CN204271635U - A kind of lightning protection circuit of wired TV amplifier - Google Patents
A kind of lightning protection circuit of wired TV amplifier Download PDFInfo
- Publication number
- CN204271635U CN204271635U CN201420700964.2U CN201420700964U CN204271635U CN 204271635 U CN204271635 U CN 204271635U CN 201420700964 U CN201420700964 U CN 201420700964U CN 204271635 U CN204271635 U CN 204271635U
- Authority
- CN
- China
- Prior art keywords
- discharge tube
- amplifier
- fusible link
- lightning
- piezo
- Prior art date
- 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
Links
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Amplifiers (AREA)
Abstract
The utility model discloses a kind of lightning protection circuit of wired TV amplifier, at the power unit of amplifier, by discharge tube RH1, fusible link BX1, piezo-resistance YM, the electrical connection of fusible link BX2, discharge tube RH2 order.The beneficial effects of the utility model are that after amplifier is struck by lightning, lightning protection circuit is by thunder and lightning by discharge tube and piezo-resistance ground connection earial drainage, and fusible link fuses simultaneously, thus the main prototype part of guard amplifier is not damaged.
Description
Technical field
The utility model relates to cable television technology field, is specifically related to a kind of lightning protection circuit of wired TV amplifier.
Background technology
At present, in traditional wired TV amplifier, lightning protection circuit is made up of a discharge tube, and during thunderbolt, discharge tube was once lose efficacy, and thunder and lightning enters circuit can cause damage to the main prototype part of amplifier, causes damage to user.
Utility model content
The utility model is to solve the problem; devise a kind of lightning protection circuit of wired TV amplifier; when amplifier is struck by lightning, discharge tube and piezo-resistance are cut off the electricity supply by thunder and lightning ground connection earial drainage with after being fused by fusible link, thus the main prototype part of guard amplifier is not damaged.
The utility model solves the technical scheme that its technical problem adopts: be connected with one end of discharge tube RH1 at fusible link BX1, the other end ground connection of discharge tube RH1, the other end of fusible link BX1 is connected with one end of fusible link BX2 with piezo-resistance YM, the other end ground connection of piezo-resistance YM, the other end of fusible link BX2 is connected with discharge tube RH2, the other end ground connection of discharge tube RH2, when there being thunder and lightning to enter circuit, discharge tube RH1 or discharge tube RH2, piezo-resistance YM is by thunder and lightning ground connection earial drainage, fusible link BX1 or fusible link BX2 fuses simultaneously, thus cut off the electricity supply, realize the object of amplifier lightning protection.
The beneficial effects of the utility model are, by the protection of discharge tube, fusible link and piezo-resistance, anti-lightning strike effective, and circuit structure is simple.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of amplifier lightning protection circuit described in the utility model.
In figure, RH1, discharge tube 1, BX1, fusible link 1, YM, piezo-resistance, BX2, fusible link 2, RH2, discharge tube 2.
Embodiment
In the drawings, fusible link BX1 is connected with one end of discharge tube RH1, the other end ground connection of discharge tube RH1, the other end of fusible link BX1 is connected with one end of fusible link BX2 with piezo-resistance YM, and the other end ground connection of piezo-resistance YM, the other end of fusible link BX2 are connected with discharge tube RH2, the other end ground connection of discharge tube RH2.When there being thunder and lightning to enter circuit, discharge tube RH1 or discharge tube RH2, piezo-resistance YM are by thunder and lightning ground connection earial drainage, and fusible link BX1 or fusible link BX2 fuses simultaneously, thus realizes the object of amplifier lightning protection.For ensureing sensitivity and the stability of lightning protection circuit, the withstand voltage of discharge tube RH1 and discharge tube RH2 gets 230V, and the withstand voltage of piezo-resistance gets 2 times of operating voltage.
Technique scheme only embodies the optimal technical scheme of technical solutions of the utility model; those skilled in the art all embody principle of the present utility model to some variations that wherein some part may be made, and belong within protection range of the present utility model.
Claims (1)
1. the lightning protection circuit of a wired TV amplifier, comprise discharge tube RH1, fusible link BX1, piezo-resistance YM, the electrical connection of fusible link BX2, discharge tube RH2 order, it is characterized in that fusible link BX1 is connected with one end of discharge tube RH1, the other end ground connection of discharge tube RH1, the other end of fusible link BX1 is connected with one end of fusible link BX2 with piezo-resistance YM, and the other end ground connection of piezo-resistance YM, the other end of fusible link BX2 are connected with discharge tube RH2, the other end ground connection of discharge tube RH2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420700964.2U CN204271635U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning protection circuit of wired TV amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420700964.2U CN204271635U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning protection circuit of wired TV amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271635U true CN204271635U (en) | 2015-04-15 |
Family
ID=52806480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420700964.2U Expired - Fee Related CN204271635U (en) | 2014-11-21 | 2014-11-21 | A kind of lightning protection circuit of wired TV amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI605657B (en) * | 2016-08-31 | 2017-11-11 | CATV amplifier system and its power converter |
-
2014
- 2014-11-21 CN CN201420700964.2U patent/CN204271635U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI605657B (en) * | 2016-08-31 | 2017-11-11 | CATV amplifier system and its power converter |
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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: 20150415 Termination date: 20171121 |