CN208835995U - A kind of EMI filter filtered with power filter and signal - Google Patents
A kind of EMI filter filtered with power filter and signal Download PDFInfo
- Publication number
- CN208835995U CN208835995U CN201821763758.0U CN201821763758U CN208835995U CN 208835995 U CN208835995 U CN 208835995U CN 201821763758 U CN201821763758 U CN 201821763758U CN 208835995 U CN208835995 U CN 208835995U
- Authority
- CN
- China
- Prior art keywords
- signal
- power
- filter
- output end
- input
- 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.)
- Active
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Filters And Equalizers (AREA)
Abstract
A kind of EMI filter filtered with power filter and signal, including encapsulating cabinet, encapsulation cabinet includes signal filtering chamber, power input, signal input part, power output end, signal output end and power filter chamber, it is separated between signal filtering chamber and power filter chamber by metal partion (metp), metal partion (metp) close to power filter chamber side is equipped with electric source filter circuit plate, and the metal partion (metp) close to signal filtering chamber side is equipped with signal filter circuit plate；Electric source filter circuit plate passes through power input conducting wire respectively and connects the power input and power output end with power takeoff leads；Signal filter circuit plate passes through signal input lead respectively and connects the signal input part and signal output end with signal output lead；Power input conducting wire and power takeoff leads use high-temperature shielding conducting wire, and signal input lead and signal output lead use the conducting wire of housing gauze screen.The utility model improves Electro Magnetic Compatibility.
Description
Technical field
The utility model relates to the fields EMI, and in particular to a kind of EMI filtering dress filtered with power filter and signal
It sets.
Background technique
EMI filter is a kind of EMI filter filtered with power filter and signal, the power supply of filter
And signal filtering there are problems that forming crosstalk couplings between interference signal.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides one kind, and there is power filter and signal to filter
The EMI filter of wave, solves the problems, such as the Electro Magnetic Compatibility of EMI.To achieve the above object, the utility model uses
The following technical solution: a kind of EMI filter filtered with power filter and signal, including encapsulation cabinet, package
Body includes that signal filters chamber, power input, signal input part, power output end, signal output end and power filter chamber,
It is separated between signal filtering chamber and power filter chamber by metal partion (metp), close to the metal partion (metp) of power filter chamber side
It is equipped with electric source filter circuit plate, the metal partion (metp) close to signal filtering chamber side is equipped with signal filter circuit plate；
Electric source filter circuit plate pass through respectively power input conducting wire connected with power takeoff leads the power input and
Power output end；Signal filter circuit plate passes through signal input lead respectively and connects the signal input part with signal output lead
And signal output end；Power input conducting wire and power takeoff leads use high-temperature shielding conducting wire, and signal input lead and signal are defeated
Conducting wire uses the conducting wire of housing gauze screen out.
Further, power input and signal input part are in the ipsilateral of encapsulation cabinet, power output end and signal output
It holds in the ipsilateral of encapsulation cabinet；Power input is oppositely arranged with power output end.
Further, in signal filtering chamber outer chamber walls, power input is led for power input and signal input part setting
Line sequentially passes through signal filtering chamber outer chamber walls, signal filtering chamber and metal partion (metp) and the input terminal of electric source filter circuit plate connects
It connects；Power output end and signal output end are arranged in power filter chamber outer chamber walls, and signal output lead sequentially passes through power supply
Filtering chamber outer chamber walls, power filter chamber and metal partion (metp) are connect with the output end of signal filter circuit plate.
Further, it is anti-to be arranged with light-duty nickel-clad copper braiding for the external signal input lead of package and signal output lead
Wave set.
Further, electric source filter circuit is provided on the electric source filter circuit plate, electric source filter circuit includes from defeated
Enter and hold the common mode inductance L1, the common mode inductance L2 that are sequentially connected in series to output end and ground connection punching filter group, common mode inductance L1's is defeated
Enter end and be parallel with capacitor C1, the output end of mould inductance L1 is parallel with capacitor C2, is sequentially connected in series between the input terminal of common mode inductance L2
Have a capacitor C3 and capacitor C4, the tie point of capacitor C3 and capacitor C4 indirectly；The output end of common mode inductance L2 is parallel with capacitor
C5；Be grounded punching filter group includes two ground connection punching filters, is grounded punching filters in series in every route；Ground connection
Punching filter include inductance and with the concatenated feedthrough capacitor of inductance；The output end of punching filter is grounded as power filter electricity
The output end on road.
Further, signal filter circuit is provided on signal filter circuit plate, signal filter circuit includes multiple high frequencies
Common-mode filter, each high frequency common mode filter connection are connected into every group of signal wire.
Compared with the prior art, the utility model has the following beneficial effects:
1, encapsulation box house sets filtering chamber and power filter chamber, electric source filter circuit plate and signal filter circuit plate
With terminal (power input, signal input part, power output end, signal output end), shielded by being covered to signal input lead
The mode of net is realized, and the power filter of product and signal filtering are isolated, then by way of metal plate and punching filter
Make input and output, equipment is made to meet Electro Magnetic Compatibility.
2, power supply and signal filter circuit plate are isolated by metal plate earthing, can prevent from forming crosstalk between interference signal
The problem of coupling；The input power cord of EMI filter is inputted by the way of high-temperature shielding conducting wire, and signal input line is adopted
It is inputted with the mode of conducting wire housing gauze screen, can effectively avoid the interference of power supply and signal wire to intercouple in this way and ask
Topic.Signal filtering and power filter part are separated with metal partion (metp), can then inhibit the coupling between unlike signal well in this way
The mode that phenomenon, power supply and segment signal output are all made of conducting wire housing gauze screen is exported, and effectively avoids solving in turn
Electro Magnetic Compatibility between system in signals transmission.
3, signal input lead part output line and power filter are in the same cavity, and the high-frequency noise of signal can coupling
It closes on power supply line, noise passes through system by power supply line, and the RE102 of the EMC test of whole system is caused to test in height
Frequency partial noise is bigger, and this product shields input signal cable using light-duty nickel-clad copper braiding anti-wave sleeve, and to anti-wave
Set is grounded, and power supply line is prevented to be coupled.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this filter；
Fig. 2 is the electric source filter circuit and signal filter circuit of this filter；
Fig. 3 is the side view of this filter.
Specific embodiment
Scheme is described further now in conjunction with attached drawing.
Implementation column 1
As shown in Figs. 1-3: what P and N was represented is the input terminal of electric source filter circuit；TX+ and TX- represents first group of signal wire
Mark；The mark of second group of signal wire of RX+ and RX- table；P+ and P- respectively represents the output end of first group of signal wire；
A kind of EMI filter filtered with power filter and signal, including encapsulation cabinet, encapsulation cabinet include letter
Number filtering chamber 1, power input, signal input part, power output end, signal output end and power filter chamber 6, signal filter
It is separated between wave chamber 1 and power filter chamber 6 by metal partion (metp) 4, the metal partion (metp) 4 close to 6 side of power filter chamber
It is equipped with electric source filter circuit plate, the metal partion (metp) 4 close to signal filtering 1 side of chamber is equipped with signal filter circuit plate；Encapsulation
Body side lower end is provided with mounting plate 8；
Electric source filter circuit plate passes through power input conducting wire 2 respectively and power takeoff leads 5 connect the power input
And power output end；Signal filter circuit plate pass through signal input lead 3 respectively and signal output lead 7 to connect the signal defeated
Enter end and signal output end；Power input conducting wire 2 and power takeoff leads 5 use high-temperature shielding conducting wire, signal input lead 3
With signal output lead 7 using the conducting wire of housing gauze screen.
Power input and signal input part are in the ipsilateral of encapsulation cabinet, and power output end and signal output end are in package
Body it is ipsilateral；Power input is oppositely arranged with power output end.Setting reduces the signal interference between input and output in this way.
In signal filtering chamber outer chamber walls, power input conducting wire 2 is successively worn for power input and signal input part setting
Signal filtering chamber outer chamber walls, signal filtering chamber and metal partion (metp) 4 is crossed to connect with the input terminal of electric source filter circuit plate；Power supply
Output end and signal output end are arranged in power filter chamber outer chamber walls, and signal output lead 7 sequentially passes through power filter chamber
Outdoor locular wall, power filter chamber and metal partion (metp) 4 are connect with the output end of signal filter circuit plate.First signal is filtered
Wave reduces the high-frequency noise of signal and the time of contact of power supply line, reduces the influence of the high-frequency noise of signal.
The external signal input lead 3 of package and signal output lead 7 are arranged with light-duty nickel-clad copper braiding anti-wave sleeve.
