CN2466839Y - Power supply common mode and series mode noise filter specially adapted for household cinema - Google Patents
Power supply common mode and series mode noise filter specially adapted for household cinema Download PDFInfo
- Publication number
- CN2466839Y CN2466839Y CN 01204935 CN01204935U CN2466839Y CN 2466839 Y CN2466839 Y CN 2466839Y CN 01204935 CN01204935 CN 01204935 CN 01204935 U CN01204935 U CN 01204935U CN 2466839 Y CN2466839 Y CN 2466839Y
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- power supply
- common mode
- choke coil
- capacitor
- mode
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Abstract
The utility model relates to a common-mode and series-mode noise filter for the special power supply of a household cinema, which is composed of resistances, capacitances and an inductance. The utility model is characterized in that a resistance R1, a capacitance C1, a resistance R2 and a capacitance C5 are connected in parallel between a fire wire L and a zero wire N which are arranged at the back side of the regulated power supply, the fire wire between the capacitance C1 and the resistance R2 passes through a common-mode choke coil L1, and the zero wire passes through a common-mode choke coil L2; the fire wire between the capacitance C2 and the capacitance capacitor C5 passes through a common-mode choke coil L3, the zero wire passes through a common-mode choke coil L4, and the capacitances C3, C4 which are connected in series are bridged at an output end and then are connected with the ground after the voltage division. After the common-mode and series-mode filtering of the utility model, the pure power supply can be conveyed to a household sound image device.
Description
The utility model relates to power-supply filter, refers in particular to power supply specially for household cinema common mode series mode noise filter.
In the prior art, China Patent No. 93239725 (Granted publication CN2181114Y) name is called " three-phase alternating current source filter ", on center line, connect feed-through capacitor, with the electromagnetic interference bypass, reduce the electrical potential difference on the center line, common mode choke suppresses electromagnetic interference, and main purpose is noise and the interference that suppresses in the electronic equipment.But it is not suitable for particularly home theater of family's audio-visual equipments such as television set, VCD machine, video tape recorder, CD player, LD machine, DVD player, AV power amplifier.Raising along with living standards of the people, increasing family has home theater, but because the harmonic distortion of power supply,, directly influence the audio-visual effects of family's audio-visual equipment though most ofly adopt the secondary regulated power supply power supply and still exist noise and interference in family's audio-visual equipment.
The purpose of this utility model is to provide a kind of power supply specially for household cinema common mode series mode noise filter, can suppress noise and interference in family's audio-visual equipment effectively.
For achieving the above object, the solution that the utility model is taked (referring to the embodiment accompanying drawing) is: a kind of power supply specially for household cinema common mode series mode noise filter, by resistance, electric capacity and inductance are formed, be characterized in parallel resistance R1 between live wire L after the stabilized voltage power supply and zero line N, capacitor C 1, resistance R 2 and capacitor C 5, live wire between capacitor C 1 and the resistance R 2 is through common mode choke coil L1, zero line is through common mode choke coil L2, live wire between capacitor C 2 and the capacitor C 5 is through common mode choke coil L3, zero line is through common mode choke coil L4, capacitor C 3, be connected across output ground connection after dividing potential drop after the C4 series connection.
Capacitor C 1, C2, C5 are in order to the filtering series mode interference, and resistance R 1, R2 are in order to eliminate the electric charge accumulation, and capacitor C 3, C4 mainly suppress common mode disturbances.After the voltage after the voltage stabilizing is delivered to the utility model, carried out common mode and the filtering of string mould, just purer power supply can be delivered to family's audio-visual equipment.The utility model circuit is simple, but can suppress noise and interference and the interference between them thereof in the home theater audio-visual equipment effectively, makes audio-visual equipment not because of the distortion of power issue acoustic image.
Fig. 1 is the electrical schematic diagram of the utility model embodiment.
Claims (1)
1, a kind of power supply specially for household cinema common mode series mode noise filter, by resistance, electric capacity and inductance are formed, it is characterized in that: the live wire L after the stabilized voltage power supply ↓ and zero line N ↓ between parallel resistance R ↓ [1], capacitor C ↓ [1], resistance R ↓ [2] and capacitor C ↓ [5], live wire between capacitor C ↓ [1] and resistance R ↓ [2] is through common mode choke coil L ↓ [1], zero line is through common mode choke coil L ↓ [2], live wire between capacitor C ↓ [2] and capacitor C ↓ [5] is through common mode choke coil L ↓ [3], zero line is through common mode choke coil L ↓ [4], capacitor C ↓ [3], be connected across output ground connection after dividing potential drop after the series connection of C ↓ [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01204935 CN2466839Y (en) | 2001-02-03 | 2001-02-03 | Power supply common mode and series mode noise filter specially adapted for household cinema |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01204935 CN2466839Y (en) | 2001-02-03 | 2001-02-03 | Power supply common mode and series mode noise filter specially adapted for household cinema |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2466839Y true CN2466839Y (en) | 2001-12-19 |
Family
ID=33626040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01204935 Expired - Fee Related CN2466839Y (en) | 2001-02-03 | 2001-02-03 | Power supply common mode and series mode noise filter specially adapted for household cinema |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2466839Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429855C (en) * | 2005-09-12 | 2008-10-29 | 上海浩顺科技有限公司 | Power supply wave shape correcting filter |
| CN103701427A (en) * | 2013-12-31 | 2014-04-02 | 康海峰 | Filter at front end of outer part of household appliance for improving power spectral density of power line communication |
| CN105556838A (en) * | 2013-09-17 | 2016-05-04 | 三菱电机株式会社 | Noise filter |
| CN107134916A (en) * | 2017-06-15 | 2017-09-05 | 中国电子科技网络信息安全有限公司 | A kind of AC power conduction electromagnetic information leakage protector and method |
-
2001
- 2001-02-03 CN CN 01204935 patent/CN2466839Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429855C (en) * | 2005-09-12 | 2008-10-29 | 上海浩顺科技有限公司 | Power supply wave shape correcting filter |
| CN105556838A (en) * | 2013-09-17 | 2016-05-04 | 三菱电机株式会社 | Noise filter |
| US10263589B2 (en) | 2013-09-17 | 2019-04-16 | Mitsubishi Electric Corporation | Noise filter |
| CN103701427A (en) * | 2013-12-31 | 2014-04-02 | 康海峰 | Filter at front end of outer part of household appliance for improving power spectral density of power line communication |
| CN103701427B (en) * | 2013-12-31 | 2016-11-16 | 康海峰 | For improving the household electrical appliance external front end filter of Homeplug power spectral density |
| CN107134916A (en) * | 2017-06-15 | 2017-09-05 | 中国电子科技网络信息安全有限公司 | A kind of AC power conduction electromagnetic information leakage protector and method |
| CN107134916B (en) * | 2017-06-15 | 2020-01-10 | 中国电子科技网络信息安全有限公司 | Device and method for preventing electromagnetic information leakage in alternating-current power supply transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |