CN206602763U - A kind of anti-electromagnetic interference circuit module - Google Patents
A kind of anti-electromagnetic interference circuit module Download PDFInfo
- Publication number
- CN206602763U CN206602763U CN201720366120.2U CN201720366120U CN206602763U CN 206602763 U CN206602763 U CN 206602763U CN 201720366120 U CN201720366120 U CN 201720366120U CN 206602763 U CN206602763 U CN 206602763U
- Authority
- CN
- China
- Prior art keywords
- filter capacitor
- inductance
- inputs
- common mode
- electromagnetic interference
- 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
Abstract
The utility model proposes a kind of anti-electromagnetic interference circuit module scheme, to increase the anti-outer impact capacity of electrical appliance, the circuit safety of electrical appliance is ensured, it has two inputs and two output ends, it is characterised in that：Piezo-resistance RV, thermistor NTC, filter capacitor C1, C2, CY1 and CY2, common mode inductance L1, and inductance L2 are provided between two described inputs and two output ends；Specifically, the input side parallel connection of the common mode block inductance L1 is connected to piezo-resistance RV and filter capacitor C1, its outlet side parallel connection is connected to filter capacitor C2, filter capacitor C2 two ends are parallel to after filter capacitor CY1 and the CY2 series connection, phase contact ground connection between the filter capacitor CY1 and CY2, the inductance L2 is provided between the outlet side of the filter capacitor C2 and common mode capacitance C1, the thermistor NTC is located between the inductance L2 and output end.
Description
Technical field
The utility model is the anti-interference application of electric input side of electrical appliance, and in particular to a kind of anti-electromagnetic interference circuit mould
Block.
Background technology
Electrical appliance can still remain induced electricity due to circuit aging after its closing, or due to the order of power network reason
Electrical appliance input side can be disturbed by surge and electric current hum, and this shows that noise belongs to two-way interference signal, and electronic equipment was both
It is the object of noise jamming, is a noise source again.These induced electricities, surge and the interference of electric current hum are after electrical appliance closing
Circuit can still be impacted, so the life-span of electrical appliance can not only have been influenceed for a long time, and there is certain electricity safety
Hidden danger.
Utility model content
To overcome the defect of electromagnetism interference difference in the prior art, the utility model proposes a kind of anti-electromagnetic interference circuit
Module scheme, to increase the anti-outer impact capacity of electrical appliance, ensures the circuit safety of electrical appliance, its particular technique content is as follows：
A kind of anti-electromagnetic interference circuit module, with two inputs and two output ends, two described inputs and two outputs
Piezo-resistance RV, thermistor NTC, filter capacitor C1, C2, CY1 and CY2, common mode inductance L1, and inductance are provided between end
L2；Specifically, the input side parallel connection of the common mode block inductance L1 is connected to piezo-resistance RV and filter capacitor C1, its outlet side is in parallel
Filter capacitor C2 is connected to, filter capacitor C2 two ends, the filter capacitor are parallel to after filter capacitor CY1 and the CY2 series connection
The inductance is provided between phase contact ground connection between CY1 and CY2, the outlet side of the filter capacitor C2 and common mode capacitance C1
L2, the thermistor NTC are located between the inductance L2 and output end.
In one or more embodiments of the present utility model, it is connected between input and common mode inductance the L1 input sides
Fuse FUSE.
In one or more embodiments of the present utility model, two input is respectively L inputs and N inputs,
Fuse FUSE is connected between L inputs and common mode inductance the L1 input sides.
In under identical design, the utility model also proposes a kind of anti-electromagnetic interference circuit module, with three inputs and
Two output ends, three input is respectively L inputs, N inputs and PE ends, is provided between the L inputs and N inputs
Piezo-resistance RV, thermistor NTC, filter capacitor C1, C2, CY1 and CY2, common mode inductance L1, and inductance L2；Specifically, institute
The input side parallel connection for stating common mode block inductance L1 is connected to piezo-resistance RV and filter capacitor C1, and its outlet side parallel connection is connected to filter capacitor
C2, is parallel to after filter capacitor CY1 and the CY2 series connection between filter capacitor C2 two ends, the filter capacitor CY1 and CY2
Phase contact draw and be connected to the PE ends, the inductance L2 is provided between the outlet side of the filter capacitor C2 and common mode capacitance C1,
The thermistor NTC is located between the inductance L2 and output end.
In one or more embodiments of the present utility model, the L inputs are indirectly with common mode inductance L1 input sides
There is fuse FUSE.
The utility model beneficial effect is：In terms of formation feature, power supply noise interference is divided to series mode interference and common mode disturbances two
Kind, the anti-electromagnetic interference circuit module of this patent meets Electro Magnetic Compatibility (EMC) requirement, on the one hand filtered out from AC power cord
The external electromagnetic interference of upper introducing, is on the other hand also avoided that in-house facility sends noise jamming to outside, in case influence is same
The normal work of other electronic equipments under electromagnetic environment.In addition, the reactance electromagnetic interference circuit module of this patent is to string mould, common mode
Inhibitory action is all played in interference.