Electric source filter circuit is provided on the electric source filter circuit plate, electric source filter circuit includes from input terminal to output
Common mode inductance L1, the common mode inductance L2 being sequentially connected in series and ground connection punching filter group are held, the input terminal of common mode inductance L1 is parallel with
Capacitor C1, the output end of mould inductance L1 are parallel with capacitor C2, be sequentially connected in series between the input terminal of common mode inductance L2 capacitor C3 and
The tie point of capacitor C4, capacitor C3 and capacitor C4 indirectly；The output end of common mode inductance L2 is parallel with capacitor C5；Ground connection is worn
Heart filter group includes two ground connection punching filters, is grounded punching filters in series in every route；It is grounded punching filtering
Device include inductance and with the concatenated feedthrough capacitor of inductance；It is grounded output of the output end of punching filter as electric source filter circuit
End.One of ground connection punching filter includes inductance L3, and inductance L3 is in series with feedthrough capacitor C8；Another ground connection punching filtering
Device includes inductance L4, and inductance L4 is in series with feedthrough capacitor C9, and ground connection is connected between feedthrough capacitor C8 and feedthrough capacitor C9；Inductance
The input terminal of L3 and inductance L4 are connected to the both ends of capacitor C5, also successively go here and there between inductance L3 and the input terminal of inductance L4
Be associated with capacitor C6 and capacitor C7, the tie point of capacitor C6 and capacitor C7 indirectly.
Signal filter circuit is provided on signal filter circuit plate, signal filter circuit includes multiple high frequency common mode filtering
Device, each high frequency common mode filter connection are connected into every group of signal wire.The high frequency common mode filter connected on first group of signal wire
Including common mode inductance L5, capacitor C10 and capacitor C11, capacitor C10 and capacitor have been sequentially connected in series between the output end of common mode inductance L5
C11 tie point indirectly.
Common mode inductance L1, common mode inductance L2 and ground connection punching filter group and capacitor C3, capacitor C4, capacitor C6 and capacitor
C7 forms three-level filtering circuit, inhibits to common mode interference；3 line capacitances (C1, C2 and C5) carry out DM EMI
Inhibit, increases 2 ground connection punching filters to improve the High frequency filter effect of power unit, signal filtering is total using high frequency
The mode of mode filter and ground capacity is filtered, and common-mode filter high-frequency resistance with higher can have High-frequency Interference
There is good filter effect.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (6)
1. a kind of EMI filter filtered with power filter and signal, which is characterized in that including encapsulating cabinet, encapsulation
Cabinet includes signal filtering chamber (1), power input, signal input part, power output end, signal output end and power filter
Chamber (6) is separated between signal filtering chamber (1) and power filter chamber (6) by metal partion (metp) (4), is filtered close to power supply
The metal partion (metp) (4) of wave chamber (6) side is equipped with electric source filter circuit plate, the metal partion (metp) close to signal filtering chamber (1) side
(4) it is equipped with signal filter circuit plate；
Electric source filter circuit plate passes through power input conducting wire (2) respectively and power takeoff leads (5) connect the power input
And power output end；Signal filter circuit plate passes through signal input lead (3) respectively and signal output lead (7) connects the letter
Number input terminal and signal output end；Power input conducting wire (2) and power takeoff leads (5) use high-temperature shielding conducting wire, and signal is defeated
Enter conducting wire (3) and signal output lead (7) uses the conducting wire of housing gauze screen.
2. a kind of EMI filter filtered with power filter and signal as described in claim 1, which is characterized in that
Power input and signal input part are encapsulating the ipsilateral of cabinet, power output end and signal output end in the same of encapsulation cabinet
Side；Power input is oppositely arranged with power output end.
3. a kind of EMI filter filtered with power filter and signal as claimed in claim 2, which is characterized in that
In signal filtering chamber outer chamber walls, power input conducting wire (2) sequentially passes through signal for power input and signal input part setting
Filtering chamber outer chamber walls, signal filtering chamber and metal partion (metp) (4) are connect with the input terminal of electric source filter circuit plate；Power supply output
End and signal output end are arranged in power filter chamber outer chamber walls, and signal output lead (7) sequentially passes through power filter chamber
Outer chamber walls, power filter chamber and metal partion (metp) (4) are connect with the output end of signal filter circuit plate.
