CN104734136A - Novel independent modular lightning protection circuit for CATV - Google Patents
Novel independent modular lightning protection circuit for CATV Download PDFInfo
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- CN104734136A CN104734136A CN201410539933.8A CN201410539933A CN104734136A CN 104734136 A CN104734136 A CN 104734136A CN 201410539933 A CN201410539933 A CN 201410539933A CN 104734136 A CN104734136 A CN 104734136A
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Abstract
The invention discloses a novel independent modular lightning protection circuit for CATV, and belongs to the technical field of CATV system lightning protection. The novel independent modular lightning protection circuit for the CATV solves the problems that a traditional lightning protection circuit can not be independent of a CATV equipment circuit, and hidden danger of damaging the CATV equipment circuit exists. The novel independent modular lightning protection circuit for the CATV mainly comprises a signal input end A and a signal input end B, a matched coil L1 is connected between the signal input end A and the signal input end B in series, the signal input end A and the matched coil L1 are connected with a first discharging device C in series, and the matched coil L1 and the signal input end B are connected with a second discharging device D in series. The novel independent modular lightning protection circuit for the CATV adopts brand new circuit design to enable the lightning protection circuit to be separated from the CATV equipment circuit and serve as an independent whole, the influence of the lightning protection circuit on the CATV equipment circuit can be effectively avoided, and in this way, even though strong lightning voltage and strong lightning current exist, the phenomenon of overburning and breaking down the CATV equipment circuit can not occur. The novel independent modular lightning protection circuit for the CATV is high in practical value and has breakthrough significance in the technical field of CATV system lightning protection.
Description
Technical field
The invention belongs to CATV system thunder defending technical field, specifically, particularly relate to the novel separate modular lightning protection circuit of a kind of CATV.
Background technology
Thunder and lightning is the electric discharge phenomena in a kind of air, usually makes cable television appliances badly damaged.In CATV system, shocking preventing technology is a very important job.At present, what CATV signal lighting protection circuit adopted is adds anti-fulgurite and 60VAC ac circuit at the input of CATV equipment, output and adds piezo-resistance and to release lightning current, and namely lightning protection circuit is a part of CATV circuitry.Although, this circuit design can play to a certain degree certain lets out thunder effect, but a lot of people does not consider that the voltage of thunder and lightning is very high, electric current is very large, it is thin that the wiring board circuit of adding CATV equipment applies copper thickness, and width is narrow, is easily burnt by wiring board, residue residual voltage also may puncture components and parts, greatly destructive.
Summary of the invention
The invention discloses the novel separate modular lightning protection circuit of a kind of CATV, independent of CATV circuitry, the problem of hitting and damaging CATV circuitry hidden danger can not be there is for solving traditional lightning protection circuit.
The present invention is achieved by the following technical solutions:
The novel separate modular lightning protection circuit of a kind of CATV, comprise signal input part A, signal output part B, described signal input part A is connected in series matched coil L1 with between signal output part B, described signal input part A is connected in series electric discharge device first C with matched coil L1, and described matched coil L1 is connected in series electric discharge device second D with signal output part B.
Described electric discharge device first C is discharge tube CT1, and discharge tube CT1 one end is connected with signal input part A, and the other end is ground connection then.
Described electric discharge device second D comprises discharge tube CT2, inductance L 2, electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end is connected with signal output part B, the discharge tube CT2 other end is connected with inductance L 2, inductance L 2 other end is connected with electric capacity C1 one end, the other end ground connection of electric capacity C1, described electric capacity C1 two ends are in parallel with voltage-limiting element XY.
Described voltage-limiting element XY is piezo-resistance RV1 or instantaneous suppression fast recovery diode TVS.
Described discharge tube CT1, discharge tube CT2 are gas discharge tube.
Described inductance L 2 is the real core inductance coil of band damping resistance.
Described electric capacity C1 is polyester film capacitor.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts brand-new circuit design, lightning protection circuit is departed from CATV circuitry, strong like this lightning voltage, strong lightning current as an independent integers, effectively prevent the impact of lightning protection circuit on CATV circuitry, even also can not burn the phenomenon puncturing CATV circuitry; In addition, the present invention changes conveniently, owing to being standalone module, after the present invention is smashed by thunder and lightning, and the module directly more renewed.As can be seen here, practical value of the present invention is very high, has breakthrough meaning in CATV system thunder defending technical field.
Accompanying drawing explanation
Fig. 1 is module frame chart of the present invention;
Fig. 2 is schematic diagram 1 of the present invention;
Fig. 3 is schematic diagram 2 of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
The novel separate modular lightning protection circuit of a kind of CATV, comprise signal input part A, signal output part B, described signal input part A is connected in series matched coil L1 with between signal output part B, described signal input part A is connected in series electric discharge device first C with matched coil L1, and described matched coil L1 is connected in series electric discharge device second D with signal output part B.
Described electric discharge device first C is discharge tube CT1, and discharge tube CT1 one end is connected with signal input part A, and the other end is ground connection then.
Described electric discharge device second D comprises discharge tube CT2, inductance L 2, electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end is connected with signal output part B, the discharge tube CT2 other end is connected with inductance L 2, inductance L 2 other end is connected with electric capacity C1 one end, the other end ground connection of electric capacity C1, described electric capacity C1 two ends are in parallel with voltage-limiting element XY.
Described voltage-limiting element XY is piezo-resistance RV1 or instantaneous suppression fast recovery diode TVS.
Described discharge tube CT1, discharge tube CT2 are gas discharge tube.
Described inductance L 2 is the real core inductance coil of band damping resistance.
Described electric capacity C1 is polyester film capacitor.
Described matched coil L1 is the square lead that the enamel covered wire of diameter 0.85mm is formed.
The signal of input signal A of the present invention and output signal B indication is radiofrequency signal RF and ac signal AC.
Embodiment 1: as shown in Figure of description Fig. 2, is connected in series matched coil L1 between signal input part A with signal output part B, discharge tube CT1 one end is connected with signal input part A, other end ground connection.Discharge tube CT2 one end is connected with signal output part B, and the other end is connected with inductance L 2, and the other end of inductance L 2 is connected with electric capacity C1 one end, the other end ground connection of electric capacity C1, and piezo-resistance RV1 is connected in parallel on electric capacity C1 two ends.When circuit is subjected to directly or after sensing thunderbolt, discharge tube CT1 punctures over the ground, forms discharge loop after discharge tube CT2, piezo-resistance RV1 puncture with inductance L 2 and lightning current is leaked into greatly.The real core inductance coil of electric capacity C1, inductance L 2 compensates piezo-resistance RV1 to the damage of signal.
Embodiment 2: as shown in Figure of description Fig. 3, is connected in series matched coil L1 between signal input part A with signal output part B, discharge tube CT1 one end is connected with signal input part A, other end ground connection.Discharge tube CT2 one end is connected with signal output part B, and the other end is connected with inductance L 2, and the other end of inductance L 2 is connected with electric capacity C1 one end, the other end ground connection of electric capacity C1, and instantaneous suppression fast recovery diode TVS is connected in parallel on electric capacity C1 two ends.When circuit is subjected to directly or after sensing thunderbolt, discharge tube CT1 punctures over the ground, forms discharge loop after discharge tube CT2, instantaneous suppression fast recovery diode TVS puncture with inductance L 2 and lightning current is leaked into greatly.Electric capacity C1, inductance L 2 real core inductance coil compensate instantaneous suppression fast recovery diode TVS to the damage of signal.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (7)
1. the novel separate modular lightning protection circuit of CATV, it is characterized in that: comprise signal input part A, signal output part B, described signal input part A is connected in series matched coil L1 with between signal output part B, described signal input part A is connected in series electric discharge device first C with matched coil L1, and described matched coil L1 is connected in series electric discharge device second D with signal output part B.
2. the novel separate modular lightning protection circuit of CATV according to claim 1, it is characterized in that: described electric discharge device first C is discharge tube CT1, discharge tube CT1 one end is connected with signal input part A, and the other end is ground connection then.
3. the novel separate modular lightning protection circuit of CATV according to claim 1, it is characterized in that: described electric discharge device second D comprises discharge tube CT2, inductance L 2, electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end is connected with signal output part B, the discharge tube CT2 other end is connected with inductance L 2, inductance L 2 other end is connected with electric capacity C1 one end, the other end ground connection of electric capacity C1, described electric capacity C1 two ends are in parallel with voltage-limiting element XY.
