CN201490718U - Anti-interference circuit for protecting power network and electric appliance - Google Patents
Anti-interference circuit for protecting power network and electric appliance Download PDFInfo
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- CN201490718U CN201490718U CN2009201927353U CN200920192735U CN201490718U CN 201490718 U CN201490718 U CN 201490718U CN 2009201927353 U CN2009201927353 U CN 2009201927353U CN 200920192735 U CN200920192735 U CN 200920192735U CN 201490718 U CN201490718 U CN 201490718U
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- capacitor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
An anti-interference circuit for protecting power network and electric appliances is characterized in that a negative terminal of an AC (alternating current) input end is connected in series with an inductor L1; a compression capacitor C1 and a resistor Rp are connected in parallel between the other end of the inductor L1 and a positive terminal of the AC input end; inductors L2 are respectively connected in series with two ends of the compression capacitor C1 and the resistor Rp which are connected in parallel; a capacitor C2 and a capacitor C5 connected in parallel, and a capacitor C3 and a capacitor C4 connected in series are arranged between the other ends of the two inductors L2, and the common terminal of the capacitor C3 and the capacitor C4 is earthed; and the negative terminal for AC output AC through an inductor L3. The anti-interference circuit can effectively inhibit common mode interference signals and differential mode interference signals, and realize the bidirectional protection of power network and electric appliances.
Description
(1) technical field
The utility model relates to a kind of anti-jamming circuit, particularly relates to the anti-jamming circuit of a kind of bidirectional protective electrical network and electrical equipment.
(2) background technology
The high-frequency interferencing signal that is present in the electrical network can produce certain interference to electrical equipment, influences its operate as normal.Also can produce certain high-frequency interferencing signal during electrical equipment work itself, can pass to whole electrical network, so that can influence the operate as normal of all electrical equipment of whole electrical network by lead.
(3) summary of the invention
In order to overcome the deficiency of above-mentioned technical problem, the utility model provides the anti-jamming circuit of a kind of energy bidirectional protective electrical network and electrical equipment.
The technical scheme in the invention for solving the technical problem is:
A kind of anti-jamming circuit of protecting electrical network and electrical equipment, the negative terminal of the ac input end inductance L 1 that is connected in series, be connected in parallel to pressure-sensitive capacitance C1 and resistance R p between the other end of inductance L 1 and the anode of input, pressure-sensitive capacitance C1 that is connected in parallel and the two ends of resistance R p are connected in series with inductance L 2 respectively, the capacitor C 3 and the capacitor C 4 that be connected in parallel to a capacitor C 2, a capacitor C 5 between the other end of two inductance L 2 respectively, are connected in series, and the common end grounding of capacitor C 3 and capacitor C 4; The negative terminal that exchanges output is by an inductance L 3 outputs.
Inductance L 2 is the common mode interference signal inductance filter, and the differential mode interference signal is also had certain filter action.C3, C4 are Y safety electric capacity, are connected between incoming line and the ground wire, are used for eliminating common mode disturbances, and C1, C2 are X safety electric capacity, are connected the positive and negative two ends of incoming line, are used for eliminating differential mode interference.
The beneficial effects of the utility model are: the utility model can effectively suppress common mode interference signal and differential mode interference signal, realizes bidirectional protective electrical network and electrical equipment.
(4) description of drawings
Fig. 1 is an electrical block diagram of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1; a kind of anti-jamming circuit of protecting electrical network and electrical equipment; the negative terminal of the ac input end inductance L 1 that is connected in series; be connected in parallel to pressure-sensitive capacitance C1 and resistance R p between the other end of inductance L 1 and the anode of input; pressure-sensitive capacitance C1 that is connected in parallel and the two ends of resistance R p are connected in series with inductance L 2 respectively; the capacitor C 3 and the capacitor C 4 that be connected in parallel to a capacitor C 2, a capacitor C 5 between the other end of two inductance L 2 respectively, are connected in series; and the common end grounding of capacitor C 3 and capacitor C 4, the negative terminal that exchanges output is by an inductance L 3 outputs.
Inductance L 2 is the common mode interference signal inductance filter, and the differential mode interference signal is also had certain filter action.C3, C4 are Y safety electric capacity, are connected between incoming line and the ground wire, are used for eliminating common mode disturbances, and C1, C2 are X safety electric capacity, are connected the positive and negative two ends of incoming line, are used for eliminating differential mode interference.
Claims (1)
1. anti-jamming circuit of protecting electrical network and electrical equipment, it is characterized in that: the negative terminal of the ac input end inductance L 1 that is connected in series, be connected in parallel to pressure-sensitive capacitance C1 and resistance R p between the other end of inductance L 1 and the anode of input, pressure-sensitive capacitance C1 that is connected in parallel and the two ends of resistance R p are connected in series with inductance L 2 respectively, the capacitor C 3 and the capacitor C 4 that be connected in parallel to a capacitor C 2, a capacitor C 5 between the other end of two inductance L 2 respectively, are connected in series, and the common end grounding of capacitor C 3 and capacitor C 4; The negative terminal that exchanges output is by an inductance L 3 outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201927353U CN201490718U (en) | 2009-08-19 | 2009-08-19 | Anti-interference circuit for protecting power network and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201927353U CN201490718U (en) | 2009-08-19 | 2009-08-19 | Anti-interference circuit for protecting power network and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490718U true CN201490718U (en) | 2010-05-26 |
Family
ID=42429585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201927353U Expired - Fee Related CN201490718U (en) | 2009-08-19 | 2009-08-19 | Anti-interference circuit for protecting power network and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490718U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533153A (en) * | 2015-09-15 | 2017-03-22 | 广东美的生活电器制造有限公司 | Electromagnetic interference suppressing circuit of motor power and household electrical appliance |
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN108309280A (en) * | 2018-02-11 | 2018-07-24 | 许少辉 | The signal intensifier circuit of electrocardiograph |
| CN110429832A (en) * | 2019-08-06 | 2019-11-08 | 深圳创维－Rgb电子有限公司 | A kind of switching power circuit and television set |
-
2009
- 2009-08-19 CN CN2009201927353U patent/CN201490718U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533153A (en) * | 2015-09-15 | 2017-03-22 | 广东美的生活电器制造有限公司 | Electromagnetic interference suppressing circuit of motor power and household electrical appliance |
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN107204704B (en) * | 2016-03-18 | 2020-12-22 | 广东美的生活电器制造有限公司 | Mixer and be used for electromagnetic interference suppression circuit of mixer |
| CN108309280A (en) * | 2018-02-11 | 2018-07-24 | 许少辉 | The signal intensifier circuit of electrocardiograph |
| CN110429832A (en) * | 2019-08-06 | 2019-11-08 | 深圳创维－Rgb电子有限公司 | A kind of switching power circuit and television set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130819 |