CN203775154U - Through-type filter - Google Patents
Through-type filter Download PDFInfo
- Publication number
- CN203775154U CN203775154U CN201420011442.1U CN201420011442U CN203775154U CN 203775154 U CN203775154 U CN 203775154U CN 201420011442 U CN201420011442 U CN 201420011442U CN 203775154 U CN203775154 U CN 203775154U
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- China
- Prior art keywords
- capacitor
- punching
- current
- voltage
- filter
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- Expired - Lifetime
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- 239000003990 capacitor Substances 0.000 claims abstract description 47
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000004080 punching Methods 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 8
- 239000002356 single layer Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
- Filters And Equalizers (AREA)
Abstract
The utility model discloses a through-type filter, which comprises a capacitor filter circuit. The capacitor filter circuit comprises a capacitor and an insulation resistor in parallel connection, and an inductor and a resistor in serial connection. The inductor and the resistor in serial connection are connected with the capacitor and the insulation resistor in parallel connection. The capacitor is a through capacitor. According to the through-type filter, voltage and current of through-type filter products are improved, radiation interference of a high-voltage and large-current cable can be effectively controlled, interference control on high-voltage and large-current power signals can be realized, and a crucial role is played on electromagnetic compatibility of the overall machine.
Description
Technical field
The utility model relates to a kind of filter, is specifically related to a kind of punching high voltage, large current filter.
Background technology
Conventional filtering product wants the insertion loss that reaches good, is easy to realize.But this only limits to little electric current, low withstand voltage power supply signal.In filter, capacitor filtering circuit can represent with the equivalent electric circuit of capacitor.C is electric capacity, and Ri is insulation resistance, and electric capacity and insulation resistance are in parallel, and ESL is equivalent series inductance, and ESR is equivalent series resistance, and series inductance is connected with insulation resistance with electric capacity in parallel with after series resistance series connection.The whole impedance of capacitor can be got by formula (2).
In formula (2),
Because the High frequency filter of equipment is to utilize the electric capacity in filter circuit to provide low pass loop that interference signal is coupled to large ground, so selected electric capacity is must impedance very little.Known according to formula (2), make the impedance of electric capacity very littlely just must meet ESR, ESL is very little.
Utility model content
The utility model has overcome the deficiencies in the prior art, and provide a kind of and solve the voltage and current that improves punching filtering product, thus the punching filter that the radiated interference of high voltage, high-current cable is controlled effectively.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A punching filter, comprises capacitor filtering circuit, and described capacitor filtering circuit comprises capacitor in parallel and insulation resistance, and inductance and the resistance of series connection; The inductance of described series connection is connected with insulation resistance with the capacitor of described parallel connection with resistance; Described capacitor is feed-through capacitor.
Further technical scheme is that feed-through capacitor is the sheets type ceramic dielectric capacitor of punching structure.
Further technical scheme is that feed-through capacitor is punching disc type capacitor.
Further technical scheme is that punching disc type capacitor is the single layer structure that a plurality of independent capacitance devices form, and the capacitor of described single layer structure is the single layer structure punching disc type capacitor of processing through differential.
Compared with prior art, the beneficial effects of the utility model are: the utility model punching filter, improves the voltage and current of punching filtering product, thereby the radiated interference of high voltage, high-current cable is controlled effectively; Thereby realize, the interference of high voltage, large-current electric source signal is controlled, the Electro Magnetic Compatibility of complete machine has been played to vital effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, Fig. 1 shows the structural representation of an embodiment of the utility model.The open punching filter of the present embodiment, comprises capacitor filtering circuit, and capacitor filtering circuit available equivalents circuit represents, as capacitor filtering circuit comprises capacitor in parallel and insulation resistance, and inductance and the resistance of series connection; The inductance of series connection is connected with insulation resistance with capacitor in parallel with resistance; As preferred embodiment, in the present embodiment, capacitor is feed-through capacitor.Specific embodiment is, adopts sheets type ceramic dielectric capacitor to change over the structure of punching in the present embodiment, thereby realizes the filtering product of the punching structure of our required high pressure, large electric current.Feed-through capacitor is punching disc type capacitor, preferred embodiment is, the present embodiment is made single layer structure by this punching structure, single layer structure is carried out to differential processing, and whole punching is to consist of separately countless independent capacitance devices, disc type punching structure filtering product can consist of n Δ c, and rated capacitance can be represented by formula (3):
When the value of n changes, now the frequency impedance curve of filter is ensued variation.Along with the increase of n, frequency impedance curve more approaches theoretical value curve, and when n → ∞, curve and theoretical value deviation are less, substantially overlaps.Can realize the diversity that disc type feed-through capacitor forms, increase proof voltage and the electric current of product, meet the requirement of piggyback pod high voltage and large electric current.As shown in Figure 1, punching high voltage, large current filter are installed on punching on power line by the pattern of wire clamp, open bayonet socket 4, interior electrode 1 is fixed on above power line current-carrying fuse, then bayonet socket 4 is pinned, in guaranteeing, electrode 1 is connected closely with power supply current-carrying fuse, and external electrode 2 is connected and carries out ground connection with the anti-ripple cover of power line.Between interior electrode and external electrode, by differential, process, be provided with the sheets type ceramic dielectric capacitor 3 of a plurality of high voltage through type structures.By this structure, just can well the High-frequency Interference on power line be filtered out.The concrete size of punching can be determined according to the model of power line.The present embodiment is realized the interference of high voltage, large-current electric source signal is controlled, and the Electro Magnetic Compatibility of complete machine has been played to vital effect.
" embodiment " that spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the feature in conjunction with this embodiment, described and be included at least one embodiment that the application's generality describes.In specification, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with any embodiment, what advocate is in conjunction with other embodiment, to realize this feature, structure or feature also to drop in scope of the present utility model.
Although a plurality of explanatory embodiment with reference to utility model is described the utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and within execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (4)
1. a punching filter, comprises capacitor filtering circuit, and described capacitor filtering circuit comprises capacitor in parallel and insulation resistance, and inductance and the resistance of series connection; The inductance of described series connection is connected with insulation resistance with the capacitor of described parallel connection with resistance; It is characterized in that: described capacitor is feed-through capacitor.
2. punching filter according to claim 1, is characterized in that described feed-through capacitor is the sheets type ceramic dielectric capacitor of punching structure.
3. punching filter according to claim 1, is characterized in that described feed-through capacitor is punching disc type capacitor.
4. punching filter according to claim 3, is characterized in that described punching disc type capacitor is the single layer structure that a plurality of independent capacitance devices form, and the capacitor of described single layer structure is the single layer structure punching disc type capacitor of processing through differential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011442.1U CN203775154U (en) | 2014-01-08 | 2014-01-08 | Through-type filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011442.1U CN203775154U (en) | 2014-01-08 | 2014-01-08 | Through-type filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775154U true CN203775154U (en) | 2014-08-13 |
Family
ID=51292299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420011442.1U Expired - Lifetime CN203775154U (en) | 2014-01-08 | 2014-01-08 | Through-type filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953802A (en) * | 2015-06-16 | 2015-09-30 | 联合汽车电子有限公司 | Electromagnetic compatibility filter |
-
2014
- 2014-01-08 CN CN201420011442.1U patent/CN203775154U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953802A (en) * | 2015-06-16 | 2015-09-30 | 联合汽车电子有限公司 | Electromagnetic compatibility filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |