CN104734136B - CATV separate modular lightning protection circuits - Google Patents
CATV separate modular lightning protection circuits Download PDFInfo
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- CN104734136B CN104734136B CN201410539933.8A CN201410539933A CN104734136B CN 104734136 B CN104734136 B CN 104734136B CN 201410539933 A CN201410539933 A CN 201410539933A CN 104734136 B CN104734136 B CN 104734136B
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- catv
- lightning protection
- signal output
- signal input
- discharge tube
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Abstract
The invention discloses a kind of CATV separate modular lightning protection circuits, belong to CATV system thunder defending technical fields, and the problem of hitting damage CATV circuitry hidden danger can not be had independently of CATV circuitries by solving traditional lightning protection circuit.Mainly include signal input part A, signal output part B, matched coil L1, signal input part A and matched coil L1 are concatenated between signal input part A and signal output part B concatenate electric discharge device first C, matched coil L1 and signal output part B and concatenate electric discharge device second D.The present invention uses brand-new circuit design, lightning protection circuit is departed from CATV circuitries, it is independent overall as one, it effectively prevent influence of the lightning protection circuit to CATV circuitries, accordingly even when it is the phenomenon that strong lightning voltage, strong lightning current will not also burn breakdown CATV circuitries, the practical value of the present invention is very high, has breakthrough meaning in CATV system thunder defending technical fields.
Description
Technical field
The invention belongs to CATV system thunder defending technical fields, specifically, more particularly to a kind of CATV separate modulars
Lightning protection circuit.
Background technology
Thunder and lightning is the electric discharge phenomena in a kind of air, usually makes cable television appliances badly damaged.In CATV systems, prevent
Thunder technology is a highly important job.At present, CATV signal lighting protection circuits are using the input in CATV equipment, output
End plus anti-fulgurite and 60VAC ac circuit add piezo-resistance to release lightning current, i.e., lightning protection circuit is one of CATV circuitries
Part.Although this circuit design can serve to a certain degree it is certain let out thunder, many people do not consider thunder
The voltage of electricity is very high, and electric current is very big, along with the deposited copper thickness of the wiring board circuit of CATV equipment is thin, narrow width, easily will
Wiring board burns, and remaining residual voltage may also puncture component, destructive very big.
The content of the invention
, can not be independent for solving traditional lightning protection circuit the invention discloses a kind of CATV separate modular lightning protection circuits
In CATV circuitries, the problem of hitting damage CATV circuitry hidden danger be present.
The present invention is achieved by the following technical solutions：
A kind of CATV separate modular lightning protection circuits, including signal input part A, signal output part B, the signal input
Matched coil L1, the signal input part A, which are concatenated, between the A and signal output part B of end concatenates electric discharge device first with matched coil L1
It is discharge tube CT1 that C, the matched coil L1, which concatenate electric discharge device second D, the electric discharge device first C with signal output part B, electric discharge
Pipe CT1 one end is connected with signal input part A, and the other end is then grounded, the electric discharge device second D include discharge tube CT2, inductance L2,
Electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end are connected with signal output part B, the discharge tube CT2 other ends and inductance L2
One end is connected, and the inductance L2 other ends are connected with electric capacity C1 one end, electric capacity C1 other end ground connection, the electric capacity C1 both ends and pressure limiting
Element XY is in parallel.
The voltage-limiting element XY is that piezo-resistance RV1 or instantaneous suppresses fast recovery diode TVS.
The discharge tube CT1, discharge tube CT2 are gas-discharge tube.
The inductance L2 is band damping resistance reality core inductance coil.
The electric capacity C1 is polyester film capacitor.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention uses brand-new circuit design, and lightning protection circuit is departed from CATV circuitries, independent overall as one,
Influence of the lightning protection circuit to CATV circuitries is effectively prevent, accordingly even when being that strong lightning voltage, strong lightning current will not also occur
Burn the phenomenon of breakdown CATV circuitries；In addition, the present invention is changed conveniently, due to being standalone module, in the present invention by thunder and lightning
After smashing, the module that directly more renews.As can be seen here, practical value of the invention is very high, in CATV system thunder defending skills
Art field has breakthrough meaning.
Brief description of the drawings
Fig. 1 is module frame chart of the present invention；
Fig. 2 is the schematic diagram 1 of the present invention；
Fig. 3 is the schematic diagram 2 of the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：
A kind of CATV separate modular lightning protection circuits, including signal input part A, signal output part B, the signal input
Matched coil L1, the signal input part A, which are concatenated, between the A and signal output part B of end concatenates electric discharge device first with matched coil L1
It is discharge tube CT1 that C, the matched coil L1, which concatenate electric discharge device second D, the electric discharge device first C with signal output part B, electric discharge
Pipe CT1 one end is connected with signal input part A, and the other end is then grounded, the electric discharge device second D include discharge tube CT2, inductance L2,
Electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end are connected with signal output part B, the discharge tube CT2 other ends and inductance L2
One end is connected, and the inductance L2 other ends are connected with electric capacity C1 one end, electric capacity C1 other end ground connection, the electric capacity C1 both ends and pressure limiting
Element XY is in parallel.
