CN107681989A - Feed-through capacitor formula power-supply filter and screened room - Google Patents
Feed-through capacitor formula power-supply filter and screened room Download PDFInfo
- Publication number
- CN107681989A CN107681989A CN201710984259.8A CN201710984259A CN107681989A CN 107681989 A CN107681989 A CN 107681989A CN 201710984259 A CN201710984259 A CN 201710984259A CN 107681989 A CN107681989 A CN 107681989A
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- CN
- China
- Prior art keywords
- feed
- capacitor
- inductance
- supply filter
- ground capacity
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 53
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 229910001369 Brass Inorganic materials 0.000 claims description 10
- 239000010951 brass Substances 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0014—Capacitor filters, i.e. capacitors whose parasitic inductance is of relevance to consider it as filter
Landscapes
- Filters And Equalizers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a kind of feed-through capacitor formula power-supply filter and screened room, this feed-through capacitor formula power-supply filter includes：Suitable for connect L lines and N lines respectively and structure identical two lines road；The circuit includes：Some inductance for being arranged in series, positioned at end of incoming cables and leading-out terminal it is equipped with feed-through capacitor；Ground capacity is equipped with the tie point of feed-through capacitor and corresponding inductance, and the tie point between two inductance is also connected with ground capacity；The core-theaded type power-supply filter of the present invention has the advantages of technical scheme is simple in construction, and also has good high frequency radiation attenuation characteristic, has good attenuating to high frequency radiation signal.
Description
Technical field
The present invention relates to a kind of feed-through capacitor formula power-supply filter and screened room.
Background technology
Power-supply filter cuts title wave filter, also known as " EMI power filter ", or EMI power-supply filters, be by electric capacity,
The filter circuit of inductance and resistance composition.Beyond power-supply filter can be to the frequency or the frequency of specific frequency in power line
Frequency is effectively filtered out, and obtains a clean power supply, or eliminate the power supply signal after a specific frequency.
A kind of passive bidirectional network that the filter circuit that power-supply filter is made up of electric capacity, inductance and resistance forms, it
One end be power supply, the other end is load.Its operation principle is exactly a kind of impedance network；Power-supply filter input, output
Side and the impedance of power supply and load-side are bigger, and the decay to electromagnetic interference is more effective, i.e. impedance network.Wave filter
Frequency beyond the frequency or the frequency of specific frequency in power line can be effectively filtered out, obtain a clean electricity
Source, or eliminate the power supply signal after a specific frequency.
What is especially generally solved in screened room traditional wave filter is that low-frequency range passes to interference, and high frequency radiation is disturbed
Decay be not highly desirable.
The content of the invention
It is an object of the invention to provide it is a kind of it is simple in construction, have good attenuation characteristics, to high frequency radiation interference have
The core-theaded type power-supply filter of good attenuating.
In order to solve the above-mentioned technical problem, the invention provides a kind of feed-through capacitor formula power-supply filter, including：
Suitable for connect L lines and N lines respectively and structure identical two lines road；
The circuit includes：Some inductance for being arranged in series, positioned at end of incoming cables and leading-out terminal it is equipped with feed-through capacitor；
Ground capacity is equipped with the tie point of feed-through capacitor and corresponding inductance, and
Tie point between two inductance is also connected with ground capacity.
Further, the feed-through capacitor formula power-supply filter includes body, and the body includes component storehouse, and respectively
Positioned at the inlet wire storehouse of component storehouse both sides and outlet storehouse, wherein
Two feed-through capacitors are separately mounted on inlet wire storehouse and outlet Cang Chu inlet wire dividing plate and outlet dividing plate.
Further, each ground capacity is using body housing as earth terminal.
Further, the inductance is two, and respectively the first inductance, the second inductance；
The ground capacity is three, and respectively the first ground capacity, the second ground capacity and the 3rd ground capacity；Its
In
What the left end of the screw rod right-hand member and the first inductance of one end of the first ground capacity and the feed-through capacitor of end of incoming cables was formed
Tie point is connected, its other end and cage connection；
One end of second ground capacity is connected with the tie point of first, second inductance, and its other end is external with this
Shell connects；
What the screw rod left end of the right-hand member of one end of the 3rd electric capacity and second inductance and the feed-through capacitor of leading-out terminal was formed
Tie point is connected, its other end and cage connection；
Form pi-network structure.