The utility model is simple for structure, effective, the technical and practicality with brilliance, is especially suitable for promoting the use of.
Brief description of the drawings
Fig. 1 is the electrical block diagram of anti-electromagnetic interference circuit module embodiments 1 of the present utility model.
Fig. 2 is the electrical block diagram of anti-electromagnetic interference circuit module embodiments 2 of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, application scheme is further described：
Embodiment 1
Referring to accompanying drawing 1, a kind of anti-electromagnetic interference circuit module, with two inputs and two output ends, two input
Respectively L inputs and N inputs, are provided with piezo-resistance RV, thermistor NTC, filter between the L inputs and N inputs
Ripple electric capacity C1, C2, CY1 and CY2, common mode inductance L1, and inductance L2；Specifically, the input side of the common mode block inductance L1 is simultaneously
Connection has piezo-resistance RV and filter capacitor C1, and its outlet side parallel connection is connected to filter capacitor C2, the filter capacitor CY1 and CY2
The phase contact ground connection between filter capacitor C2 two ends, the filter capacitor CY1 and CY2, the filtered electrical are parallel to after series connection
Hold C2 and common mode capacitance C1 outlet side between be provided with the inductance L2, the thermistor NTC located at the inductance L2 with it is defeated
Go out between end, fuse FUSE is connected between L inputs and common mode inductance the L1 input sides.
Embodiment 2
Referring to accompanying drawing 2, a kind of anti-electromagnetic interference circuit module, with three inputs and two output ends, three input
Respectively L inputs, N inputs and PE ends, are provided with piezo-resistance RV, thermistor between the L inputs and N inputs
NTC, filter capacitor C1, C2, CY1 and CY2, common mode inductance L1, and inductance L2；Specifically, the common mode block inductance L1's is defeated
Enter side parallel connection and be connected to piezo-resistance RV and filter capacitor C1, its outlet side parallel connection is connected to filter capacitor C2, the filter capacitor CY1
The phase contact being parallel to after being connected with CY2 between filter capacitor C2 two ends, the filter capacitor CY1 and CY2 draw be connected to it is described
PE ends（That is the grounding leg of three-pin plug）, the inductance is provided between the outlet side of the filter capacitor C2 and common mode capacitance C1
L2, the thermistor NTC are located between the inductance L2 and output end, the L inputs and common mode inductance L1 input sides it
Between be connected to fuse FUSE.
In above-described embodiment 1 and 2, when there are common mode disturbances, total inductance amount is rapid after the coupling of the common mode inductance L1
Increase, therefore very big induction reactance is presented to common-mode signal, it is allowed to not easily pass through.Its two coils are rotating around in low-loss, height
On the ferrite bead of permeability, when rated current is larger, the line footpath of common mode choke also will accordingly increase, to bear
Larger electric current.In addition, suitably increasing inductance value, low cut characteristic can be improved.
The filter capacitor C1 and C2 is mainly used to filter out series mode interference, can be using capacitors, capacity such as thin film capacitors
Scope is about the μ F of 0.01 Μ f ~ 0.47, is mainly used to filter out series mode interference.And filter capacitor CY1 and CY2 are connected across output end
And by neutral earthing, effectively suppression common mode can disturb.C3 and C4 can and Ceramics electric capacity, range of capacity is 2200Pf ~ 0.1
μF.To reduce leakage current, capacitance is usually no more than 0.1 μ F, and capacitor midpoint should be connected with the earth.It is used as preferred side
Case, filter capacitor C1, C2, CY1 and CY2 pressure voltage are 630VDC or 250VAC.
The piezo-resistance RV carries out accommodation according to the voltage of input side, it is to avoid subsequent conditioning circuit is by direct surge
Impact；The thermistor NTC enters to know accommodation according to environment temperature, it is ensured that the stabilization of power supply output.
It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder
Deduce, replace with, technology that is approximate or making based on this, improving etc., it is regarded as the protection domain of this patent.
Claims (5)
1. a kind of anti-electromagnetic interference circuit module, with two inputs and two output ends, it is characterised in that：Two described inputs
And two be provided with piezo-resistance RV, thermistor NTC, filter capacitor C1, C2, CY1 and CY2 between output end, common mode inductance L1, with
And inductance L2；Specifically, the input side parallel connection of the common mode block inductance L1 is connected to piezo-resistance RV and filter capacitor C1, it is exported
Side parallel connection is connected to filter capacitor C2, and filter capacitor C2 two ends, the filter are parallel to after filter capacitor CY1 and the CY2 series connection
Provided with described between phase contact ground connection between ripple electric capacity CY1 and CY2, the outlet side of the filter capacitor C2 and common mode capacitance C1
Inductance L2, the thermistor NTC are located between the inductance L2 and output end.
2. anti-electromagnetic interference circuit module according to claim 1, it is characterised in that：The input and common mode inductance L1
Fuse FUSE is connected between input side.
3. anti-electromagnetic interference circuit module according to claim 1 or 2, it is characterised in that：Two input is respectively L
Fuse FUSE is connected between input and N inputs, L inputs and common mode inductance the L1 input sides.
4. a kind of anti-electromagnetic interference circuit module, with three inputs and two output ends, three input is respectively L inputs
End, N inputs and PE ends, it is characterised in that：Piezo-resistance RV, thermistor are provided between the L inputs and N inputs
NTC, filter capacitor C1, C2, CY1 and CY2, common mode inductance L1, and inductance L2；Specifically, the common mode block inductance L1's is defeated
Enter side parallel connection and be connected to piezo-resistance RV and filter capacitor C1, its outlet side parallel connection is connected to filter capacitor C2, the filter capacitor CY1
The phase contact being parallel to after being connected with CY2 between filter capacitor C2 two ends, the filter capacitor CY1 and CY2 draw be connected to it is described
The inductance L2 is provided between PE ends, the outlet side of the filter capacitor C2 and common mode capacitance C1, the thermistor NTC is located at
Between the inductance L2 and output end.
5. anti-electromagnetic interference circuit module according to claim 4, it is characterised in that：The L inputs and common mode inductance
Fuse FUSE is connected between L1 input sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366120.2U CN206602763U (en) | 2017-04-10 | 2017-04-10 | A kind of anti-electromagnetic interference circuit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366120.2U CN206602763U (en) | 2017-04-10 | 2017-04-10 | A kind of anti-electromagnetic interference circuit module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206602763U true CN206602763U (en) | 2017-10-31 |
Family
ID=60144043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720366120.2U Expired - Fee Related CN206602763U (en) | 2017-04-10 | 2017-04-10 | A kind of anti-electromagnetic interference circuit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206602763U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751743A (en) * | 2018-12-05 | 2019-05-14 | 珠海格力电器股份有限公司 | The full DC driven air-conditioner control system and air conditioner of reversed function are prevented with power supply |
| CN110932543A (en) * | 2019-12-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Filter and refrigerator |
-
2017
- 2017-04-10 CN CN201720366120.2U patent/CN206602763U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751743A (en) * | 2018-12-05 | 2019-05-14 | 珠海格力电器股份有限公司 | The full DC driven air-conditioner control system and air conditioner of reversed function are prevented with power supply |
| CN110932543A (en) * | 2019-12-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Filter and refrigerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104270002B (en) | Passive suppression method for conducted electromagnetic interface of PWM (power width modulation) power converter | |
| CN101651408A (en) | Filtering module inhibiting common mode noise and differential mode noise | |
| CN105403759A (en) | Leakage current detection circuit for ADC sampling | |
| CN206602763U (en) | A kind of anti-electromagnetic interference circuit module | |
| CN107134916B (en) | Device and method for preventing electromagnetic information leakage in alternating-current power supply transmission | |
| CN102088188A (en) | DC power supply filter | |
| CN203554278U (en) | A household electrical appliance and an EMI filter circuit thereof | |
| CN209233717U (en) | A kind of EMC filter circuit | |
| CN205566240U (en) | Multi -level filter | |
| CN105356740B (en) | Inhibit the electrical energy transformer of structure with electromagnetic interference | |
| CN206023721U (en) | A kind of electromagnetic compatibility filter circuit | |
| CN206993068U (en) | Filter circuit and cooking apparatus for household electrical appliances | |
| Jiraprasertwong et al. | Electromagnetic interference in photovoltaic system and mitigation of conducted noise at DC side | |
| CN204905867U (en) | Filter of high frequency electric sword power | |
| CN107979273A (en) | Power filter protects circuit | |
| CN208820682U (en) | A kind of high-frequency heat sealing machine anti-jamming circuit | |
| CN201490718U (en) | Anti-interference circuit for protecting power network and electric appliance | |
| CN202737264U (en) | Anti-electromagnetic-interference socket | |
| CN107359784B (en) | A kind of the input EMC filter and production method of high voltage direct current input power supply | |
| CN104797064A (en) | Emc circuit | |
| CN102307009A (en) | EMI filter circuit | |
| CN206149135U (en) | EMC filter circuit and electromagnetism stove | |
| CN111351995B (en) | System for restraining conducted EMI and household appliance | |
| CN203933388U (en) | A kind of for suppressing electromagnetic interference filter circuit and the air conditioner of resonance peak | |
| CN2571049Y (en) | Filtration type power supply lightning protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171031 Termination date: 20190410 |