4. a kind of EMI filter filtered with power filter and signal a method according to any one of claims 1-3, feature
It is, the external signal input lead (3) of package and signal output lead (7) are arranged with light-duty nickel-clad copper braiding anti-wave sleeve.
5. a kind of EMI filter filtered with power filter and signal a method according to any one of claims 1-3, feature
It is, electric source filter circuit is provided on the electric source filter circuit plate, and electric source filter circuit includes from input terminal to output end
Common mode inductance L1, the common mode inductance L2 and ground connection punching filter group, the input terminal of common mode inductance L1 being sequentially connected in series are parallel with electricity
Hold C1, the output end of mould inductance L1 is parallel with capacitor C2, capacitor C3 and electricity have been sequentially connected in series between the input terminal of common mode inductance L2
Hold C4, capacitor C3 and capacitor C4 tie point indirectly；The output end of common mode inductance L2 is parallel with capacitor C5；It is grounded punching filter
Wave device group includes two ground connection punching filters, is grounded punching filters in series in every route；It is grounded punching filter packet
Include inductance and with the concatenated feedthrough capacitor of inductance；It is grounded output end of the output end of punching filter as electric source filter circuit.
6. a kind of EMI filter filtered with power filter and signal a method according to any one of claims 1-3, feature
It is, signal filter circuit is provided on signal filter circuit plate, and signal filter circuit includes multiple high frequency common mode filters, often
A high frequency common mode filter connection is connected into every group of signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763758.0U CN208835995U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter filtered with power filter and signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763758.0U CN208835995U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter filtered with power filter and signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208835995U true CN208835995U (en) | 2019-05-07 |
Family
ID=66319759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821763758.0U Active CN208835995U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter filtered with power filter and signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208835995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900872A (en) * | 2020-07-23 | 2020-11-06 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
-
2018
- 2018-10-30 CN CN201821763758.0U patent/CN208835995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900872A (en) * | 2020-07-23 | 2020-11-06 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
| CN111900872B (en) * | 2020-07-23 | 2022-01-04 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208835996U (en) | A kind of EMI filter | |
| CN110429604A (en) | A kind of multistage strong electromagnetic pulse protection power-supply filter | |
| CN100495813C (en) | Ultra width band wave filter | |
| CN208835995U (en) | A kind of EMI filter filtered with power filter and signal | |
| US20140009243A1 (en) | Network signal coupling and emi protection circuit | |
| CN110729978A (en) | High-frequency common mode rejection circuit and electrical apparatus | |
| CN208078896U (en) | A kind of EMC power supply architectures | |
| CN207869198U (en) | A kind of low-frequency filter using magnetic bead as HF switch | |
| CN106454190A (en) | Band-pass filter having high out-of-band rejection of broad band | |
| CN212543737U (en) | EMI filtering device | |
| CN214798045U (en) | Connector interface processing circuit and two circuit board devices | |
| CN209267539U (en) | A kind of medical filter | |
| CN211127565U (en) | Special power filter for EMI alternating current medical equipment | |
| CN107681989A (en) | Feed-through capacitor formula power-supply filter and screened room | |
| CN205961072U (en) | Network filter that S type constructs around line knot | |
| CN207382271U (en) | Feed-through capacitor formula power-supply filter and screened room | |
| CN203775156U (en) | Low-leakage filter for shielded room | |
| CN203968074U (en) | A kind of Novel Filter circuit | |
| CN208369469U (en) | A kind of power-supply filter | |
| CN209184571U (en) | High low pass harmonic filter | |
| CN207801755U (en) | A kind of isolation circuit and isolating device | |
| CN2854833Y (en) | Superwide band filter | |
| CN217562971U (en) | Adapter type electromagnetic compatible filter | |
| CN203851106U (en) | Wave filter line | |
| CN205490535U (en) | Can reduce network processing apparatus of inductance error |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191206 Address after: 400000 Chongqing Jiulongpo District Kecheng Road 71, 71 with No. 1 Erlang International Student Pioneer Park C1 Building 1 Floor Patentee after: Chongqing Shansong Information Technology Co., Ltd. Address before: 400,000 Chongqing Jiulongpo District Kecheng Road 71, 71 with No. 1 Erlang International Student Pioneer Park C Building 1 Floor Patentee before: Chongqing Zesong Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |