CN203225714U - Anti-lightning filter - Google Patents
Anti-lightning filter Download PDFInfo
- Publication number
- CN203225714U CN203225714U CN 201320293729 CN201320293729U CN203225714U CN 203225714 U CN203225714 U CN 203225714U CN 201320293729 CN201320293729 CN 201320293729 CN 201320293729 U CN201320293729 U CN 201320293729U CN 203225714 U CN203225714 U CN 203225714U
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- Prior art keywords
- inductance
- electric capacity
- capacitor
- inductor
- lightning
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Abstract
The utility model discloses an anti-lightning filter which is composed of a first inductor, a second inductor, a third inductor, a fourth inductor, a fifth inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first anti-lightning pipe and a second anti-lightning pipe. The first inductor, the second inductor, the third inductor, the fourth inductor and the fifth inductor are connected in series. The anti-lightning filter has the advantages that the defect that an anti-lightning function of a filter in the prior art lacks is overcome, and abnormal television signal receiving due to the fact that the filter is broken down by lightning is avoided.
Description
Technical field
The utility model includes the cable TV system equipment technical field, particularly a kind of anti-lightning strike filter.
Background technology
The filter that the TV signal of prior art receives usefulness just simply utilizes the cooperation of inductance and electric capacity to come clutter in the trap signal, but this filter lacks lightning protection function, therefore when the electric use of thunderstorm, may cause filter to be worn by thunderbolt, causing can not received television signal.
The utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of anti-lightning strike filter.
(2) technical scheme
For achieving the above object, anti-lightning strike filter of the present utility model, by first inductance, second inductance, the 3rd inductance, the 4th inductance, the 5th inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first anti-thunder tube and second anti-thunder tube are formed, described first inductance, described second inductance, described the 3rd inductance, described the 4th inductance and described the 5th inductance are connected in series, described first electric capacity is in parallel with described first inductance, described second electric capacity is in parallel with described second inductance, described the 3rd electric capacity and described the 3rd inductance, described the 4th electric capacity and described the 4th inductance parallel connection, described the 5th electric capacity of connecting between the junction of described first inductance and described second inductance and the ground wire, described the 6th electric capacity of connecting between the junction of described second inductance and described the 3rd inductance and the ground wire, described the 7th electric capacity of connecting between the junction of described the 3rd inductance and described the 4th inductance and the ground wire, described first anti-thunder tube of connecting between the input of described the 5th inductance and the ground wire, described second anti-thunder tube of series connection between the output of described the 4th inductance and the ground wire.
Further, the withstand voltage of described first anti-thunder tube and described second lightning protection is 90V.
Further, the withstand voltage of described first electric capacity, described second electric capacity, described the 3rd electric capacity, described the 4th electric capacity, described the 5th electric capacity, described the 6th electric capacity and described the 7th electric capacity is more than 200V.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: the filter that has overcome prior art lacks the defective of lightning protection function, prevents that filter from being punctured by thunder and lightning and cause normally received television signal.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the anti-lightning strike filter of the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, anti-lightning strike filter of the present utility model, by first inductance L 1, second inductance L 2, the 3rd inductance L 3, the 4th inductance L 4, the 5th inductance L 5, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the first anti-thunder tube G1 and the second anti-thunder tube G2 form, described first inductance L 1, described second inductance L 2, described the 3rd inductance L 3, described the 4th inductance L 4 and described the 5th inductance L 5 are connected in series, described first capacitor C 1 is in parallel with described first inductance L 1, described second capacitor C 2 is in parallel with described second inductance L 2, described the 3rd capacitor C 3 and described the 3rd inductance L 3, described the 4th capacitor C 4 and 4 parallel connections of described the 4th inductance L, described the 5th capacitor C 5 of connecting between the junction of described first inductance L 1 and described second inductance L 2 and the ground wire, described the 6th capacitor C 6 of connecting between the junction of described second inductance L 2 and described the 3rd inductance L 3 and the ground wire, described the 7th capacitor C 7 of connecting between the junction of described the 3rd inductance L 3 and described the 4th inductance L 4 and the ground wire, the described first anti-thunder tube G1 that connects between the input of described the 5th inductance L 5 and the ground wire, the described second anti-thunder tube G2 of series connection between the output of described the 4th inductance L 4 and the ground wire.
The withstand voltage of the described first anti-thunder tube G1 and described second lightning protection is 90V; after the voltage of Circuits System surpasses its withstand voltage; anti-thunder tube can be breakdown in the time of tens nanoseconds, the voltage of Circuits System maintained below the withstand voltage, thereby protected Circuits System.
The withstand voltage of described first capacitor C 1, described second capacitor C 2, described the 3rd capacitor C 3, described the 4th capacitor C 4, described the 5th capacitor C 5, described the 6th capacitor C 6 and described the 7th capacitor C 7 is more than 200V; the withstand voltage of electric capacity is chosen in more than the twice withstand voltage, and further the protective circuit system does not damage.
The filter that anti-lightning strike filter of the present utility model has overcome prior art lacks the defective of lightning protection function, prevents that filter from being punctured by thunder and lightning and cause normally received television signal.
In sum, above-mentioned execution mode is not to be restricted execution mode of the present utility model, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present utility model or equivalent deformation are all at technology category of the present utility model.
Claims (3)
1. anti-lightning strike filter, it is characterized in that: by first inductance, second inductance, the 3rd inductance, the 4th inductance, the 5th inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first anti-thunder tube and second anti-thunder tube are formed, described first inductance, described second inductance, described the 3rd inductance, described the 4th inductance and described the 5th inductance are connected in series, described first electric capacity is in parallel with described first inductance, described second electric capacity is in parallel with described second inductance, described the 3rd electric capacity and described the 3rd inductance, described the 4th electric capacity and described the 4th inductance parallel connection, described the 5th electric capacity of connecting between the junction of described first inductance and described second inductance and the ground wire, described the 6th electric capacity of connecting between the junction of described second inductance and described the 3rd inductance and the ground wire, described the 7th electric capacity of connecting between the junction of described the 3rd inductance and described the 4th inductance and the ground wire, described first anti-thunder tube of connecting between the input of described the 5th inductance and the ground wire, described second anti-thunder tube of series connection between the output of described the 4th inductance and the ground wire.
2. anti-lightning strike filter as claimed in claim 1, it is characterized in that: the withstand voltage of described first anti-thunder tube and described second lightning protection is 90V.
3. anti-lightning strike filter as claimed in claim 1, it is characterized in that: the withstand voltage of described first electric capacity, described second electric capacity, described the 3rd electric capacity, described the 4th electric capacity, described the 5th electric capacity, described the 6th electric capacity and described the 7th electric capacity is more than 200V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293729 CN203225714U (en) | 2013-05-24 | 2013-05-24 | Anti-lightning filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293729 CN203225714U (en) | 2013-05-24 | 2013-05-24 | Anti-lightning filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225714U true CN203225714U (en) | 2013-10-02 |
Family
ID=49252704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320293729 Expired - Fee Related CN203225714U (en) | 2013-05-24 | 2013-05-24 | Anti-lightning filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225714U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056853A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳市九洲电器有限公司 | Set-top box tuner protection device and protection method |
| CN109802653A (en) * | 2017-11-17 | 2019-05-24 | 和硕联合科技股份有限公司 | Filter circuit |
-
2013
- 2013-05-24 CN CN 201320293729 patent/CN203225714U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056853A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳市九洲电器有限公司 | Set-top box tuner protection device and protection method |
| CN109802653A (en) * | 2017-11-17 | 2019-05-24 | 和硕联合科技股份有限公司 | Filter circuit |
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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: 20131002 Termination date: 20200524 |