4. the novel separate modular lightning protection circuit of CATV according to claim 3, is characterized in that: described voltage-limiting element XY is piezo-resistance RV1 or instantaneous suppression fast recovery diode TVS.
5. the novel separate modular lightning protection circuit of CATV according to claim 1, is characterized in that: described discharge tube CT1, discharge tube CT2 are gas discharge tube.
6. the novel separate modular lightning protection circuit of CATV according to claim 1, is characterized in that: described inductance L 2 is the real core inductance coil of band damping resistance.
7. the novel separate modular lightning protection circuit of CATV according to claim 1, is characterized in that: described electric capacity C1 is polyester film capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539933.8A CN104734136B (en) | 2014-10-13 | 2014-10-13 | CATV separate modular lightning protection circuits |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539933.8A CN104734136B (en) | 2014-10-13 | 2014-10-13 | CATV separate modular lightning protection circuits |
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| CN104734136A true CN104734136A (en) | 2015-06-24 |
| CN104734136B CN104734136B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410539933.8A Active CN104734136B (en) | 2014-10-13 | 2014-10-13 | CATV separate modular lightning protection circuits |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786468A (en) * | 2017-02-20 | 2017-05-31 | 广州中大南沙科技创新产业园有限公司 | A kind of RS485 telecommunication equipment lightning protections and observation circuit |
| CN111404610A (en) * | 2020-03-24 | 2020-07-10 | 中航光电科技股份有限公司 | Remote system of satellite navigation signal |
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| CN2850087Y (en) * | 2005-12-16 | 2006-12-20 | 张宝林 | Wired television network power filtering lightning arrester |
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| CN101789595A (en) * | 2010-03-30 | 2010-07-28 | 江苏指南针导航通信技术有限公司 | Current-limiting type lightning induced surge voltage absorber |
| CN203103947U (en) * | 2012-12-28 | 2013-07-31 | 烟台东方电子衡器有限公司 | Lightning protector |
| CN203151086U (en) * | 2013-02-05 | 2013-08-21 | 中兴通讯股份有限公司 | Lightning-protection protective circuit |
| CN204131122U (en) * | 2014-10-13 | 2015-01-28 | 扬州豪峰电子电器有限公司 | The novel separate modular lightning protection circuit of CATV |
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2014
- 2014-10-13 CN CN201410539933.8A patent/CN104734136B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588637Y (en) * | 2002-09-06 | 2003-11-26 | 新疆金风科技股份有限公司 | Lightning protector for electric equipment |
| CN2850087Y (en) * | 2005-12-16 | 2006-12-20 | 张宝林 | Wired television network power filtering lightning arrester |
| CN201001035Y (en) * | 2007-01-05 | 2008-01-02 | 深圳市麦克海鹏信电子有限公司 | RF lightning protection device |
| CN101789595A (en) * | 2010-03-30 | 2010-07-28 | 江苏指南针导航通信技术有限公司 | Current-limiting type lightning induced surge voltage absorber |
| CN203103947U (en) * | 2012-12-28 | 2013-07-31 | 烟台东方电子衡器有限公司 | Lightning protector |
| CN203151086U (en) * | 2013-02-05 | 2013-08-21 | 中兴通讯股份有限公司 | Lightning-protection protective circuit |
| CN204131122U (en) * | 2014-10-13 | 2015-01-28 | 扬州豪峰电子电器有限公司 | The novel separate modular lightning protection circuit of CATV |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786468A (en) * | 2017-02-20 | 2017-05-31 | 广州中大南沙科技创新产业园有限公司 | A kind of RS485 telecommunication equipment lightning protections and observation circuit |
| CN111404610A (en) * | 2020-03-24 | 2020-07-10 | 中航光电科技股份有限公司 | Remote system of satellite navigation signal |
| CN111404610B (en) * | 2020-03-24 | 2022-10-11 | 中航光电科技股份有限公司 | Remote system of satellite navigation signal |
Also Published As
| Publication number | Publication date |
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| CN104734136B (en) | 2018-01-16 |
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