CN203104375U - Filter assembly with low noise coefficient - Google Patents
Filter assembly with low noise coefficient Download PDFInfo
- Publication number
- CN203104375U CN203104375U CN201320079772XU CN201320079772U CN203104375U CN 203104375 U CN203104375 U CN 203104375U CN 201320079772X U CN201320079772X U CN 201320079772XU CN 201320079772 U CN201320079772 U CN 201320079772U CN 203104375 U CN203104375 U CN 203104375U
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- Prior art keywords
- inductance
- electric capacity
- filter assembly
- capacitor
- input
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Abstract
The utility model discloses a filter assembly with a low noise coefficient. The filter assembly comprises a housing, input ends, output ends, a first capacitor, a second capacitor, a third capacitor, a first inductor and a second inductor, wherein the input ends comprise an anode input end and a cathode input end; the output ends comprise an anode output end, a cathode output end and a grounding end; the cathode input end is connected with first ends of the second capacitor and the first inductor respectively; a second end of the first inductor is connected with a first end of the first capacitor and the anode output end respectively; the cathode input end is connected with a second end of the second capacitor and a first end of the second inductor respectively; and a second end of the second inductor is connected with a first end of the third capacitor and the cathode output end respectively. The filter assembly is simple in structure and good in interference resistance, and can be used for reducing the noise of a filter.
Description
Technical field
The utility model relates to a kind of filter, relates in particular to a kind of filter assembly of low noise coefficient.
Background technology
Filter is a kind of electric equipment that the frequency or the frequency beyond this frequency of characteristic frequency are carried out effective filtering.Its function is by inserting filter, obtaining the electronic signal of a characteristic frequency, or eliminate an electronic signal after the characteristic frequency.Utilize this characteristic of power-supply filter, can become the sine wave of a characteristic frequency by a square wave group or the compound ripple of making an uproar behind the filter.Filter is after energized, and when working under the heavy load operating mode, the capacitor in the circuit can send the high-frequency electromagnetic noise of " Dth Dth ", thereby surrounding environment is formed noise pollution.But also it is not carried out the measure of noise reduction process at present.
The utility model content
The purpose of this utility model provides a kind of filter assembly that can carry out the low noise coefficient of noise reduction process to filter with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The filter assembly of the utility model low noise coefficient, comprise housing, input, output, first electric capacity, second electric capacity, the 3rd electric capacity, first inductance and second inductance, described input comprises electrode input end and negative input, described output comprises cathode output end, cathode output end and earth terminal, described negative input is connected with first end of described second electric capacity and first end of described first inductance respectively, second end of described first inductance is connected with described cathode output end with first end of described first electric capacity respectively, described negative input is connected with second end of described second electric capacity and first end of described second inductance respectively, and second end of described second inductance is connected with described cathode output end with first end of described the 3rd electric capacity respectively.
Particularly, second end of described first electric capacity is connected back ground connection with second end of described the 3rd electric capacity.
Particularly, the shared toroidal core of described first inductance and described second inductance.
The beneficial effects of the utility model are:
The performance simple in structure, anti-tampering of the filter assembly of the utility model low noise coefficient is good and can carry out noise reduction process to filter.
Description of drawings
Fig. 1 is the internal circuit diagram of the filter assembly of the utility model low noise coefficient;
Fig. 2 is the front view of the filter assembly of the utility model low noise coefficient.
Among the figure: 1-housing, 2-input, 3-output.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As depicted in figs. 1 and 2, the filter assembly of the utility model low noise coefficient, comprise housing 1, input 2, output 3, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, first inductance L 1 and second inductance L 2, described input comprises electrode input end and negative input, described output comprises cathode output end, cathode output end and earth terminal, described negative input is connected with first end of second capacitor C 2 and first end of first inductance L 1 respectively, second end of first inductance L 1 is connected with described cathode output end with first end of first capacitor C 1 respectively, described negative input is connected with second end of second capacitor C 2 and first end of second inductance L 2 respectively, second end of second inductance L 2 is connected with described cathode output end with first end of the 3rd capacitor C 3 respectively, second end of first capacitor C 1 is connected back ground connection, first inductance L 1 and second inductance L, 2 shared toroidal cores with second end of the 3rd capacitor C 3.
Claims (3)
1. the filter assembly of a low noise coefficient, comprise housing, input and output, it is characterized in that: also comprise first electric capacity, second electric capacity, the 3rd electric capacity, first inductance and second inductance, described input comprises electrode input end and negative input, described output comprises cathode output end, cathode output end and earth terminal, described negative input is connected with first end of described second electric capacity and first end of described first inductance respectively, second end of described first inductance is connected with described cathode output end with first end of described first electric capacity respectively, described negative input is connected with second end of described second electric capacity and first end of described second inductance respectively, and second end of described second inductance is connected with described cathode output end with first end of described the 3rd electric capacity respectively.
2. the filter assembly of low noise coefficient according to claim 1 is characterized in that: second end of described first electric capacity is connected back ground connection with second end of described the 3rd electric capacity.
3. the filter assembly of low noise coefficient according to claim 1 is characterized in that: the shared toroidal core of described first inductance and described second inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320079772XU CN203104375U (en) | 2013-02-21 | 2013-02-21 | Filter assembly with low noise coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320079772XU CN203104375U (en) | 2013-02-21 | 2013-02-21 | Filter assembly with low noise coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104375U true CN203104375U (en) | 2013-07-31 |
Family
ID=48855749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320079772XU Expired - Fee Related CN203104375U (en) | 2013-02-21 | 2013-02-21 | Filter assembly with low noise coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203104375U (en) |
-
2013
- 2013-02-21 CN CN201320079772XU patent/CN203104375U/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 |
Granted publication date: 20130731 Termination date: 20190221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |