CN218416189U - Anti-electromagnetic interference high-voltage filter - Google Patents
Anti-electromagnetic interference high-voltage filter Download PDFInfo
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- CN218416189U CN218416189U CN202220390523.1U CN202220390523U CN218416189U CN 218416189 U CN218416189 U CN 218416189U CN 202220390523 U CN202220390523 U CN 202220390523U CN 218416189 U CN218416189 U CN 218416189U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses an anti-electromagnetic interference high-voltage filter, which is configured with a differential mode suppression network for suppressing interference information of a first frequency band, and comprises a differential mode device; a common mode rejection network for rejecting a second frequency band interference signal and a third frequency band interference signal includes a common mode device. The high-voltage filter is expanded by combining a plurality of circuits, so that the filtering range of the anti-electromagnetic interference filter circuit is obviously improved compared with that of a common filter circuit, the suppression of frequencies in different frequency bands is realized, the filtering capability is improved, and the problem of improving the survival capability of equipment in a complex electromagnetic environment in a limited space of the equipment is solved.
Description
Technical Field
The utility model belongs to the wave filter field especially relates to an anti-electromagnetic interference high voltage filter.
Background
With the continuous development of military and scientific and technological levels in China, the requirements on the size of the space of equipment and the performance of the equipment are higher and higher, and in order to improve the using capacity of the 1um solid laser in a complex electromagnetic environment, the anti-electromagnetic interference efficiency of the 1um solid laser is more and more emphasized on a military platform. In the prior art, due to the particularity of 1um solid laser optical signals and 3500VDC high voltage, a high-voltage filter is relatively large in size, and under the condition of limited equipment space, if the filter is not added, test items such as CE102, RE102, CS114, CS115 and CS116 in GJB151B-2013 electromagnetic emission and sensitivity requirements of military equipment and subsystems cannot be met; therefore, the method has important significance for improving the survival capability of the equipment in the complex electromagnetic environment in the limited space of the equipment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide an anti-electromagnetic interference high voltage filter, this wave filter effectively solves improve equipment viability in complicated electromagnetic environment in the limited space of equipment.
For this reason, the utility model provides an anti-electromagnetic interference high voltage filter is configured:
the differential mode suppression network is used for suppressing the interference information of the first frequency band and comprises a differential mode device;
the common mode rejection network is used for rejecting a second frequency band interference signal and a third frequency band interference signal and comprises a common mode device;
the third frequency band frequency range is greater than the second frequency band frequency range and greater than the first frequency band frequency range.
In some embodiments, the differential mode suppression network includes a differential mode inductance L1, a differential mode inductance L2, and a differential mode capacitance CX1.
In some embodiments, the common mode rejection network includes a common mode inductor L3 for rejecting the second frequency band interference signal, and a common mode capacitor CY1 and a common mode capacitor CY2 for rejecting the third frequency band interference signal.
In some embodiments, the common mode rejection network further includes a common mode capacitance CY3 and a common mode capacitance CY4.
In some embodiments, the filter includes a housing and a connection terminal mounted on the housing, and the differential mode rejection network and the common mode rejection network are disposed inside the housing and connected to an external device through the connection terminal.
In some embodiments, the filter is connected with the 1um solid laser for resisting electromagnetic interference of the 1um solid laser.
The utility model provides another kind of structure of anti-electromagnetic interference high-voltage filter is configured:
the differential mode suppression network is used for suppressing the interference information of the first frequency band and comprises a differential mode capacitor CX1, a differential mode inductor L1 and a differential mode inductor L2;
the common mode rejection network is used for rejecting a second frequency band interference signal and a third frequency band interference signal, and comprises a common mode inductor L3 used for rejecting the second frequency band interference signal, and a common mode capacitor CY1 and a common mode capacitor CY2 used for rejecting the third frequency band interference signal;
one end of the differential mode inductor L1 and one end of the differential mode inductor L2 are respectively used as an input end Pi and an input end Ni, the other end of the differential mode inductor L1 and the other end of the differential mode inductor L2 are respectively connected with the input end of a common mode inductor L3, and two ends of the differential mode capacitor CX1 are respectively connected with the output end of the common mode inductor L3; the common mode capacitor CY1 is connected in series between one end of the differential mode inductor L1 connected with the common mode inductor L3 and circuit ground, and the common mode capacitor CY2 is connected in series between one end of the differential mode inductor L2 connected with the common mode inductor L3 and circuit ground; the output end of the common mode inductor L3 is used as the output end Po and the output end No of the filter;
the third frequency band frequency range is greater than the second frequency band frequency range and greater than the first frequency band frequency range.