Further, the feed-through capacitor is suitable to be assemblied in respective diaphragms by mounting assembly.
Further, the mounting assembly includes：A pair of fasteners；
The pair of fastener includes：Brass bolt, the brass bolt are suitable to penetrate from the first end of feed-through capacitor, and from wearing
Second end of core electric capacity is passed, and feed-through capacitor is fastened in respective diaphragms by copper nut component；And
The brass bolt is further adapted for a binding post being fastened at the first end of feed-through capacitor；
Another binding post is fastened at copper nut component.
Further, it is provided with insulating washer between copper nut component on the inside of dividing plate.
Another aspect, present invention also offers a kind of screened room, to realize the decay of high frequency radiation interference.
The screened room is suitable to be equipped with above-mentioned core-theaded type power-supply filter.
The invention has the advantages that the core-theaded type power-supply filter of the present invention has simple in construction excellent of technical scheme
Point, and also there is good high frequency radiation attenuation characteristic, have good attenuating to high frequency radiation signal.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the circuit diagram of the feed-through capacitor formula power-supply filter of the present invention；
Fig. 2 is the product structure schematic diagram of the present invention；
Fig. 3 is the punching mounting structure schematic diagram of the present invention.
In figure：Feed-through capacitor 1, inductance 2, ground capacity 3, body 4, inlet wire storehouse 401, inlet wire dividing plate 401a, outlet storehouse
402nd, outlet dividing plate 402a, component storehouse 403, cover plate 404；
Brass bolt 101, copper nut component 102, the first copper nut 102a, the second copper nut 102b, binding post 103, absolutely
Edge packing ring 104.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Embodiment 1
Fig. 1 is the circuit diagram of the feed-through capacitor formula power-supply filter of the present invention；
As shown in figure 1, a kind of feed-through capacitor formula power-supply filter is present embodiments provided, including：
Suitable for connect L lines and N lines respectively and structure identical two lines road；L and N represents entering for live wire and zero line respectively
Line end (i.e. input), L ' and N ' represent the leading-out terminal (i.e. output end) of live wire and zero line respectively, and the circuit includes：Series connection is set
Some inductance 2 for putting, positioned at end of incoming cables and leading-out terminal it is equipped with feed-through capacitor 1；In the connection of feed-through capacitor 1 and corresponding inductance 2
Put and be equipped with ground capacity 3, and the tie point between two inductance 2 is also connected with ground capacity 3.
Fig. 2 is the product structure schematic diagram of the present invention.
The feed-through capacitor formula power-supply filter includes body 4, and the body 4 includes component storehouse 403, and position respectively
In the inlet wire storehouse 401 of the both sides of component storehouse 403 and outlet storehouse 402, wherein two feed-through capacitors 1 are separately mounted to be located at inlet wire storehouse
On 401 and outlet Cang402Chu inlet wire dividing plate 401a and outlet dividing plate 402a；And in inlet wire storehouse 401 and outlet Cang402Chu
Bottom is equipped with cover plate 404.
Further, each ground capacity 3 is using the shell of body 4 as earth terminal.
In fig. 2, the inductance 2, ground capacity 3 are located in component storehouse 403.
Inlet wire storehouse 401, outlet storehouse 402 and 403 3, component storehouse storehouse can be completely isolated, ensure the shielding of filter high-frequency
Efficiency, without using shielded cable.
The inductance is two in the present embodiment, and respectively the first inductance, the second inductance；The ground capacity is three
It is individual, and respectively the first ground capacity, the second ground capacity and the 3rd ground capacity；Wherein one end of the first ground capacity is with entering
The tie point that the screw rod right-hand member of the feed-through capacitor 1 of line end and the left end of the first inductance are formed is connected, its other end and cage connection；
One end of second ground capacity is connected with the tie point of first, second inductance, its other end and the cage connection of body 4；
The tie point phase that the screw rod left end of the right-hand member of one end of 3rd electric capacity and second inductance and the feed-through capacitor 1 of leading-out terminal is formed
Even, its other end and cage connection；Form pi-network structure.
In other implementations, the quantity of inductance is unlimited, can be other numbers, as long as in the end of incoming cables of series inductance circuit
Feed-through capacitor 1 is all connected with leading-out terminal, is belonged in the protection domain of this patent.
Fig. 3 is the mounting structure schematic diagram of the feed-through capacitor 1 of the present invention.
A kind of preferable assembly method as feed-through capacitor 1.
The feed-through capacitor 1 is suitable to be assemblied in respective diaphragms by mounting assembly.
Specifically, the mounting assembly includes：It is adapted to pass through a pair of fasteners of feed-through capacitor 1；The pair of fastener
Including：Brass bolt 101, the brass bolt 101 are suitable to penetrate from the first end of feed-through capacitor 1, and from the second end of feed-through capacitor 1
Pass, and feed-through capacitor 1 is fastened in respective diaphragms by copper nut component 102；And the brass bolt 101 be further adapted for by
One binding post 103 is fastened at the first end of feed-through capacitor 1；Another binding post 103 is fastened at copper nut component 102.
The copper nut component 102 includes：From dividing plate to inward side to the first copper nut 102a and the second bronze medal spiral shell of setting
Female 102b, and it is suitable to one binding post 103 of fastening between two copper nuts.
Insulating washer 104 is provided between copper nut component 102 on the inside of dividing plate, further improves filter high-frequency
Shield effectiveness.
Fig. 3 is only that a kind of mounting means of preferable feed-through capacitor 1 is presented, in other embodiments, as long as can be by punching
The technical scheme that electric capacity 1 is fastened on dividing plate is belonged in the protection domain of this patent.
Compared with prior art, the technical scheme of this feed-through capacitor formula power-supply filter is simple in construction, there is good height
Radio-frequency radiation attenuation characteristic, there is good attenuating to high frequency radiation signal.This feed-through capacitor formula power-supply filter mainly for
The attenuation requirement of high frequency radiation signal, the decay to difference mode signal is realized with simplest circuit structure.
Embodiment 2
On the basis of embodiment 1, a kind of screened room is present embodiments provided, to realize the decay of high frequency radiation interference.
Specifically, the screened room is suitable to be equipped with core-theaded type power-supply filter as described in Example 1.
This core-theaded type power-supply filter used in screened room, according to its frequency characteristic generally use low pass power-supply filter,
Because its structure is formed using feed-through capacitor, inductance and ground capacity, make its interference signal can be provided in stopband compared with
Big decay, especially for the radiation of high-frequency signal.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (8)
- A kind of 1. feed-through capacitor formula power-supply filter, it is characterised in that including：Suitable for connect L lines and N lines respectively and structure identical two lines road；The circuit includes：Some inductance for being arranged in series, positioned at end of incoming cables and leading-out terminal it is equipped with feed-through capacitor；Ground capacity is equipped with the tie point of feed-through capacitor and corresponding inductance, andTie point between two inductance is also connected with ground capacity.
- 2. the feed-through capacitor formula power-supply filter described in as requested 1, it is characterised in thatThe feed-through capacitor formula power-supply filter includes body, and the body includes component storehouse, and is located at component respectively The inlet wire storehouse and outlet storehouse of storehouse both sides, whereinTwo feed-through capacitors are separately mounted on inlet wire storehouse and outlet Cang Chu inlet wire dividing plate and outlet dividing plate.
- 3. core-theaded type power-supply filter according to claim 2, it is characterised in thatEach ground capacity is using body housing as earth terminal.
- 4. core-theaded type power-supply filter according to claim 3, it is characterised in thatThe inductance is two, and respectively the first inductance, the second inductance；The ground capacity is three, and respectively the first ground capacity, the second ground capacity and the 3rd ground capacity；WhereinThe connection that the left end of the screw rod right-hand member and the first inductance of one end of first ground capacity and the feed-through capacitor of end of incoming cables is formed Point is connected, its other end and cage connection；One end of second ground capacity is connected with the tie point of first, second inductance, and its other end connects with body housing Connect；The connection that the screw rod left end of the right-hand member of one end of 3rd electric capacity and second inductance and the feed-through capacitor of leading-out terminal is formed Point is connected, its other end and cage connection；Form pi-network structure.
- 5. according to the core-theaded type power-supply filter described in claim any one of 2-4, it is characterised in thatThe feed-through capacitor is suitable to be assemblied in respective diaphragms by mounting assembly.
- 6. core-theaded type power-supply filter according to claim 5, it is characterised in thatThe mounting assembly includes：A pair of fasteners；The pair of fastener includes：Brass bolt, the brass bolt are suitable to penetrate from the first end of feed-through capacitor, and electric from punching The second end held is passed, and feed-through capacitor is fastened in respective diaphragms by copper nut component；AndThe brass bolt is further adapted for a binding post being fastened at the first end of feed-through capacitor；Another binding post is fastened at copper nut component.
- 7. core-theaded type power-supply filter according to claim 6, it is characterised in thatOn the inside of dividing plate insulating washer is provided between copper nut component.
- 8. a kind of screened room, it is characterised in that the screened room is suitable to punching of the assembling described in just like claim any one of 1-7 Formula power-supply filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984259.8A CN107681989A (en) | 2017-10-20 | 2017-10-20 | Feed-through capacitor formula power-supply filter and screened room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984259.8A CN107681989A (en) | 2017-10-20 | 2017-10-20 | Feed-through capacitor formula power-supply filter and screened room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107681989A true CN107681989A (en) | 2018-02-09 |
Family
ID=61141127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710984259.8A Pending CN107681989A (en) | 2017-10-20 | 2017-10-20 | Feed-through capacitor formula power-supply filter and screened room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107681989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445473A (en) * | 2019-08-27 | 2019-11-12 | 江苏沃姆克科技有限公司 | A kind of EMP power-supply filter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004021567A1 (en) * | 2002-08-30 | 2004-03-11 | Epcos Ag | Feedthrough component, filter circuit provided with the feedthrough component, and shielding wall for shielded spaces |
| KR101229409B1 (en) * | 2012-12-03 | 2013-02-05 | 대한실드엔지니어링(주) | R.f filter for shield room |
| CN204498078U (en) * | 2015-04-17 | 2015-07-22 | 梁玉成 | Ultra broadband shielded enclosure power-supply filter |
| JP2017077132A (en) * | 2015-10-16 | 2017-04-20 | 双信電機株式会社 | Noise filter device and power supply line filter device |
| CN206412991U (en) * | 2016-12-31 | 2017-08-15 | 陕西烽火电子股份有限公司 | A kind of Big Dipper intermediate frequency 46.52MHz bandpass filters |
| CN207382271U (en) * | 2017-10-20 | 2018-05-18 | 江苏瑞牧电子科技有限公司 | Feed-through capacitor formula power-supply filter and screened room |
-
2017
- 2017-10-20 CN CN201710984259.8A patent/CN107681989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004021567A1 (en) * | 2002-08-30 | 2004-03-11 | Epcos Ag | Feedthrough component, filter circuit provided with the feedthrough component, and shielding wall for shielded spaces |
| KR101229409B1 (en) * | 2012-12-03 | 2013-02-05 | 대한실드엔지니어링(주) | R.f filter for shield room |
| CN204498078U (en) * | 2015-04-17 | 2015-07-22 | 梁玉成 | Ultra broadband shielded enclosure power-supply filter |
| JP2017077132A (en) * | 2015-10-16 | 2017-04-20 | 双信電機株式会社 | Noise filter device and power supply line filter device |
| CN206412991U (en) * | 2016-12-31 | 2017-08-15 | 陕西烽火电子股份有限公司 | A kind of Big Dipper intermediate frequency 46.52MHz bandpass filters |
| CN207382271U (en) * | 2017-10-20 | 2018-05-18 | 江苏瑞牧电子科技有限公司 | Feed-through capacitor formula power-supply filter and screened room |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445473A (en) * | 2019-08-27 | 2019-11-12 | 江苏沃姆克科技有限公司 | A kind of EMP power-supply filter |
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