CN201733086U - Two-port surge protection device for separation and protection of wired television feed signals - Google Patents
Two-port surge protection device for separation and protection of wired television feed signals Download PDFInfo
- Publication number
- CN201733086U CN201733086U CN2010202007182U CN201020200718U CN201733086U CN 201733086 U CN201733086 U CN 201733086U CN 2010202007182 U CN2010202007182 U CN 2010202007182U CN 201020200718 U CN201020200718 U CN 201020200718U CN 201733086 U CN201733086 U CN 201733086U
- Authority
- CN
- China
- Prior art keywords
- circuit
- protection
- signal
- feed signal
- electric feed
- 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
- 238000000926 separation method Methods 0.000 title abstract description 4
- 230000001012 protector Effects 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 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
- 238000011084 recovery Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a special two-port surge protection device for protection of wired television signal equipment, which is characterized by consisting of a first-stage current-leaking voltage-limiting circuit, a feed signal separation circuit, a feed protection circuit, a signal protection circuit and a feed signal collection circuit. The special two-port surge protection device is characterized in that the adoption of an advanced three-stage two-port surge protection circuit structure can effectively protect current leakage and voltage limit to protect the safety of electric equipment on overcurrent and overvoltage generated by surge invading along a signal line, and simultaneously according to the characteristics of the wired television trunk equipment, on the design of the circuit structure, the feed signal separation and collection structure is adopted to carry out targeted protection design on a feed part and a signal part respectively. Therefore, the protection is more comprehensive, the performance is more reliable, more effective protection is provided for the wired television trunk equipment.
Description
Technical field
The utility model relates to a kind of surge protector, particularly does the surge protector of equipment such as level signalling arrangement such as trunk fiber receiver, trunk amplifier and plant maintenance work personal safety at cable TV.
Background technology
Along with cable TV network is constantly fast-developing, cable TV has become people's necessary part of living, and increasing people has enjoyed the joy that cable TV brings, and has enriched people's life greatly.But because the cable TV transmission network network spreads all over town and country, optical cable, cable line are crossed over various complex-terrains, and it is the peak season that cable television system breaks down that thunderstorm season becomes.This annual time, a large amount of cable TV trunk equipments suffers that thunderbolt damages, the repairing difficulty is big when not only having caused national loss but also many remote places often the cable TV trunk equipment damaging, the time that therefore generally may need several weeks or some months to recovery from signal interruption, so when country suffers a loss, also had a strong impact on people's normal life, carried out lightning protection work to guaranteeing that the broadcast of cable TV safely high-quality, minimizing national loss and people's normal life influence are vital.
In recent years, occurred a large amount of cable TV lightning protection devices on the market, but be the signal section of electric feed signal equipment and feed part not to be protected design respectively all, with a kind of structure electric feed signal equipment has been protected but directly use.Because the operating voltage of signal circuit and withstand voltage are all far below the operating voltage and the withstand voltage of feed circuit; directly adopt with a kind of structure and often protect weak effect and through-current capacity also very little, install and still occur the accident damaged behind the lightning protection device so constantly occur a large amount of cable TV trunk equipments in recent years.Therefore the two port surge protectors of developing a kind of cable TV electric feed signal separation protection have become pressing for of broadcasting and TV cable TV industry and people.
The utility model content
The purpose of this utility model provides the two port surge protectors that a kind of cable TV electric feed signal is separated protection.It not only separates with signal feed according to the characteristics of cable TV trunk equipment and carries out specific aim protection design more respectively; advanced three grades two port surge protecting circuit structures have been adopted simultaneously; can improve the surge and the lightning protection ability of surge device greatly effectively to the surge generation overcurrent of invading, the personal safety that overvoltage is carried out earial drainage voltage-limiting protection equipment and plant maintenance person along signal line.
The technical scheme that the utility model is taked:
Compiling circuit by one-level earial drainage pressure limiting circuit, electric feed signal split circuit, feed protection circuit, signal guard circuit and electric feed signal forms; One end of signal line is that circuit input end connects the one-level bleeder circuit, be the electric feed signal split circuit then, the electric feed signal split circuit connects feed protection circuit and signal guard circuit simultaneously, and recently compiling the other end that circuit connects signal line by electric feed signal is output.
One-level earial drainage pressure limiting circuit is made up of gas discharge tube 1, the electric feed signal split circuit is made up of inductance 3 and electric capacity 6, the feed protection circuit is made up of piezo-resistance 8,9,10 and inductance 4, and signal guard circuit is made up of discharge tube 2, and electric feed signal is compiled circuit and is made up of inductance 5 and electric capacity 7.
Characteristics of the present utility model and advantage:
According to the characteristics of cable TV trunk equipment feed is separated with signal and to carry out specific aim protection design more respectively; adopted advanced three grades two ports (tandem type) surge protecting circuit structure simultaneously; this has improved the surge and the lightning protection ability of surge device greatly; more perfect and the safety and reliability of performance is for the cable TV trunk equipment provides more effectively protection.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model.
Embodiment
The utility model compiles circuit by one-level bleeder circuit, electric feed signal split circuit, feed protection circuit, signal guard circuit and electric feed signal and forms.
