015
- 2015-08-04 CN CN201520578294.6U patent/CN204967612U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899013A (en) * | 2017-03-13 | 2017-06-27 | 成都秉德科技有限公司 | A kind of surge protective device suitable for outdoor communication line |
| CN107579719A (en) * | 2017-08-23 | 2018-01-12 | 成都天奥技术发展有限公司 | Fast parameter matches power-supply filter assembly |
| CN107579719B (en) * | 2017-08-23 | 2020-08-11 | 成都天奥技术发展有限公司 | Fast parameter matching power filter assembly |
| CN107676751A (en) * | 2017-09-26 | 2018-02-09 | 研奥电气股份有限公司深圳研发中心 | A kind of light-control knob used on track train |
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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: 20160113 Termination date: 20180804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |