CN202737264U - Anti-electromagnetic-interference socket - Google Patents
Anti-electromagnetic-interference socket Download PDFInfo
- Publication number
- CN202737264U CN202737264U CN 201220120474 CN201220120474U CN202737264U CN 202737264 U CN202737264 U CN 202737264U CN 201220120474 CN201220120474 CN 201220120474 CN 201220120474 U CN201220120474 U CN 201220120474U CN 202737264 U CN202737264 U CN 202737264U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- socket
- resistance
- switch
- common mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Filters And Equalizers (AREA)
Abstract
The utility model relates to an anti-electromagnetic-interference socket, which comprises a socket housing, a supply hub, a switch and a plug power line. The plug power line is located on the end part of the socket housing. The switch is located on the central part of the socket housing. The anti-electromagnetic-interference socket further comprises a filter circuit main board which is fixed between the switch and the supply hub and electrically connected with the switch and the supply hub. The socket provided in the utility model has power supply filtering effects and electromagnetic interference preventing effects. By means of the socket provided in the utility model, the electromagnetic interference of an electric appliance which is in use can be reduced to the minimum.
Description
Technical field
The utility model relates to a kind of socket, is specifically related to a kind of anti-electromagnetic interference socket.
Background technology
When we see TV, if the next door has the people to use the household electrical appliance of hair dryer or battery powered shaver and so on, the snowflake striped that it is can occur on the screen tired sense.Electric rice cooker boils not yet done rice, the air conditioner of obviously having closed, but initiate self after a while ... these all are the common electromagnetic interference phenomenons that arrives.More seriously, 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.
Electro Magnetic Compatibility (EMC) refers to that the operation that meets the requirements of equipment or system does not produce the ability of electromagnetic interference to any equipment in its environment in its electromagnetic environment.Therefore, Electro Magnetic Compatibility (EMC) comprises the requirement of two aspects: the equipment that refers on the one hand can not surpass certain limit value to the electromagnetic interference that the place environment produces in normal course of operation; Refer to that on the other hand utensil 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 subject to the attention of International Electrotechnical Commission, the electrical equipment of air exercise safety certification (CE, CCC, CQC, GS, UL, VDE etc.) 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 is arranged, mobile radio telephone particularly, blower fan, water pump, compressor, motor, the hydraulic turbine, generator, turbine etc. all are main interference sources.
The utility model content
The purpose of this utility model provides a kind of anti-electromagnetic interference socket, namely examining filter is will be inserted on the socket to power to each electrical equipment, big power electromagnetic compatible (EMC) filter is installed in socket inside, so just isolated the generation of electromagnetic interference from the source, with effective reduction electromagnetic interference, and has the power filter effect.
In order to achieve the above object, the utility model has following technical scheme:
A kind of anti-electromagnetic interference socket of the present utility model, comprise Socket casing, supply hub, switch, power cord plug, described power cord plug is positioned at the Socket casing end, switch is positioned at the middle part of Socket casing, also comprise the filter circuit mainboard, this filter circuit mainboard is fixed between switch and the supply hub, and is electrically connected with supply hub with switch.
Wherein, described filter circuit mainboard comprises the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, a common mode inductance, described the first resistance and the input that is connected on the filter circuit mainboard after the second resistance is connected, the second electric capacity and the first resistance, the second resistance are in parallel, the two ends of input termination second electric capacity of described common mode inductance, output termination the 3rd electric capacity of common mode inductance, connect filter circuit mainboard output after the first electric capacity and the 4th capacitances in series, between the first electric capacity and the 4th electric capacity, be connected to earth terminal.
Wherein, described common mode inductance is measure-alike by two, and the coil that the number of turn is identical is wound on symmetrically on the same ferrite toroidal magnetic core and forms, and this common mode inductance is provided with four taps.
Owing to taked above technical scheme, the utility model has the advantage of:
The utility model can play power filter effect and electromagnetic interference inhibitory action, when making electrical appliance by the utility model, can drop to electromagnetic interference minimum.
Description of drawings
Fig. 1 is the schematic diagram of the utility model contour structures;
Fig. 2 is the conspectus of the utility model filter circuit mainboard.
Among the figure, 1, power cord plug; 2, switch; 3, filter circuit mainboard; 4, supply hub; 5, Socket casing; PE, earth terminal; L1, common mode inductance; R1, the first resistance; R2, the second resistance; C1, the first electric capacity; C2, the second electric capacity; C3, the 3rd electric capacity; C4, the 4th electric capacity; LIn, live wire input; NIn, zero line input; LOut, live wire output; NOut, zero line output.
Embodiment
Referring to Fig. 1-Fig. 2, a kind of anti-electromagnetic interference socket of the present utility model, formed by power cord plug 1, switch 2, filter circuit mainboard 3, supply hub 4, Socket casing 5, wherein: power cord plug is positioned at the Socket casing end, switch is positioned at the middle part of Socket casing, also comprise the filter circuit mainboard, this filter circuit mainboard is fixed between switch and the supply hub, and is electrically connected with supply hub with switch.Filter circuit mainboard 3 is by the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, a common mode inductance, described the first resistance and the input that is connected on the filter circuit mainboard after the second resistance is connected, the second electric capacity and the first resistance, the second resistance are in parallel, the two ends of input termination second electric capacity of described common mode inductance, output termination the 3rd electric capacity of common mode inductance, connect filter circuit mainboard output after the first electric capacity and the 4th capacitances in series, between the first electric capacity and the 4th electric capacity, be connected to earth terminal.Common mode inductance is measure-alike by two, and the coil that the number of turn is identical is wound on symmetrically on the same ferrite toroidal magnetic core and forms, and this common mode inductance is provided with four taps, namely forms the device of four ends.
The utility model master adopts the most frequently used capacitor and inductor filtering mode, and inductance, capacitance are larger as everybody knows, and then its damping capacity to noise is stronger, and can reach it, corner frequency is lower, and is better to the inhibition 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 larger, the self-resonant frequency of element impedance characteristic was lower, and the frequency range of sustainable attenuate acoustic noise narrows down relatively, so its value can not unrestrictedly increase.Consider that capacitance comes littlely to the rate of change of volume than inductance value, and commercially available capacitor has fixing appearance value, lack flexibility, so when determining the component value of common and different mode filter, the utility model will be paid the utmost attention to electric capacity, under the safety limiting permission, select larger appearance value as far as possible.The Electromagnetic interference filter framework that this product adopts as shown in Figure 2, C2 wherein, but C3 is X electric capacity filtering differential mode (DM) noise of 470nF/275V, and C1, but C4 is Y electric capacity filtering common mode (CM) noise of 2.2nF, common mode inductance L1 is a common mode disturbances suppression device take ferrite as magnetic core, it is measure-alike by two, the coil that the number of turn is identical is wound on the same ferrite toroidal magnetic core symmetrically, form a four-terminal device, it is inhibited to present large inductance for common-mode signal, works hardly and present very little leakage inductance for difference mode signal.Principle is that the magnetic flux in the magnet ring superposes mutually when flowing through common mode current, thereby has sizable inductance value, and 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 on the difference mode signal of circuit normal transmission without impact, the first resistance R 1, the second resistance R 2 are bleeder resistance, rush electricity and release for the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all execution modes exhaustive.Everyly belong to the row that apparent variation that the technical solution of the utility model extends out or change still are in protection range of the present utility model.
Claims (3)
1. anti-electromagnetic interference socket, comprise Socket casing, supply hub, switch, power cord plug, described power cord plug is positioned at the Socket casing end, switch is positioned at the middle part of Socket casing, it is characterized in that: also comprise the filter circuit mainboard, this filter circuit mainboard is fixed between switch and the supply hub, and is electrically connected with supply hub with switch.
2. according to a kind of anti-electromagnetic interference socket claimed in claim 1, it is characterized in that: described filter circuit mainboard comprises the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, a common mode inductance, described the first resistance and the input that is connected on the filter circuit mainboard after the second resistance is connected, the second electric capacity and the first resistance, the second resistance is in parallel, the two ends of input termination second electric capacity of described common mode inductance, output termination the 3rd electric capacity of common mode inductance, connect filter circuit mainboard output after the first electric capacity and the 4th capacitances in series, between the first electric capacity and the 4th electric capacity, be connected to earth terminal.
