CN204481776U - A kind of filter circuit - Google Patents
A kind of filter circuit Download PDFInfo
- Publication number
- CN204481776U CN204481776U CN201520168385.2U CN201520168385U CN204481776U CN 204481776 U CN204481776 U CN 204481776U CN 201520168385 U CN201520168385 U CN 201520168385U CN 204481776 U CN204481776 U CN 204481776U
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- China
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- electric capacity
- resistance
- filter unit
- inductance
- triode
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Abstract
The utility model belongs to technical field of filtering, particularly relate to a kind of filter circuit, input J1, output J2, RC filter unit, LC filter unit, transmission unit, RC filter unit comprises resistance R1, electric capacity C1, LC filter unit comprises inductance L 2, electric capacity C2, and transmission unit comprises inductance L 1, electric capacity C5, electric capacity C4, resistance R2, triode Q1, resistance R3.The signal of the input J1 of this patent carries out filtering by RC filter unit, LC filter unit respectively, adopts the design of double-smoothing, greatly can improve filter effect, and antijamming capability is good; Adopt RC filter unit, LC filter unit to replace traditional two capacitive way, achieve the anti-interference filtration of large frequency range.
Description
Technical field
The utility model belongs to technical field of filtering, particularly relates to a kind of filter circuit.
Background technology
In recent years, the development of micro-electronic mechanical system technique opens a brand-new technical field and industry, it adopts the generation technique similar with integrated circuit (IC), cost performance is increased substantially relative to traditional Machine Manufacturing Technology, leads system and product to miniaturized, intelligent, integrated development.The microsensor, microactrator, Micromechanical Optics device, power electronic device etc. that adopt micro-electronic mechanical system technique to make have very wide application prospect in nearly all fields such as Aeronautics and Astronautics, automobile, biomedicine, environmental monitoring, military affairs.
But existing filter circuit adopts two capacitive way, there is the problem of poor anti jamming capability.
Utility model content
The utility model provides a kind of filter circuit, solving in above-mentioned background technology but, existing filter circuit adopts two capacitive way, there is the problem of poor anti jamming capability.
The technical problem that the utility model solves realizes by the following technical solutions: the utility model provides a kind of filter circuit, it is characterized in that: comprise input J1, output J2, RC filter unit, LC filter unit, transmission unit, described RC filter unit comprises resistance R1, electric capacity C1, described LC filter unit comprises inductance L 2, electric capacity C2, described transmission unit comprises inductance L 1, electric capacity C5, electric capacity C4, resistance R2, triode Q1, one end of the pin 1 connecting resistance R1 of resistance R3, described input J1, one end of electric capacity C1, its pin 2 connects one end of inductance L 1, one end of another termination capacitor C2 of described inductance L 1, one end of electric capacity C5, one end of inductance L 2, the other end of another termination inductance L 2 of described electric capacity C2 and all ground connection, the other end ground connection of described electric capacity C1, one end of another termination capacitor C4 of described resistance R1, one end of resistance R3, the other end of another termination capacitor C4 of described electric capacity C5, one end of resistance R2, the collector electrode of another termination triode Q1 of described resistance R2, the other end of the base stage connecting resistance R3 of described triode Q1, the pin 2 of output J2, its emitter connects the pin 1 of output J2.
Described triode Q1 selects the triode of NPN type.
Described resistance R1 selects and buries resistance design.
Described electric capacity C1 selects to bury and is installed with meter.
The beneficial effects of the utility model are:
The signal of the input J1 of 1 this patent carries out filtering by RC filter unit, LC filter unit respectively, adopts the design of double-smoothing, greatly can improve filter effect, and antijamming capability is good.
2 this patents adopt RC filter unit, LC filter unit to replace traditional two capacitive way, achieve the anti-interference filtration of large frequency range.
3 this patents adopt the design of inductance L 1 and triode Q1, are beneficial to the impedance matching of circuit in Signal transmissions, reduce the insertion loss of signal line in actual applications, improve the transmission quality of signal.
The structure of 4 this patents is simple, and each components and parts are relatively less, low cost of manufacture, can promote the use of on a large scale.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment:
The present embodiment comprises: input J1, output J2, RC filter unit, LC filter unit, transmission unit, RC filter unit comprises resistance R1, electric capacity C1, LC filter unit comprises inductance L 2, electric capacity C2, transmission unit comprises inductance L 1, electric capacity C5, electric capacity C4, resistance R2, triode Q1, resistance R3, one end of the pin 1 connecting resistance R1 of input J1, one end of electric capacity C1, its pin 2 connects one end of inductance L 1, one end of another termination capacitor C2 of inductance L 1, one end of electric capacity C5, one end of inductance L 2, the other end of another termination inductance L 2 of electric capacity C2 and all ground connection, the other end ground connection of electric capacity C1, one end of another termination capacitor C4 of resistance R1, one end of resistance R3, the other end of another termination capacitor C4 of electric capacity C5, one end of resistance R2, the collector electrode of another termination triode Q1 of resistance R2, the other end of the base stage connecting resistance R3 of triode Q1, the pin 2 of output J2, its emitter connects the pin 1 of output J2.
Triode Q1 selects the triode of NPN type.
Resistance R1 selects and buries resistance design.
Electric capacity C1 selects to bury and is installed with meter.
The signal of the input J1 of this patent carries out filtering by RC filter unit, LC filter unit respectively, adopts the design of double-smoothing, greatly can improve filter effect, and antijamming capability is good; Adopt RC filter unit, LC filter unit to replace traditional two capacitive way, achieve the anti-interference filtration of large frequency range; Adopt the design of inductance L 1 and triode Q1, be beneficial to the impedance matching of circuit in Signal transmissions, reduce the insertion loss of signal line in actual applications, improve the transmission quality of signal.
Utilize technical scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technical scheme, and reach above-mentioned technique effect, is all fall into protection range of the present utility model.
Claims (4)
1. a filter circuit, is characterized in that: comprise input J1, output J2, RC filter unit, LC filter unit, transmission unit, described RC filter unit comprises resistance R1, electric capacity C1, described LC filter unit comprises inductance L 2, electric capacity C2, described transmission unit comprises inductance L 1, electric capacity C5, electric capacity C4, resistance R2, triode Q1, one end of the pin 1 connecting resistance R1 of resistance R3, described input J1, one end of electric capacity C1, its pin 2 connects one end of inductance L 1, one end of another termination capacitor C2 of described inductance L 1, one end of electric capacity C5, one end of inductance L 2, the other end of another termination inductance L 2 of described electric capacity C2 and all ground connection, the other end ground connection of described electric capacity C1, one end of another termination capacitor C4 of described resistance R1, one end of resistance R3, the other end of another termination capacitor C4 of described electric capacity C5, one end of resistance R2, the collector electrode of another termination triode Q1 of described resistance R2, the other end of the base stage connecting resistance R3 of described triode Q1, the pin 2 of output J2, its emitter connects the pin 1 of output J2.
2. a kind of filter circuit according to claim 1, is characterized in that: described triode Q1 selects the triode of NPN type.
3. a kind of filter circuit according to claim 1, is characterized in that: described resistance R1 selects and buries resistance design.
4. a kind of filter circuit according to claim 1, is characterized in that: described electric capacity C1 selects to bury and is installed with meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520168385.2U CN204481776U (en) | 2015-03-24 | 2015-03-24 | A kind of filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520168385.2U CN204481776U (en) | 2015-03-24 | 2015-03-24 | A kind of filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481776U true CN204481776U (en) | 2015-07-15 |
Family
ID=53637547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520168385.2U Expired - Fee Related CN204481776U (en) | 2015-03-24 | 2015-03-24 | A kind of filter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471572A (en) * | 2018-04-26 | 2018-08-31 | 珠海锐视保科技有限公司 | Novel on-vehicle system |
| CN108667480A (en) * | 2018-04-26 | 2018-10-16 | 珠海锐视保科技有限公司 | Onboard system |
| CN108683973A (en) * | 2018-04-26 | 2018-10-19 | 珠海锐视保科技有限公司 | Vehicle-mounted monitoring system |
-
2015
- 2015-03-24 CN CN201520168385.2U patent/CN204481776U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471572A (en) * | 2018-04-26 | 2018-08-31 | 珠海锐视保科技有限公司 | Novel on-vehicle system |
| CN108667480A (en) * | 2018-04-26 | 2018-10-16 | 珠海锐视保科技有限公司 | Onboard system |
| CN108683973A (en) * | 2018-04-26 | 2018-10-19 | 珠海锐视保科技有限公司 | Vehicle-mounted monitoring system |
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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: 20150715 Termination date: 20160324 |