CN205490446U - Electromagnetic pulse protection filter - Google Patents
Electromagnetic pulse protection filter Download PDFInfo
- Publication number
- CN205490446U CN205490446U CN201620262456.XU CN201620262456U CN205490446U CN 205490446 U CN205490446 U CN 205490446U CN 201620262456 U CN201620262456 U CN 201620262456U CN 205490446 U CN205490446 U CN 205490446U
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- differential mode
- common mode
- separation
- capacitance
- varistor
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Abstract
The utility model relates to an electromagnetic pulse protection filter, including input, output, a piezo -resistor, the 2nd piezo -resistor, gas discharge tube, first common mode electric capacity, second common mode electric capacity, third common mode electric capacity, fourth common mode electric capacity, a differential mode choke, the 2nd differential mode choke and the 3rd differential mode choke, input, a differential mode choke, the 2nd differential mode choke, the 3rd differential mode choke and output are established ties in proper order, and first common mode capacitance parallel connection is at the input, and second common mode capacitance parallel connection is between a differential mode choke and the 2nd differential mode choke, and third common mode capacitance parallel connection is between the 2nd differential mode choke and the 3rd differential mode choke, and fourth common mode capacitance parallel connection is at the output, the circuit that still connects in parallel and have a piezo -resistor and gas discharge tube to establish ties on the input, it has the 2nd piezo -resistor still to connect in parallel on the output. The utility model has the characteristics of prevent that the electric current from leaking, parasitic capacitance is little, is favorable to protecting the sub - circuit of high frequency electric etc.
Description
Technical field
This utility model relates to electromagnetic pulse protection technology field, particularly to Spark gap wave filter.
Background technology
Wave filter is a kind of frequency selective device, and specific frequency content in signal can be made to pass through, and other frequency content that greatly decays.In test device, utilize this frequency-selecting effect of wave filter, can be with filtering interfering noise or carry out spectrum analysis.Traditional Spark gap wave filter only uses single-stage varistor to protect, and only uses varistor, and it has bigger leakage current；Parasitic capacitance is relatively big, is unfavorable for the protection to High-Frenquency Electronic Circuit.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide one and prevents current leakage, and parasitic capacitance is little, is conducive to protecting the Spark gap wave filter of High-Frenquency Electronic Circuit.
Realize the technical solution of the utility model as follows:
Spark gap wave filter, including input, outfan, first varistor, second varistor, gas-discharge tube, first common mode capacitance, second common mode capacitance, 3rd common mode capacitance, 4th common mode capacitance, first differential mode inductance, second differential mode inductance and the 3rd differential mode inductance, described input, first differential mode inductance, second differential mode inductance, 3rd differential mode inductance and outfan are sequentially connected in series, first common mode capacitance is connected in parallel on input, second common mode capacitance is connected in parallel between the first differential mode inductance and the second differential mode inductance, 3rd common mode capacitance is connected in parallel between the second differential mode inductance and the 3rd differential mode inductance, 4th common mode capacitance is connected in parallel on outfan, the circuit that the first varistor is connected also it is parallel with gas-discharge tube on described input, the second varistor also it is parallel with on outfan.
Further, the first varistor, the second varistor being in series with electric fuse respectively, this electric fuse includes overcurrent fuse and Thermal Cutoffs.
Further, also include the housing encapsulating wave filter, enclosure interior is provided with separate the first separation, the second separation, the 3rd separation, the 4th separation and the 5th separation, input is arranged in the first separation, outfan is arranged in the 5th separation, first varistor and gas-discharge tube are arranged in the second separation, second varistor is arranged in the 4th separation, and the first common mode capacitance, the second common mode capacitance, the 3rd common mode capacitance, the 4th common mode capacitance, the first differential mode inductance, the second differential mode inductance and the 3rd differential mode inductance are arranged in the 3rd separation.
Have employed above-mentioned scheme, at input parallel connection varistor TVR1 and the series circuit of gas-discharge tube of Spark gap wave filter, carry out Spark gap；Decay through high performance power-supply filter (7 rank Chebyshev's LC wave filter that 4 common mode capacitance form with 3 differential mode inductances) again；The last cascade form that varistor TVR2 in parallel finally protects again.Used by connection in series-parallel, the mode that interfering energy is successively decreased step by step, the electromagnetic pulse Conduction Interference of low frequency tremendously high frequency on effective suppression power line.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is the structural representation of this utility model housing；
In accompanying drawing, 1 is input, and 2 is outfan, 3 is the first varistor, and 4 is the second varistor, and 5 is gas-discharge tube, 6 is the first common mode capacitance, 7 is the second common mode capacitance, and 8 is the 3rd common mode capacitance, and 9 is the 4th common mode capacitance, 10 is the first differential mode inductance, 11 is the second differential mode inductance, and 12 is the 3rd differential mode inductance, and 13 is electric fuse, 14 is housing, 15 is screw rod, and 16 for sealing ceramic bead, and 141 is the first separation, 142 is the second separation, 143 is the 3rd separation, and 144 is the 4th separation, and 145 is the 5th separation.
Detailed description of the invention
With specific embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
nullSuch as Fig. 1 and Fig. 2，Spark gap wave filter，Including input 1、Outfan 2、First varistor 3、Second varistor 4、Gas-discharge tube 5、First common mode capacitance 6、Second common mode capacitance 7、3rd common mode capacitance 8、4th common mode capacitance 9、First differential mode inductance 10、Second differential mode inductance 11 and the 3rd differential mode inductance 12，Described input 1、First differential mode inductance 10、Second differential mode inductance 11、3rd differential mode inductance 12 and outfan 2 are sequentially connected in series，First common mode capacitance 6 is connected in parallel on input 1，Second common mode capacitance 7 is connected in parallel between the first differential mode inductance 10 and the second differential mode inductance 11，3rd common mode electricity 8 appearance is connected in parallel between the second differential mode inductance 11 and the 3rd differential mode inductance 12，4th common mode capacitance 9 is connected in parallel on outfan 2，The circuit that the first varistor 3 is connected also it is parallel with gas-discharge tube 5 on described input 1，The second varistor 4 also it is parallel with on outfan 2.
Being in series with electric fuse 13 respectively on described first varistor the 3, second varistor 4, this electric fuse includes overcurrent fuse and Thermal Cutoffs.
Also include the housing 14 encapsulating wave filter, housing 14 is internal is provided with the first separate separation 141, second separation 142, 3rd separation 143, 4th separation 144 and the 5th separation 145, input is arranged in the first separation, outfan is arranged in the 5th separation, first varistor and gas-discharge tube are arranged in the second separation, second varistor is arranged in the 4th separation, first common mode capacitance, second common mode capacitance, 3rd common mode capacitance, 4th common mode capacitance, first differential mode inductance, second differential mode inductance and the 3rd differential mode inductance are arranged in the 3rd separation, described first common mode capacitance is connected by screw rod 15 with the second separation, 4th common mode capacitance is connected also by screw rod with the 4th separation, outfan and the first separation, connected by sealing ceramic bead 16 between outfan and the 5th separation.
It also have the advantage that
Use TVR1 and gas-discharge tube to be used in series and 7 rank Chebyshev's LC filter combination technology of 4 common mode capacitance with 3 differential mode inductance compositions, solve wide-band high energy pulse suppression problem；
2, using use varistor and gas-discharge tube to be used in series the novel anti-impulse circuit integrated mode of composition, the advantage of gas-discharge tube is that electricity flow capacity is big；Parasitic capacitance is little；Residual voltage is relatively low, solves the overvoltage problem produced when in the past using single element manipulation, and arranged stream and temperature protection.
A, shell use electroplating surfaces with tin technique.On the one hand meet the situation that environment uses, strengthen its pitting corrosion resistance, high temperature resistant, creep-resistant property, on the other hand strengthen its conductive contact ability, reduce contact resistance.
B, using many compartment structures, outfan uses screw attachment structure, it is ensured that it shields reliability for high-frequency signal.
C, the internal end using feedthrough class capacitance component, i.e. electric capacity are connected in electrical network, and one end is directly welded on shell, and contact area is big, and contact resistance is little, reduces High-frequency Interference, prevents the coupling of high-frequency energy.
The internal structure design of product is more reasonable, sufficiently make use of middle three separations, and use three separations and the mentality of designing of screw rod connected mode, input and guarantee that wave filter has, in whole suppression frequency range, the shielding properties that refinery is good with output with two independent separations spaced apart from each other, the connected mode of screw rod is easy for installation, improves while work efficiency it is also contemplated that the overall shielding of wave filter and sealing.
Claims (3)
1. Spark gap wave filter, including input, outfan, the first varistor, the second pressure
Quick resistance, gas-discharge tube, the first common mode capacitance, the second common mode capacitance, the 3rd common mode capacitance, the 4th
Common mode capacitance, the first differential mode inductance, the second differential mode inductance and the 3rd differential mode inductance, it is characterised in that: institute
State input, the first differential mode inductance, the second differential mode inductance, the 3rd differential mode inductance and outfan to be sequentially connected in series,
First common mode capacitance is connected in parallel on input, and the second common mode capacitance is connected in parallel on the first differential mode inductance and the second differential mode
Between inductance, the 3rd common mode capacitance is connected in parallel between the second differential mode inductance and the 3rd differential mode inductance, and the 4th altogether
Mould electric capacity is connected in parallel on outfan, and described input is also parallel with the first varistor and gas-discharge tube string
The circuit of connection, outfan is also parallel with the second varistor.
Spark gap wave filter the most according to claim 1, it is characterised in that: described first
Be in series with electric fuse respectively on varistor, the second varistor, this electric fuse include overcurrent fuse and
Thermal Cutoffs.
Spark gap wave filter the most according to claim 1, it is characterised in that: also include envelope
The housing of dress wave filter, enclosure interior be provided with separate the first separation, the second separation, the 3rd separation,
4th separation and the 5th separation, input is arranged in the first separation, and outfan is arranged in the 5th separation,
First varistor and gas-discharge tube are arranged in the second separation, the second varistor be arranged on the 4th every
In cabin, the first common mode capacitance, the second common mode capacitance, the 3rd common mode capacitance, the 4th common mode capacitance, first
Differential mode inductance, the second differential mode inductance and the 3rd differential mode inductance are arranged in the 3rd separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262456.XU CN205490446U (en) | 2016-03-31 | 2016-03-31 | Electromagnetic pulse protection filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262456.XU CN205490446U (en) | 2016-03-31 | 2016-03-31 | Electromagnetic pulse protection filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490446U true CN205490446U (en) | 2016-08-17 |
Family
ID=56646178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620262456.XU Expired - Fee Related CN205490446U (en) | 2016-03-31 | 2016-03-31 | Electromagnetic pulse protection filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490446U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245517A (en) * | 2018-11-27 | 2019-01-18 | 中国人民解放军军事科学院国防工程研究院 | A kind of quick response high-power broadband tempest integrated power supply protective device |
| EP3487023A1 (en) * | 2017-11-17 | 2019-05-22 | Pegatron Corporation | Filter circuit |
-
2016
- 2016-03-31 CN CN201620262456.XU patent/CN205490446U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3487023A1 (en) * | 2017-11-17 | 2019-05-22 | Pegatron Corporation | Filter circuit |
| CN109802653A (en) * | 2017-11-17 | 2019-05-24 | 和硕联合科技股份有限公司 | Filter circuit |
| CN109245517A (en) * | 2018-11-27 | 2019-01-18 | 中国人民解放军军事科学院国防工程研究院 | A kind of quick response high-power broadband tempest integrated power supply protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |