CN2874739Y - Core through capacitor - Google Patents
Core through capacitor Download PDFInfo
- Publication number
- CN2874739Y CN2874739Y CN 200520048030 CN200520048030U CN2874739Y CN 2874739 Y CN2874739 Y CN 2874739Y CN 200520048030 CN200520048030 CN 200520048030 CN 200520048030 U CN200520048030 U CN 200520048030U CN 2874739 Y CN2874739 Y CN 2874739Y
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- capacitor
- core group
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- model
- feed
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- Expired - Fee Related
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Abstract
The utility model discloses a feed-through capacitor to lower RF interference, which comprises a core group, a nut and a washer. Internal and external threads of lining of core in the core group are positioned and pressed tightly with bolts and nuts, and the center is transited with copper wire net. The core group is sleeved with aluminium drum housing outside. The utility model is characterized in low inductance, high insulating resistor, and stable capacitance and has both perfect self-healing performance and excellent AC ampersand DC performances. The utility model has the advantages of low loss angle tangent value, stable performances, perfect conductive performances, and excellent ductility, for which it can match main frame tightly.
Description
Technical field
The utility model relates to the manufacturing field of electronics with components and parts, is specifically related to a kind of feed-through capacitor that reduces radio frequency interference.
Background technology
Raising along with the electronic equipment complexity, strong and weak electricity mixes installation in the equipment, it is more and more that Digital Logical Circuits is mixed the situation of installing, phase mutual interference between the circuit module becomes serious and problem that need solve, must adopt the EMI countermeasure element of some suitable anti-electromagnetic interference in product design, feed-through capacitor can solve the above-mentioned problem of disturbing each other for this reason.The filtering capacitor of at present general type is filter away high frequency noise effectively, causes capacitor resonance mainly due to the capacitor lead wire inductance, and high-frequency signal is presented bigger impedance, has weakened the effect to high-frequency signal; Be because the parasitic capacitance between the capacitor lead is coupled high-frequency signal in addition, reduced filter effect, and feed-through capacitor why effectively filter away high frequency noise be because feedthrough capacitor not only do not have lead-in inductance to cause the problem of capacitor resonance underfrequency, and can be directly installed on the machine plate, utilize metal decking to play the function of high-frequency isolation effect.
Present domestic existing feed-through capacitor, main feature is: first kind, adopt metallized polypropylene film to make medium, the fuse that no-induction is reeled, the copper bar that employing " welding " mode is about to punching directly and the fuse end face weld, assemble.Its characteristics: contact is good, but the film fuse easy damaged lower to heatproof is applicable to and draws the not thick copper bar of lead, the feed-through capacitor that its ampacity is little.Second kind is that to adopt " hang and connect " mode be that fuse directly hangs jail and tight with conductive lever, nut, and parts are fairly simple in addition for this structure, mainly be contact unreliable.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of reasonable in design, can effectively improve the filtering that suppresses electromagnetic interference, the feed-through capacitor of bypass harmonic component ability.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of feed-through capacitor, comprise core group, nut, packing ring, and the fuse of described core group, its lining ring internal and external threads is located and compressed with screw rod, nut, and is middle with the copper mesh transition.The core group is added with the aluminum barrel shell outward.
The utility model inductance value is little, the insulation resistance height, and capacitance is stable, not only have good self-healing performance, and the alternating current-direct current performance is good, and loss tangent is little, stable performance.Adopt the aluminum barrel shell, reduced contact resistance, technology is simple, and conduct electricity very well, elongation is good, can closely cooperate with body frame.The Al that case surface generates
2O
3The surface can be protected, coating must be do not added in addition.Be subjected to the influence of weather, environment, mechanical factor after packaged perfusion can prevent to encapsulate and produce the crack.
Description of drawings
Fig. 1 is a core group schematic diagram of the present utility model.
Fig. 2 is an assembling schematic diagram of the present utility model.
Embodiment
A kind of feed-through capacitor comprises core group 8, nut 9, packing ring 10, the fuse 1 of described core group, and its lining ring internal and external threads is located and compressed with screw rod 2, nut 3, and is middle with copper mesh 4,5 transition.The core group is added with aluminum barrel shell 6 outward.Perfusion material packed layer 7 is arranged between described core group and shell.
The product of the utility model feed-through capacitor adopts " crimping " mode structure, by metallized polypropylene film is medium, no-induction is reeled, adopt copper screw bolt to make interior electrode, the combination of punching core group, make the external electrode of capacitor with aluminum barrel, epoxy resin is made the perfusion material and is realized that the coupling of core group and shell is combined into feed-through capacitor.
1. feed-through capacitor core group: metallized polypropylene film is a medium, and no-induction is reeled, and fuse 1 lining ring internal and external threads is with screw rod 2, nut 3 location and compress, middle with copper mesh 4,5 transition, controls the safe carrying capacity size with the copper screw bolt diameter.
2. aluminum barrel 6 is as the shell electrode: have conduct electricity very well, elongation is good, can closely cooperate with body frame, reduces contact resistance, technology is simple, the Al that the aluminum barrel surface generates
2O
3The surface can be protected, coating must be do not added in addition.
3. for preventing weather, environment, mechanical factor influence, adopt the encapsulation of perfusion material, guaranteed that electrical performance indexes reaches requirement.
The utility model meets modularization and integrated trend.Because adopt the metallized polypropylene material, advanced technologies and structural design are innovated optimization, make on the product technology performance to be greatly improved.This product inductance value is little, the insulation resistance height, and capacitance is stable, not only have good self-healing performance, and the alternating current-direct current performance is good, and loss tangent is little, stable performance.Solved use ordinary capacitor indeterminable problem in High frequency filter.Because this product adopts the integrated structure of special process combination, its compact conformation, high conformity can be used in high pass, low pass, band pass filter, its scope of application extensively relates to electronics industries such as instrument and meter, communication, automatic control, and market prospects are preferably arranged.
These properties of product reach the requirement of GB/10190-88 (IEC384-16) standard.
Claims (2)
1. a feed-through capacitor comprises core group, nut, packing ring, it is characterized in that: the fuse of described core group, its lining ring internal and external threads is located and compressed with screw rod, nut, and is middle with the copper mesh transition.
2. feed-through capacitor as claimed in claim 1 is characterized in that: the core group is added with the aluminum barrel shell outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520048030 CN2874739Y (en) | 2005-12-27 | 2005-12-27 | Core through capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520048030 CN2874739Y (en) | 2005-12-27 | 2005-12-27 | Core through capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874739Y true CN2874739Y (en) | 2007-02-28 |
Family
ID=37781335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520048030 Expired - Fee Related CN2874739Y (en) | 2005-12-27 | 2005-12-27 | Core through capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874739Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412804A (en) * | 2011-10-27 | 2012-04-11 | 成都宏明电子股份有限公司 | Crimping feed-through filter |
-
2005
- 2005-12-27 CN CN 200520048030 patent/CN2874739Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412804A (en) * | 2011-10-27 | 2012-04-11 | 成都宏明电子股份有限公司 | Crimping feed-through filter |
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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: 20070228 Termination date: 20100127 |