CN103152001A - Coaxial non-inductive distribution parameter type electromagnetic noise silencer - Google Patents
Coaxial non-inductive distribution parameter type electromagnetic noise silencer Download PDFInfo
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- CN103152001A CN103152001A CN2013100981135A CN201310098113A CN103152001A CN 103152001 A CN103152001 A CN 103152001A CN 2013100981135 A CN2013100981135 A CN 2013100981135A CN 201310098113 A CN201310098113 A CN 201310098113A CN 103152001 A CN103152001 A CN 103152001A
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Abstract
The invention relates to a coaxial non-inductive distribution parameter type electromagnetic noise silencer, which comprises a metal shell, wherein a rod resistor is arranged in the metal shell, and the end part of the rod resistor is respectively provided with an output end and an input end. A plurality of capacitance metal rings are arranged on the rod resistor, and capacitance insulating mediums are arranged among the capacitance metal rings. After the structure is adopted, the silencer has distribution type resistance and capacitance parameters. Signals only pass through the rod resistor, and thus the signals are influenced by the external distribution parameter. The inductance parameter of the whole silencer is very low, the high frequency interference phenomenon is basically eliminated, and a frequency-response curve higher than the designed cut-off frequency is quickly reduced. The silencer has a good low-pass filter property. The cut-off frequency can be changed and the slope of curve can be decayed by adjusting the resistance and capacitance distribution parameters. The electromagnetic noise silencer plays a good filtering role on high-voltage large-current interference signals.
Description
Technical field
The present invention relates to a kind of electromagnetic noise muffler, especially relate to a kind of for suppressing electronic equipment power source or signal input part high-frequency electromagnetic noise, the electromagnetic noise muffler of low inductance parameters.
Background technology
In many industries, all need to adopt electronic equipment, now increasing to the demand of electronic circuit, and for the electronic circuit on power equipment, must work under comparatively abominable electromagnetic environment, can filter preferably high-frequency electromagnetic and disturb.Along with the progressively development of intelligent grid, the accuracy requirement of the various acquisition of informations of electronic equipment is also improved gradually, therefore need the strong high frequency noise of well behaved filtration guarantee signal acquisition pure and signal accurately.Now widely used common low pass filter generally adopts resistance capacitance element to form filter circuit and realizes, such filter can't be accomplished low inductance, and poor effect and the filter of High frequency filter oscillating characteristic easily occurred at some high band, affect the High frequency filter effect; Simultaneously do not accomplish to block strongly disturbing spatial approach yet, often do not reach desirable filter effect.In addition, when containing the high-voltage large current interference signal in current end line, existing filter is filtering interfering well.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of coaxial noninductive distributed constant formula electromagnetic noise muffler, and it can solve the interference problem to the high voltage heavy current.
The technical solution adopted for the present invention to solve the technical problems is: a kind of coaxial noninductive distributed constant formula electromagnetic noise muffler, comprise metal shell, be provided with rod resistance in metal shell, the end of rod resistance is respectively equipped with output and input, rod resistance is provided with some electric capacity beckets, is provided with the capacitive insulation medium between the electric capacity becket.
In order to control uniformly filter effect, further concrete, described electric capacity becket is distributed on rod resistance.
Further concrete, described rod resistance at least one.
the invention has the beneficial effects as follows: after having adopted said structure, make it have the distributed resistance capacitance parameter, signal is the impact that rod resistance will be subject to extraneous distributed constant through unique channel, and whole muffler inductance parameters is very low, substantially eliminated the High-frequency Interference phenomenon, its frequency response curve is decayed rapidly more than higher than the design cut-off frequency, has good low-frequency filter characteristics, and the distributed constant of adjusting resistance electric capacity can change the slope of cut-off frequency and attenuation curve, this electromagnetic noise muffler has good filtration for the high-voltage large current interference signal.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure: 1, capacitive insulation medium; 2, electric capacity becket; 3, output; 4, rod resistance; 5, metal shell; 6, input.
Embodiment
A kind of coaxial noninductive distributed constant formula electromagnetic noise muffler as shown in Figure 1, comprise metal shell 5, be provided with rod resistance 4 in metal shell 5, the end of rod resistance 4 is respectively equipped with output 3 and input 6, rod resistance 4 is provided with some electric capacity beckets 2, is provided with capacitive insulation medium 1 between electric capacity becket 2; Described electric capacity becket 2 is distributed on rod resistance 1.
When using, with metal shell 5 ground connection, input signal is from input 6 inputs, by rod resistance 4, electric capacity becket 2 and capacitive insulation medium 1, high-frequency signal is filtered, the signal of only surplus required frequency, the present invention can regulate the effect of filtering and the frequency range of filtering by length or the distance between control capacittance becket 2 of lengthening or minimizing muffler.
It is emphasized that: above is only preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (3)
1. coaxial noninductive distributed constant formula electromagnetic noise muffler, it is characterized in that: comprise metal shell (5), be provided with rod resistance (4) in metal shell (5), the end of rod resistance (4) is respectively equipped with output (3) and input (6), rod resistance (4) is provided with some electric capacity beckets (2), is provided with capacitive insulation medium (1) between electric capacity becket (2).
2. coaxial noninductive distributed constant formula electromagnetic noise muffler according to claim 1, it is characterized in that: described electric capacity becket (2) is distributed on rod resistance (4).
3. coaxial noninductive distributed constant formula electromagnetic noise muffler according to claim 1, is characterized in that: described rod resistance (4) at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100981135A CN103152001A (en) | 2013-03-26 | 2013-03-26 | Coaxial non-inductive distribution parameter type electromagnetic noise silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100981135A CN103152001A (en) | 2013-03-26 | 2013-03-26 | Coaxial non-inductive distribution parameter type electromagnetic noise silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103152001A true CN103152001A (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100981135A Pending CN103152001A (en) | 2013-03-26 | 2013-03-26 | Coaxial non-inductive distribution parameter type electromagnetic noise silencer |
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| Country | Link |
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| CN (1) | CN103152001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564519A (en) * | 2019-09-24 | 2021-03-26 | 阳光电源股份有限公司 | Inverter output filter inductive current oscillation suppression method and suppression device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2911333A (en) * | 1954-11-24 | 1959-11-03 | Itt | Method for manufacturing a coaxial filter |
| CN1288597A (en) * | 1998-11-12 | 2001-03-21 | 三菱电机株式会社 | Low-pass filter |
| CN101931113A (en) * | 2009-06-25 | 2010-12-29 | 泰科电子(上海)有限公司 | Low-pass filter |
-
2013
- 2013-03-26 CN CN2013100981135A patent/CN103152001A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2911333A (en) * | 1954-11-24 | 1959-11-03 | Itt | Method for manufacturing a coaxial filter |
| CN1288597A (en) * | 1998-11-12 | 2001-03-21 | 三菱电机株式会社 | Low-pass filter |
| CN101931113A (en) * | 2009-06-25 | 2010-12-29 | 泰科电子(上海)有限公司 | Low-pass filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564519A (en) * | 2019-09-24 | 2021-03-26 | 阳光电源股份有限公司 | Inverter output filter inductive current oscillation suppression method and suppression device |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |