CN204156871U - A kind of reduction conducted interference circuit - Google Patents
A kind of reduction conducted interference circuit Download PDFInfo
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- CN204156871U CN204156871U CN201420564734.8U CN201420564734U CN204156871U CN 204156871 U CN204156871 U CN 204156871U CN 201420564734 U CN201420564734 U CN 201420564734U CN 204156871 U CN204156871 U CN 204156871U
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Abstract
The utility model discloses a kind of reduction conducted interference circuit, comprise the first filter circuit, rectification circuit and the second filter circuit, described first power end is connected with the first input end of the first filter circuit, second input of described first filter circuit is connected with second source end, first output of described first filter circuit is connected with the first input end of rectification circuit, second output of described first filter circuit is connected with the second input of rectification circuit, first output of described rectification circuit is connected with the first input end of the second filter circuit, second output of described rectification circuit is connected with the second filter circuit second input.The utility model effectively can solve the problem of conducted interference, and partial electric grid can also be improved totally spend, reduce supply waveform distortion, do not affect transfer of data and communication quality at crucial moment, provide for the instrument and equipment in same local area network normally works environment of well powering.The utility model can be widely used in electronic circuit field.
Description
Technical field
The utility model relates to electronic circuit technology field, particularly relates to a kind of reduction conducted interference circuit.
Background technology
High special occasions is required to EMC, such as use the communication van etc. that national military standard GJB-151A CE102 requires conducted interference, if conducted interference is dealt with improperly, the clean degree of partial electric grid can be affected, easily cause supply waveform serious distortion, and then affect the normal work of the instrument and equipment in same local area network, transfer of data and communication quality may be affected at crucial moment.And present circuit all can not meet the corresponding requirements of national military standard in the medium and low frequency section of 10KHz to 10MHz.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide one can reduce conducted interference, and the one improving communication quality reduces conducted interference circuit.
The technical scheme that the utility model adopts is:
A kind of reduction conducted interference circuit, comprise the first filter circuit, rectification circuit and the second filter circuit, described first power end is connected with the first input end of the first filter circuit, second input of described first filter circuit is connected with second source end, first output of described first filter circuit is connected with the first input end of rectification circuit, second output of described first filter circuit is connected with the second input of rectification circuit, first output of described rectification circuit is connected with the first input end of the second filter circuit, second output of described rectification circuit is connected with the second input of the second filter circuit.
As further improvement of the utility model, described rectification circuit comprises the first diode, second diode, 3rd diode and the 4th diode, first output of described first filter circuit is connected with the negative pole end of the first diode and the positive terminal of the second diode respectively, second output of described first filter circuit is connected with the negative pole end of the 3rd diode and the positive terminal of the 4th diode respectively, the first input end of described second filter circuit is connected with the negative pole end of the second diode and the negative pole end of the 4th diode respectively, second input of described second filter circuit is connected with the positive terminal of the first diode and the positive terminal of the 3rd diode respectively.
As further improvement of the utility model, described first filter circuit comprises the first inductance, second inductance, first electric capacity, second electric capacity, first resistance and the second resistance, be connected between the first power end and the first input end of rectification circuit after described first inductance and the first resistor coupled in parallel, be connected between second source end and the second input of rectification circuit after described second inductance and the second resistor coupled in parallel, described first power end is connected with second source end by the first electric capacity, the first input end of described rectification circuit is connected with the second input of rectification circuit by the second electric capacity.
As further improvement of the utility model, described second filter circuit comprises the 3rd electric capacity, the 4th electric capacity, the 3rd resistance and the 3rd inductance, first output of described rectification circuit is connected with the second output of rectification circuit by the 3rd electric capacity, first output of described rectification circuit is connected with the first end of the 4th electric capacity, is connected between the second output of rectification circuit and the second end of the 4th electric capacity after described 3rd resistance and the 3rd inductance in parallel.
As further improvement of the utility model, also include the first Absorption Capacitance and the second Absorption Capacitance, first output of described first filter circuit is by the first Absorption Capacitance and be functionally connected to, and the second output of described first filter circuit is by the second Absorption Capacitance and be functionally connected to.
As further improvement of the utility model, between described first power end and the first input end of the first filter circuit, be also connected with fuse.
The beneficial effects of the utility model are:
The utility model one reduces conducted interference circuit by the first filter circuit and the second filter circuit, the problem of effective solution conducted interference, meet GB, the requirement of national military standard respective standard, and partial electric grid can also be improved totally spend, reduce supply waveform distortion, do not affect transfer of data and communication quality at crucial moment, provide for the instrument and equipment in same local area network normally works environment of well powering.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is a kind of circuit theory diagrams reducing conducted interference circuit of the utility model.
Embodiment
With reference to figure 1, the utility model one reduces conducted interference circuit, comprise the first filter circuit, rectification circuit and the second filter circuit, described first power end is connected with the first input end of the first filter circuit, second input of described first filter circuit is connected with second source end, first output of described first filter circuit is connected with the first input end of rectification circuit, second output of described first filter circuit is connected with the second input of rectification circuit, first output of described rectification circuit is connected with the first input end of the second filter circuit, second output of described rectification circuit is connected with the second input of the second filter circuit.
Be further used as preferred embodiment, described rectification circuit comprises the first diode D1, second diode D2, 3rd diode D3 and the 4th diode D4, first output of described first filter circuit is connected with the negative pole end of the first diode D1 and the positive terminal of the second diode D2 respectively, second output of described first filter circuit is connected with the negative pole end of the 3rd diode D3 and the positive terminal of the 4th diode D4 respectively, the first input end of described second filter circuit is connected with the negative pole end of the second diode D2 and the negative pole end of the 4th diode D4 respectively, second input of described second filter circuit is connected with the positive terminal of the first diode D1 and the positive terminal of the 3rd diode D3 respectively.
Be further used as preferred embodiment, described first filter circuit comprises the first inductance L 1, second inductance L 2, first electric capacity C1, second electric capacity C2, first resistance R1 and the second resistance R2, be connected between the first power end and the first input end of rectification circuit after described first inductance L 1 and the first resistance R1 parallel connection, be connected between second source end and the second input of rectification circuit after described second inductance L 2 and the second resistance R2 parallel connection, described first power end is connected with second source end by the first electric capacity C1, the first input end of described rectification circuit is connected with the second input of rectification circuit by the second electric capacity C2.
Be further used as preferred embodiment, described second filter circuit comprises the 3rd electric capacity C3, the 4th electric capacity C4, the 3rd resistance R3 and the 3rd inductance L 3, first output of described rectification circuit is connected with the second output of rectification circuit by the 3rd electric capacity C3, first output of described rectification circuit is connected with the first end of the 4th electric capacity C4, is connected between the second output of rectification circuit and second end of the 4th electric capacity C4 after described 3rd resistance R3 and the 3rd inductance L 3 parallel connection.
Be further used as preferred embodiment, also include the first Absorption Capacitance CY1 and the second Absorption Capacitance CY2, first output of described first filter circuit is by the first Absorption Capacitance CY1 and be functionally connected to, and the second output of described first filter circuit is by the second Absorption Capacitance CY2 and be functionally connected to.
Be further used as preferred embodiment, between described first power end and the first input end of the first filter circuit, be also connected with fuse FU.
In the present embodiment, first electric capacity C1 selects 275V to exchange safety electric capacity with the second electric capacity C2,3rd electric capacity C3 selects the metal film electric capacity of 400V or more, first inductance L 1, second inductance L 2 and the 3rd inductance L 3 select ferrite I-shaped inductance, wherein, 3rd inductance L 3 is less than the first inductance L 1 and the second inductance L 2, first resistance R1, the second resistance R2 and the 3rd resistance R3 are mainly used in antiparasitic.
The utility model, can the switching circuit harmonic wave of effective filtering by the design parameter of circuit element in adjustment first filter circuit and the second filter circuit, and reduction conducted interference, reaches designing requirement.
More than that better enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (6)
1. one kind is reduced conducted interference circuit, it is characterized in that: comprise the first filter circuit, rectification circuit and the second filter circuit, described first power end is connected with the first input end of the first filter circuit, second input of described first filter circuit is connected with second source end, first output of described first filter circuit is connected with the first input end of rectification circuit, second output of described first filter circuit is connected with the second input of rectification circuit, first output of described rectification circuit is connected with the first input end of the second filter circuit, second output of described rectification circuit is connected with the second input of the second filter circuit.
2. one according to claim 1 reduces conducted interference circuit, it is characterized in that: described rectification circuit comprises the first diode (D1), second diode (D2), 3rd diode (D3) and the 4th diode (D4), first output of described first filter circuit is connected with the negative pole end of the first diode (D1) and the positive terminal of the second diode (D2) respectively, second output of described first filter circuit is connected with the negative pole end of the 3rd diode (D3) and the positive terminal of the 4th diode (D4) respectively, the first input end of described second filter circuit is connected with the negative pole end of the second diode (D2) and the negative pole end of the 4th diode (D4) respectively, second input of described second filter circuit is connected with the positive terminal of the first diode (D1) and the positive terminal of the 3rd diode (D3) respectively.
3. one according to claim 1 reduces conducted interference circuit, it is characterized in that: described first filter circuit comprises the first inductance (L1), second inductance (L2), first electric capacity (C1), second electric capacity (C2), first resistance (R1) and the second resistance (R2), be connected between the first power end and the first input end of rectification circuit after described first inductance (L1) and the first resistance (R1) parallel connection, be connected between second source end and the second input of rectification circuit after described second inductance (L2) and the second resistance (R2) parallel connection, described first power end is connected with second source end by the first electric capacity (C1), the first input end of described rectification circuit is connected with the second input of rectification circuit by the second electric capacity (C2).
4. one according to claim 1 reduces conducted interference circuit, it is characterized in that: described second filter circuit comprises the 3rd electric capacity (C3), 4th electric capacity (C4), 3rd resistance (R3) and the 3rd inductance (L3), first output of described rectification circuit is connected with the second output of rectification circuit by the 3rd electric capacity (C3), first output of described rectification circuit is connected with the first end of the 4th electric capacity (C4), be connected between the second output of rectification circuit and the second end of the 4th electric capacity (C4) after described 3rd resistance (R3) and the 3rd inductance (L3) parallel connection.
5. one according to claim 1 reduces conducted interference circuit, it is characterized in that: also include the first Absorption Capacitance (CY1) and the second Absorption Capacitance (CY2), first output of described first filter circuit is by the first Absorption Capacitance (CY1) and be functionally connected to, and the second output of described first filter circuit is by the second Absorption Capacitance (CY2) and be functionally connected to.
6. one according to claim 1 reduces conducted interference circuit, it is characterized in that: be also connected with fuse (FU) between described first power end and the first input end of the first filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564734.8U CN204156871U (en) | 2014-09-28 | 2014-09-28 | A kind of reduction conducted interference circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564734.8U CN204156871U (en) | 2014-09-28 | 2014-09-28 | A kind of reduction conducted interference circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156871U true CN204156871U (en) | 2015-02-11 |
Family
ID=52514958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564734.8U Expired - Fee Related CN204156871U (en) | 2014-09-28 | 2014-09-28 | A kind of reduction conducted interference circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204156871U (en) |
-
2014
- 2014-09-28 CN CN201420564734.8U patent/CN204156871U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20210928 |