The utility model discloses an intentional effect is: the high-voltage filter is expanded by combining a plurality of circuits, so that the filtering range of the anti-electromagnetic interference filter circuit is obviously improved compared with that of a common filter circuit, the suppression of frequencies of different frequency bands is realized, the filtering capability is improved, and the problem of improving the survival capability of equipment in a complex electromagnetic environment in a limited space of the equipment is solved.
The high-voltage filter has the characteristics of integration, miniaturization, high reliability, outstanding filtering performance and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic circuit diagram of a high-voltage filter provided by the present invention;
fig. 2-6 are external views of the high voltage filter provided by the present invention;
in the drawings: 1-shell, 2-connection end.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
The utility model provides an expand by the combination of multipart circuit and make the more ordinary filter circuit filtering range of anti-electromagnetic interference have anti-electromagnetic interference high voltage filter of obvious promotion. The high voltage filter is configured with a differential mode suppression network for suppressing interference information of a first frequency band, comprising a differential mode device; the common mode rejection network used for rejecting the second frequency band interference signal and the third frequency band interference signal comprises a common mode device.
The anti-electromagnetic interference mainly has the functions of filtering the electromagnetic interference inside the equipment, preventing the electromagnetic interference from radiating and emitting to the outside and preventing the external electromagnetic interference from passing through. The high-voltage filter mainly meets the requirement of wide-range electromagnetic filtering, and the differential mode suppression network mainly suppresses low interference signals and is mainly between dozens of hertz and hundreds of megahertz; the common mode rejection network rejects interference signals from hundreds of kilohertz to hundreds of megahertz through network matching combination, and can extend the rejection frequency range to 18GHz.
Referring to fig. 1, the differential mode suppression network herein includes a differential mode capacitance CX1, a differential mode inductance L1, and a differential mode inductance L2; the common mode rejection network comprises a common mode inductor L3, a common mode capacitor CY1 and a common mode capacitor CY2. The connections of the devices are such that: one end of a differential mode inductor L1 and one end of a differential mode inductor L2 are respectively used as an input end Pi and an input end Ni, the other end of the differential mode inductor L1 and the other end of the differential mode inductor L2 are respectively connected with an input end of a common mode inductor L3, and two ends of a differential mode capacitor CX1 are respectively connected with an output end of the common mode inductor L3; the common-mode capacitor CY1 is connected in series between one end of the differential-mode inductor L1 connected with the common-mode inductor L3 and the circuit ground, and the common-mode capacitor CY2 is connected in series between one end of the differential-mode inductor L2 connected with the common-mode inductor L3 and the circuit ground; the output terminal of the common mode inductor L3 serves as the output terminal Po and the output terminal No of the filter.
On the basis of the technical scheme, the common mode rejection network further comprises a common mode capacitor CY3 and a common mode capacitor CY4 which are respectively connected in series between the output end of the common mode inductor L3 and the circuit ground.
The common mode capacitors CY1, CY2, CY3, CY4 herein are high voltage filter devices.
Referring to fig. 2 to 6, the high voltage filter provided herein includes a housing 1 and a connection terminal 2 mounted on the housing 1 for connecting input/output terminals of a circuit, and a differential mode rejection network and a common mode rejection network are arranged inside the housing and connected to an external device through the connection terminal 2.
The high-voltage filter provided by the invention can be connected with any equipment for use so as to realize the suppression of external complex electromagnetic interference. The electromagnetic interference suppression filter is used for 1um solid laser equipment to suppress external complex electromagnetic interference, meets the test project requirements of CE102, RE102, CS114, CS115, CS116 and the like in GJB151B-2013 military equipment and subsystem electromagnetic emission and sensitivity requirements, and has the characteristics of integration, miniaturization, high reliability, outstanding filtering performance and the like. When the high-voltage filter is configured for a 1um solid laser, the high-voltage filter mainly meets wide-range electromagnetic filtering, firstly, the differential mode inductor L1, the differential mode inductor L2 and the differential mode capacitor CX1 are mainly used for restraining low interference signals, mainly between dozens of hertz and hundreds of megahertz, and mainly aiming at CE102 test items. Secondly, the common mode inductor L3 restrains interference signals from hundreds of kilohertz to hundreds of megahertz through network matching combination, and mainly aims at CS114, CS115 and CS116 test items. And finally, the rejection frequency range is extended to 18GHz through the high-frequency filter capacitor common-mode capacitor CY1 and the common-mode capacitor CY2, and the RE102 test project is mainly aimed at. The filtering range of the anti-electromagnetic interference filter circuit is obviously improved compared with that of a common filter circuit by combining and expanding a plurality of circuits.
The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications may be made without departing from the spirit and scope of the disclosure, which should be determined from the substance of the claims that follow.
Claims (3)
1. An anti-electromagnetic interference high voltage filter, characterized in that the filter is configured with: the differential mode suppression network is used for suppressing the interference information of the first frequency band and comprises a differential mode capacitor CX1, a differential mode inductor L1 and a differential mode inductor L2;
the common mode rejection network is used for rejecting a second frequency band interference signal and a third frequency band interference signal, and comprises a common mode inductor L3 used for rejecting the second frequency band interference signal, and a common mode capacitor CY1 and a common mode capacitor CY2 used for rejecting the third frequency band interference signal;
one end of the differential mode inductor L1 and one end of the differential mode inductor L2 are respectively used as an input end Pi and an input end Ni, the other end of the differential mode inductor L1 and the other end of the differential mode inductor L2 are respectively connected with an input end of a common mode inductor L3, and two ends of the differential mode capacitor CX1 are respectively connected with an output end of the common mode inductor L3; the common mode capacitor CY1 is connected in series between one end of the differential mode inductor L1 connected with the common mode inductor L3 and a circuit ground, and the common mode capacitor CY2 is connected in series between one end of the differential mode inductor L2 connected with the common mode inductor L3 and the circuit ground; the output end of the common mode inductor L3 is used as the output end Po and the output end No of the filter;
the third frequency band frequency range is greater than the second frequency band frequency range and greater than the first frequency band frequency range.
2. The anti-electromagnetic interference high-voltage filter according to claim 1, characterized in that: the common mode rejection network further comprises a common mode capacitor CY3 and a common mode capacitor CY4 which are respectively connected in series between the output end of the common mode inductor L3 and circuit ground.
3. The anti-electromagnetic interference high-voltage filter according to claim 1, characterized in that: the filter is connected with the 1um solid laser and used for resisting electromagnetic interference of the 1um solid laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220390523.1U CN218416189U (en) | 2022-02-25 | 2022-02-25 | Anti-electromagnetic interference high-voltage filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220390523.1U CN218416189U (en) | 2022-02-25 | 2022-02-25 | Anti-electromagnetic interference high-voltage filter |
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| Publication Number | Publication Date |
|---|---|
| CN218416189U true CN218416189U (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220390523.1U Active CN218416189U (en) | 2022-02-25 | 2022-02-25 | Anti-electromagnetic interference high-voltage filter |
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| Country | Link |
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| CN (1) | CN218416189U (en) |
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2022
- 2022-02-25 CN CN202220390523.1U patent/CN218416189U/en active Active
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