3. according to a kind of anti-electromagnetic interference socket claimed in claim 2, it is characterized in that: described common mode inductance is measure-alike by two, and the coil that the number of turn is identical is wound on symmetrically on the same ferrite toroidal magnetic core and forms, and this common mode inductance is provided with four taps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120474 CN202737264U (en) | 2012-03-27 | 2012-03-27 | Anti-electromagnetic-interference socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120474 CN202737264U (en) | 2012-03-27 | 2012-03-27 | Anti-electromagnetic-interference socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737264U true CN202737264U (en) | 2013-02-13 |
Family
ID=47662926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220120474 Expired - Fee Related CN202737264U (en) | 2012-03-27 | 2012-03-27 | Anti-electromagnetic-interference socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737264U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683879A (en) * | 2013-12-30 | 2014-03-26 | 无锡天和电子有限公司 | Power supply noise filter |
| CN107404673A (en) * | 2017-08-31 | 2017-11-28 | 苏州惠华电子科技有限公司 | A kind of electronic wiring frame of the RFID based on EMI |
| CN107529099A (en) * | 2017-08-31 | 2017-12-29 | 苏州惠华电子科技有限公司 | A kind of electrical harnesses frame control system based on RFID |
-
2012
- 2012-03-27 CN CN 201220120474 patent/CN202737264U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683879A (en) * | 2013-12-30 | 2014-03-26 | 无锡天和电子有限公司 | Power supply noise filter |
| CN107404673A (en) * | 2017-08-31 | 2017-11-28 | 苏州惠华电子科技有限公司 | A kind of electronic wiring frame of the RFID based on EMI |
| CN107529099A (en) * | 2017-08-31 | 2017-12-29 | 苏州惠华电子科技有限公司 | A kind of electrical harnesses frame control system based on RFID |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204179941U (en) | A kind of filter circuit and air conditioner for suppressing power to harass resonance peak | |
| CN201523135U (en) | socket with electromagnetic interference suppression | |
| CN205666807U (en) | Filter circuit , power cord subassembly and consumer | |
| CN202737264U (en) | Anti-electromagnetic-interference socket | |
| CN203933387U (en) | A kind of for suppressing filter circuit and the air conditioner of electromagnetic interference | |
| CN104201590B (en) | A kind of method suppressing GIS internal high frequency Conduction Interference | |
| CN105048797A (en) | Filter circuit for electromagnetic heating of electromagnetic type heating electric cooker | |
| CN203554278U (en) | A household electrical appliance and an EMI filter circuit thereof | |
| CN109698558A (en) | A kind of wireless energy transform device with noise-reducing design | |
| CN204858963U (en) | Electromagnetic type adds thermoelectric rice cooker's filter circuit for electromagnetic heating | |
| CN206602763U (en) | A kind of anti-electromagnetic interference circuit module | |
| EP2625997A1 (en) | Dish-washing machine | |
| CN204334316U (en) | Reduce the device of switching circuit electromagnetic noise | |
| CN206149135U (en) | EMC filter circuit and electromagnetism stove | |
| JP2012089924A (en) | Noise elimination filter | |
| CN206313657U (en) | EMC filter circuit and electromagnetism stove | |
| CN104638903A (en) | Washing machine and interference suppression module thereof | |
| CN202142729U (en) | Lightning protection filtering socket | |
| CN206313650U (en) | Electromagnetic compatibility wave filter and household electrical appliance | |
| CN206211829U (en) | Electromagnetic compatibility filter circuit, dc source and household electrical appliance | |
| CN203933388U (en) | A kind of for suppressing electromagnetic interference filter circuit and the air conditioner of resonance peak | |
| JP6060410B2 (en) | Power line communication system and watt-hour meter used therefor | |
| CN108075637A (en) | EMC filter circuit, electromagnetic heating Household appliance control circuit and household electrical appliance | |
| CN206180833U (en) | Electromagnetic compatibility wave filter and domestic appliance | |
| CN104702096B (en) | The design method of digital active EMI filtering systems and decoupling circuit containing decoupling circuit |
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: 20130213 Termination date: 20130327 |