The voltage-limiting element XY is that piezo-resistance RV1 or instantaneous suppresses fast recovery diode TVS.
The discharge tube CT1, discharge tube CT2 are gas-discharge tube.
The inductance L2 is band damping resistance reality core inductance coil.
The electric capacity C1 is polyester film capacitor.
The square lead that the enamel covered wire that the matched coil L1 is diameter 0.85mm is formed.
The signal that the input signal A and output signal B of the present invention are signified is radiofrequency signal RF and ac signal AC.
Embodiment 1：As shown in Figure of description Fig. 2, matched coil L1 is concatenated between signal input part A and 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, another
End is connected with inductance L2, and the inductance L2 other end is connected with electric capacity C1 one end, electric capacity C1 other end ground connection, piezo-resistance RV1
It is connected in parallel on electric capacity C1 both ends.When circuit is by directly or after sense thunderbolt, discharge tube CT1 punctures over the ground, discharge tube CT2,
Lightning current is leaked into the earth with inductance L2 composition discharge loops after piezo-resistance RV1 breakdown.Electric capacity C1, inductance L2 reality core inductor wires
Damages of the circle compensation piezo-resistance RV1 to signal.
Embodiment 2：As shown in Figure of description Fig. 3, matched coil L1 is concatenated between signal input part A and 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, another
End is connected with inductance L2, and the inductance L2 other end is connected with electric capacity C1 one end, electric capacity C1 other end ground connection, instantaneous to suppress fast extensive
Multiple diode TVS is connected in parallel on electric capacity C1 both ends.When circuit is by directly or after sense thunderbolt, discharge tube CT1 punctures over the ground,
Lightning current is leaked into the earth with inductance L2 composition discharge loops after discharge tube CT2, instantaneous suppression fast recovery diode TVS breakdown.
Electric capacity C1, the instantaneous damage for suppressing fast recovery diode TVS to signal of inductance L2 reality cores inductance coil compensation.
In summary, only presently preferred embodiments of the present invention, is not used for limiting the scope that the present invention is implemented, it is all according to
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in scope of the invention as claimed, this all should be included in
In the right of invention.
Claims (5)
- A kind of 1. CATV separate modular lightning protection circuits, it is characterised in that：Including signal input part A, signal output part B, institute State and matched coil L1 is concatenated between signal input part A and signal output part B, the signal input part A concatenates with matched coil L1 Electric discharge device first C, the matched coil L1 concatenate electric discharge device second D, the electric discharge device first C with signal output part B as electric discharge Pipe CT1, discharge tube CT1 one end are connected with signal input part A, and the other end is then grounded, and the electric discharge device second D includes discharge tube CT2, inductance L2, electric capacity C1, voltage-limiting element XY, described discharge tube CT2 one end are connected with signal output part B, and discharge tube CT2 is another End is connected with inductance L2 one end, and the inductance L2 other ends are connected with electric capacity C1 one end, electric capacity C1 other end ground connection, the electric capacity C1 Both ends are in parallel with voltage-limiting element XY.
- 2. CATV according to claim 1 separate modular lightning protection circuits, it is characterised in that：The voltage-limiting element XY is Piezo-resistance RV1 or instantaneous suppresses fast recovery diode TVS.
- 3. CATV according to claim 1 separate modular lightning protection circuits, it is characterised in that：The discharge tube CT1, put Fulgurite CT2 is gas-discharge tube.
- 4. CATV according to claim 1 separate modular lightning protection circuits, it is characterised in that：The inductance L2 is that band hinders Buffer resistance reality core inductance coil.
- 5. CATV according to claim 1 separate modular lightning protection circuits, it is characterised in that：The electric capacity C1 is polyester Thin-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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539933.8A CN104734136B (en) | 2014-10-13 | 2014-10-13 | CATV separate modular lightning protection circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104734136A CN104734136A (en) | 2015-06-24 |
| CN104734136B true CN104734136B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539933.8A Active CN104734136B (en) | 2014-10-13 | 2014-10-13 | CATV separate modular lightning protection circuits |
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Families Citing this family (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 |
| 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 |
Citations (6)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-10-13 CN CN201410539933.8A patent/CN104734136B/en active Active
Patent Citations (6)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104734136A (en) | 2015-06-24 |
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