CN203445845U - Filter circuit for enhancing service life of electronic component - Google Patents
Filter circuit for enhancing service life of electronic component Download PDFInfo
- Publication number
- CN203445845U CN203445845U CN201320559670.8U CN201320559670U CN203445845U CN 203445845 U CN203445845 U CN 203445845U CN 201320559670 U CN201320559670 U CN 201320559670U CN 203445845 U CN203445845 U CN 203445845U
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- CN
- China
- Prior art keywords
- filter circuit
- electronic component
- circuit
- electronic devices
- components
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a filter circuit for enhancing the service life of an electronic component. The filter circuit comprises an output end of the filter circuit and an input end of the filter circuit. The filter circuit also comprises two capacitors and one inductor. One end of the inductor is connected with the input end of the filter circuit, and the other end is connected with the output end of the filter circuit. One end of each capacitor is connected with ground, and the other end is connected on a circuit between the inductor and the output end of the filter circuit. The filter circuit is arranged between the electronic component and a power supply switch circuit, and filtering processing can be performed on current flowing into the electronic component by the capacitors so that current flowing into the electronic component can be purer. During the processing of switching between the working state and the non-working state of the electronic component, interference signals generated in the power supply switch circuit can be prevented from flowing into the electronic component by the inductor, and a situation that the electronic component is at the abnormal working state in a quite short period of time is avoided so that the electronic component is protected and the service life of the electronic component is enhanced.
Description
Technical field
The utility model relates to circuit signal processing technology field, relates in particular to a kind of electronic devices and components filter circuit in useful life that improves.
Background technology
Electronic devices and components are connected with power supply by a power switch circuit mostly, yet are all provided with inductance in most power switch circuit.
When power switch circuit switches between conducting and cut-off, the inductance arranging on power switch circuit will produce interference signal, this interference signal can make electronic devices and components within the extremely short time in abnormal operating state, if things go on like this, can damage electronic devices and components, shorten the useful life of electronic devices and components.
Utility model content
The purpose of this utility model is to provide a kind of electronic devices and components filter circuit in useful life that improves, and can, in filtering, prevent that interference signal from entering electronic devices and components.
In order to achieve the above object, the technical solution adopted in the utility model, a kind of electronic devices and components filter circuit in useful life that improves, comprise the output of a filter circuit and the input of a filter circuit, described filter circuit also comprises two electric capacity and an inductance, inductance one end is connected with the input of filter circuit, and the other end is connected with the output of filter circuit; One end ground connection of two electric capacity, the other end is connected on the circuit between inductance and the output of filter circuit.
Preferably, one end ground connection, the other end is connected to two electric capacity on the circuit between inductance and the output of filter circuit, and one is polar capacitor, and another is common electric capacity.
The beneficial effects of the utility model
:
Filter circuit of the present utility model is set among the power supply circuits of electronic devices and components, and be arranged between electronic devices and components and power switch circuit, electric capacity can carry out filtering processing to flowing into the electric current of electronic devices and components, and the electric current that makes to flow into electronic devices and components is more pure; Electronic devices and components are in working order and in the process of switching between non operating state; be in the process of power switch circuit switching between conducting and cut-off; inductance can stop the interference signal producing in power switch circuit to flow into electronic devices and components; avoid electronic devices and components the utmost point in the short time in abnormal operating state; thereby protection electronic devices and components, the useful life of improving electronic devices and components.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the utility model improves the filter circuit in electronic devices and components useful life;
Fig. 2 is the circuit diagram of conventional power switch circuit;
Fig. 3 is that the utility model improves the circuit diagram that the filter circuit in electronic devices and components useful life is combined with conventional power switch circuit.
Embodiment
The circuit diagram of filter circuit as shown in Figure 1, filter circuit comprises inductance L 2, polar capacitor C7 and common capacitor C 8, inductance L 2 one end are connected with the input of filter circuit, the other end is connected with the output of filter circuit, is connected with in parallel a polar capacitor C7 and a common capacitor C 8 on the circuit between inductance L 2 and filter circuit output.
The circuit diagram of conventional power switch circuit as shown in Figure 2, the DT1410 of the Taide company that in the present embodiment, power switch circuit adopts.
The circuit diagram that filter circuit is connected with power switch circuit as shown in Figure 3, the input of filter circuit is connected with the output of power switch circuit, the output of filter circuit can be connected to electronic devices and components, polar capacitor C7 and common capacitor C 8 can be carried out filtering processing to flowing into the electric current of electronic devices and components, and the electric current of guaranteeing to flow into electronic devices and components is pure.When electronic devices and components are in working order and when switch between non operating state, be in the process of power switch circuit conducting and cut-off switching, inductance L 1 can produce interference signal, interference signal is after filtering in the process of circuit, inductance L 2 stops this interference signal, prevent that interference signal from flowing into electronic devices and components, avoids electronic devices and components in abnormal operating state.
Claims (2)
1. one kind is improved the electronic devices and components filter circuit in useful life, comprise the output of a filter circuit and the input of a filter circuit, it is characterized in that: filter circuit also comprises two electric capacity and an inductance, inductance one end is connected with the input of filter circuit, and the other end is connected with the output of filter circuit; One end ground connection of two electric capacity, the other end is connected on the circuit between inductance and the output of filter circuit.
2. the filter circuit in raising electronic devices and components according to claim 1 useful life, it is characterized in that: one end ground connection, the other end is connected to two electric capacity on the circuit between inductance and the output of filter circuit, and one is polar capacitor, and another is common electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559670.8U CN203445845U (en) | 2013-09-10 | 2013-09-10 | Filter circuit for enhancing service life of electronic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559670.8U CN203445845U (en) | 2013-09-10 | 2013-09-10 | Filter circuit for enhancing service life of electronic component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445845U true CN203445845U (en) | 2014-02-19 |
Family
ID=50096858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320559670.8U Expired - Fee Related CN203445845U (en) | 2013-09-10 | 2013-09-10 | Filter circuit for enhancing service life of electronic component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445845U (en) |
-
2013
- 2013-09-10 CN CN201320559670.8U patent/CN203445845U/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: 20140219 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |