CN201523135U - socket with electromagnetic interference suppression - Google Patents
socket with electromagnetic interference suppression Download PDFInfo
- Publication number
- CN201523135U CN201523135U CN2009203100773U CN200920310077U CN201523135U CN 201523135 U CN201523135 U CN 201523135U CN 2009203100773 U CN2009203100773 U CN 2009203100773U CN 200920310077 U CN200920310077 U CN 200920310077U CN 201523135 U CN201523135 U CN 201523135U
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- electromagnetic interference
- common mode
- electric capacity
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- mode inductance
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Abstract
The utility model relates to a socket with electromagnetic interference suppression, which comprises an outer casing, a power source connector and a power source jack, an electromagnetic interference suppression filter is in series connection between the power source connector and the power source jack, a common mode inductor is disposed inside the electromagnetic interference suppression filter, an input end and an output end of the common code inductor are respectively connected to an X capacitor, and the X capacitor of the output end is in parallel connection with a series circuit formed by two Y capacitors. Through the electromagnetic interference suppression filter, the socket can restrain interference of geomagnetism produced by electronic devices to current devices, thereby leading the current devices to be used normally and improving suppression effect.
Description
Technical field
The utility model relates to a kind of socket, especially a kind of socket with electromagnetic interference inhibit feature.
Background technology
Electronic equipment such as television set, video disc player itself can produce electromagnetic radiation, when using, if the next door has the people to use the household electrical appliance of hair dryer or battery powered shaver and so on, television sets etc. will be subjected to electromagnetic interference, such as the snowflake striped that it is to occur on the television screen tired sense, electric rice cooker boils not yet done rice, the air conditioner of obviously having closed, but initiate self after a while.Even more serious is, if when electromagnetic interference signal has hindered the aircraft that monitors the medical treatment electronic equipment of the state of an illness or flying, then can cause hardly imaginable consequence.
Electromagnetic Compatibility is meant that the operation that meets the requirements of equipment or system does not produce the ability of intolerable electromagnetic interference to any equipment in its environment in its electromagnetic environment.Therefore, EMC comprises the requirement of two aspects: the equipment that is meant on the one hand can not surpass certain limit value to the electromagnetic interference that the place environment produces in normal course of operation; The equipment that is meant on the other hand has to a certain degree immunity to interference, i.e. electromagnetic susceptibility to the electromagnetic interference that exists in the environment of place.Current because this respect more and more is subjected to the attention of International Electrotechnical Commission, the electrical equipment of air exercise safety certification (CE, CCC, CQC, GS, UL, VDE or the like) all has corresponding standard.The electromagnetic interference that requires electrical equipment to produce is no more than certain value, anti-interferencely also will reach certain requirement.But electromagnetism bath sound pollution is ubiquitous.As long as there is the place of electrical equipment that electromagnetic interference, particularly mobile radio telephone are all arranged, blower fan, water pump, compressor, motor, the hydraulic turbine, generator, turbine or the like all are main interference sources.
Patent Office of the People's Republic of China discloses a CN101510650A document on August 19th, 2009, name is called a kind of anti-ground magnetic disturbance/electromagnetic pulse socket.Comprise contact, butt end shell, ground plate, tail end shell, pedestal, interfacial seal pad, sealing ring, contact passes described ground plate, pedestal and interfacial seal pad and sealing ring is fixed in tail end shell and the butt end shell, between described contact and ground plate, be parallel with Transient Voltage Suppressor by the PCB circuit board, be provided with low pass filter and grounding reed between tail end shell and the contact, electrode contacts with contact in the described low pass filter, external electrode makes low pass filter be connected with external electrical by grounding reed and tail end housing contacts.This kind socket more complicated, inner parts often cause assembling cumbersome, and the failure rate that produces during use may improve, and whole cost can improve.
Summary of the invention
The utility model has solved internal structure complexity in the prior art, and parts often cause the assembling trouble easily, and the shortcoming that failure rate improves provides a kind of simple in structure, easy to assembly, the socket with electromagnetic interference inhibition easy to use.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of socket with electromagnetic interference inhibition, comprise shell, power connection and supply hub, wherein, be in series with the electromagnetic interference rejects trap between power connection and the supply hub, described electromagnetic interference rejects trap inside has a common mode inductance, common mode inductance input and output are connected to X electric capacity respectively, and wherein the X electric capacity of output is parallel with the series circuit that two Y electric capacity are formed.Its damping capacity to noise of Da ， The is strong more more for inductance, capacitance, and can reach it, and corner frequency is low more, and is good more to the inhibition effect of low-frequency noise, but relatively must pay the cost of cost, volume increase; By material behavior as can be known, when the value of inductance, electric capacity was big more, the self-resonant frequency of element impedance characteristic was low more, and the frequency range of sustainable attenuate acoustic noise narrows down relatively, so its value can not unrestrictedly increase; It is inhibited that common mode inductance will present big inductance for common-mode signal, works hardly and present very little leakage inductance for difference mode signal.
As preferably, the inside of common mode inductance is magnetic core with the ferrite, is wound with to the ferrite external symmetry two coils measure-alike, that the number of turn is identical, and common mode inductance has four terminals.Magnetic flux mutual superposition when flowing through common mode current in the magnet ring, thus sizable inductance value had, common mode current is played inhibitory action, and when two coils flow through differential-mode current, magnetic flux in the magnet ring is cancelled out each other, and does not almost have inductance value, so differential-mode current can be passed through undampedly.Therefore common mode inductance can suppress common mode interference signal effectively in balanced circuit, and the difference mode signal of circuit normal transmission is not had influence.
As preferably, two terminals of common mode inductance input connect the L line input and the N line input of power line respectively, two terminals of common mode inductance output connect the L line output terminal and the N line output terminal of power line respectively, L line input and L line output terminal connect same coil, and N line input and N line output terminal connect same coil.
As preferably, the two ends of the X electric capacity of common mode inductance input connect L line input and N line input respectively, and the two ends of the X electric capacity of common mode inductance output connect L line output terminal and N line output terminal respectively.
The specification of X electric capacity is 470nF/275V, and the specification of Y electric capacity is 2.2nF.Consider that capacitance comes for a short time to the rate of change of volume than inductance value, and commercially available capacitor all there is fixing appearance value, lacks flexibility, so when the component value of decision common mode and differential mode filter, under the safety limiting permission, select bigger appearance value for use as far as possible.
As preferably, the X electric capacity of common mode inductance input is parallel with bleeder resistance, series connection position ground connection in the middle of the Y electric capacity of common mode inductance output.Bleeder resistance charges to X electric capacity and Y electric capacity and releases.
Shell is provided with a switch, and switch is connected on the output of power connection.
The beneficial effects of the utility model are: by the electromagnetic interference rejects trap, can suppress of the interference of the earth magnetism of electric equipment generation to current device, thereby make current device normally to use, the common mode inductance of electromagnetic interference rejects trap inside and X electric capacity, Y electric capacity can improve the damping capacity to noise, improve the effect that suppresses.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is the circuit theory diagrams of a kind of electromagnetic interference rejects trap of the utility model;
Among the figure: 1, power connection, 2, connecting line, 3, shell, 4, switch, 5, the electromagnetic interference rejects trap, 6, supply hub, 7, bleeder resistance, 8, X electric capacity, 9, common mode inductance, 10, Y electric capacity, 11, hook.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of socket (referring to accompanying drawing 1) with electromagnetic interference inhibition, comprise power connection 1 and shell 3, be connected with connecting line 2 between power connection 1 and the shell 3, begin to be disposed with switch 4 from connecting line 2 one ends in the shell 3, electromagnetic interference rejects trap 5 and 3 supply hubs 6, electromagnetic interference rejects trap 5 inside are provided with a ferrite as magnetic core, ferrite be wound with outward two measure-alike, the coil that the number of turn is identical, the coiling and form four terminals symmetrically of two coils, wherein two is input, two other is an output, two inputs connect the L line input and the N line input of power line respectively, two outputs connect the L line output terminal and the N line output terminal of power line respectively, L line input is connected same coil with the L line output terminal, N line input is connected same coil with the N line output terminal, be connected with the X electric capacity 8 of 470nF/275V specification between L line input and the N line input, the X electric capacity 8 of input end is parallel with the series circuit that two bleeder resistances 7 are formed, be connected with the X electric capacity 8 of 470nF/275V specification between L line output terminal and the N line output terminal, the series circuit that the Y electric capacity 10 that it is 2.2nF that the X electric capacity of output is parallel with two specifications is formed, be connected with an earth connection on the circuit of two Y capacitances in series, the end away from connecting line on the shell is provided with hook 11.
Power connection 1 is inserted on the socket, the plug of connecting circuit on the supply hub 6, open switch, electrical equipment is powered, power supply is earlier through electromagnetic interference rejects trap 5, electric capacity in the electromagnetic interference rejects trap and the common mode inductance of being made up of ferrite and coil have suppressed electromagnetic interference, make that electromagnetic interference can be to electrical equipment generation effect, thereby have solved the electromagnetic interference between the electrical equipment.
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (7)
1. one kind has the socket that electromagnetic interference suppresses, comprise shell, power connection and supply hub, it is characterized in that being in series with between power connection and the supply hub electromagnetic interference rejects trap, described electromagnetic interference rejects trap inside has a common mode inductance, common mode inductance input and output are connected to X electric capacity respectively, and wherein the X electric capacity of output is parallel with the series circuit that two Y electric capacity are formed.
2. the socket with electromagnetic interference inhibition according to claim 1, the inside that it is characterized in that described common mode inductance is magnetic core with the ferrite, be wound with to the ferrite external symmetry two coils measure-alike, that the number of turn is identical, common mode inductance has four terminals.
3. the socket with electromagnetic interference inhibition according to claim 2, it is characterized in that two terminals of common mode inductance input connect the L line input and the N line input of power line respectively, two terminals of common mode inductance output connect the L line output terminal and the N line output terminal of power line respectively, L line input and L line output terminal connect same coil, and N line input and N line output terminal connect same coil.
4. according to claim 1 or 3 described sockets with electromagnetic interference inhibition, the two ends that it is characterized in that the X electric capacity of common mode inductance input connect L line input and N line input respectively, and the two ends of the X electric capacity of common mode inductance output connect L line output terminal and N line output terminal respectively.
5. the socket with electromagnetic interference inhibition according to claim 1, the specification that it is characterized in that X electric capacity is 470nF/275V, the specification of Y electric capacity is 2.2nF.
6. according to claim 1 or 2 or 3 or 5 described sockets, it is characterized in that the X electric capacity of common mode inductance input is parallel with bleeder resistance, series connection position ground connection in the middle of the Y electric capacity of common mode inductance output with electromagnetic interference inhibition.
7. according to claim 1 or 2 or 3 or 5 described sockets with electromagnetic interference inhibition, it is characterized in that described shell is provided with a switch, switch is connected on the output of power connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203100773U CN201523135U (en) | 2009-09-10 | 2009-09-10 | socket with electromagnetic interference suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203100773U CN201523135U (en) | 2009-09-10 | 2009-09-10 | socket with electromagnetic interference suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201523135U true CN201523135U (en) | 2010-07-07 |
Family
ID=42509311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203100773U Expired - Fee Related CN201523135U (en) | 2009-09-10 | 2009-09-10 | socket with electromagnetic interference suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201523135U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509971A (en) * | 2011-10-28 | 2012-06-20 | 中国人民解放军总参谋部第五十五研究所 | Broadband carrier-leak-proof safety power supply socket |
| CN103647193A (en) * | 2013-12-17 | 2014-03-19 | 北京东方计量测试研究所 | Anti-interference energy saving socket |
| CN104052251A (en) * | 2013-03-13 | 2014-09-17 | 雅达电子国际有限公司 | Power Supply Systems With Filters |
| CN104135142A (en) * | 2014-07-29 | 2014-11-05 | 中国东方电气集团有限公司 | Filter circuit of an asynchronous motor drive controller of an electric vehicle and method thereof |
| CN105896187A (en) * | 2016-06-13 | 2016-08-24 | 西安工程大学 | Safety socket with function of electromagnetic leakage prevention |
| CN110474617A (en) * | 2019-08-14 | 2019-11-19 | 天华通信科技有限公司 | The filter of the filtering characteristic of common-mode filter is improved using ESD protection device |
-
2009
- 2009-09-10 CN CN2009203100773U patent/CN201523135U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509971A (en) * | 2011-10-28 | 2012-06-20 | 中国人民解放军总参谋部第五十五研究所 | Broadband carrier-leak-proof safety power supply socket |
| CN102509971B (en) * | 2011-10-28 | 2015-04-15 | 中国人民解放军总参谋部第五十五研究所 | Broadband carrier-leak-proof safety power supply socket |
| CN104052251A (en) * | 2013-03-13 | 2014-09-17 | 雅达电子国际有限公司 | Power Supply Systems With Filters |
| CN104052251B (en) * | 2013-03-13 | 2018-04-06 | 雅达电子国际有限公司 | Power-supply system with wave filter |
| CN103647193A (en) * | 2013-12-17 | 2014-03-19 | 北京东方计量测试研究所 | Anti-interference energy saving socket |
| CN103647193B (en) * | 2013-12-17 | 2016-08-17 | 北京东方计量测试研究所 | A kind of anti-interference energy-saving socket |
| CN104135142A (en) * | 2014-07-29 | 2014-11-05 | 中国东方电气集团有限公司 | Filter circuit of an asynchronous motor drive controller of an electric vehicle and method thereof |
| CN105896187A (en) * | 2016-06-13 | 2016-08-24 | 西安工程大学 | Safety socket with function of electromagnetic leakage prevention |
| CN110474617A (en) * | 2019-08-14 | 2019-11-19 | 天华通信科技有限公司 | The filter of the filtering characteristic of common-mode filter is improved using ESD protection device |
| CN110474617B (en) * | 2019-08-14 | 2024-01-05 | 天华通信科技有限公司 | Filter for improving filter characteristic of common mode filter by ESD protection element |
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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: 20100707 Termination date: 20130910 |