One end of signal line is that circuit input end connects one-level earial drainage pressure limiting circuit, is the one-level current-limiting circuit then, connects the clamp circuit pressure limiting again, arrives the secondary current-limiting circuit again, and the other end through final stage bleeder circuit connection signal line is an output at last.
One end of signal line is that circuit input end connects the one-level bleeder circuit, be the electric feed signal split circuit then, the electric feed signal split circuit connects feed protection circuit and signal guard circuit simultaneously, and recently compiling the other end that circuit connects signal line by electric feed signal is output.
One-level earial drainage pressure limiting circuit is made up of gas discharge tube 1, the electric feed signal split circuit is made up of inductance 3 and electric capacity 6, the feed protection circuit is made up of piezo-resistance 8,9,10 and inductance 4, and signal guard circuit is made up of discharge tube 2, and electric feed signal is compiled circuit and is made up of inductance 5 and electric capacity 7.
Electrical principle of the present utility model as shown in Figure 1; when occurring thunder and lightning (or surge) transient impact electric current on the circuit; earlier carry out the earial drainage first time by discharge tube 1; the electric feed signal split circuit of forming by inductance 3 and electric capacity 6 respectively is to the overcurrent of different frequency remaining behind the first time earial drainage again; overvoltage and electric feed signal are separated, the high frequency overcurrent; overvoltage (the overcurrent overvoltage that can cause signal circuit in the protected equipment to damage) and signal by electric capacity 6 enter into the signal guard circuit formed by discharge tube 2 and by discharge tube 2 carry out earial drainage and voltage clamp with voltage limit in the scope that equipment is stipulated.And the overcurrent of low frequency, overvoltage (overcurrent except that overcurrent that enters into signal guard circuit and overvoltage and overvoltage) and feed enter into by piezo-resistance 8,9,10 and inductance 4 by inductance 3 and form the feed protection circuit, after carrying out the earial drainage second time by piezo-resistance 8,9, carry out earial drainage and voltage clamp for the third time by piezo-resistance 10 again through current-limiting inductance 4, voltage limit in the scope of equipment regulation, is compiled circuit and feed and signal are compiled once more outputed to B and hold by is made of electric feed signal inductance 5 and electric capacity 7 at last.
Determine that now each components and parts Specifeca tion speeification is as follows:
The turn-on voltage of gas discharge tube 1 be 250V to 420V, maximum discharge current (8/20 μ s waveform) 20kA is to 50kA.
The turn-on voltage of gas discharge tube 2 be 60V to 250V, maximum discharge current (8/20 μ s waveform) 10kA is to 30kA.
The withstand voltage of inductance 3,4 is not less than 3000V, and capacitance is that 1000pF is to 10000pF.
The withstand voltage of electric capacity 5,6,7 is not less than 1600V, rated current be 6 to 12A maximum discharge current (8/20 μ s waveform) 20kA to 50kA.
The turn-on voltage of piezo-resistance 8,9,10 be 100V to 280V, maximum discharge current (8/20 μ s waveform) 3kA is to 12kA.
Claims (7)
1. a cable TV electric feed signal is separated the two port surge protectors that protect, and it is characterized in that:
Compiling circuit by one-level earial drainage pressure limiting circuit, electric feed signal split circuit, feed protection circuit, signal guard circuit and electric feed signal forms;
One end of signal line is that circuit input end connects the one-level bleeder circuit, be the electric feed signal split circuit then, the electric feed signal split circuit connects feed protection circuit and signal guard circuit simultaneously, and recently compiling the other end that circuit connects signal line by electric feed signal is output.
2. cable TV electric feed signal according to claim 1 is separated two port surge protectors of protection; it is characterized in that: one-level earial drainage pressure limiting circuit is made up of gas discharge tube (1); the electric feed signal split circuit is made up of inductance (3) and electric capacity (6); the feed protection circuit is made up of piezo-resistance (8,9,10) and inductance (4); signal guard circuit is made up of discharge tube (2), and electric feed signal is compiled circuit and is made up of inductance (5) and electric capacity (7).
3. cable TV electric feed signal according to claim 2 is separated two port surge protectors of protection, it is characterized in that: the turn-on voltage of gas discharge tube (1) be 250V to 420V, maximum discharge current 20kA is to 50kA.
4. cable TV electric feed signal according to claim 2 is separated two port surge protectors of protection, it is characterized in that: the turn-on voltage of gas discharge tube (2) be 60V to 250V, maximum discharge current 10kA is to 30kA.
5. cable TV electric feed signal according to claim 2 is separated two port surge protectors of protection, and it is characterized in that: the withstand voltage of inductance (3,4) is not less than 3000V, and capacitance is that 1000pF is to 10000pF.
6. cable TV electric feed signal according to claim 2 is separated two port surge protectors of protection, and it is characterized in that: the withstand voltage of electric capacity (5,6,7) is not less than 1600V, and rated current is 6 to 12A, and maximum discharge current 20kA is to 50kA.
7. cable TV electric feed signal according to claim 2 is separated two port surge protectors of protection, it is characterized in that: the turn-on voltage of piezo-resistance (8,9,10) be 100V to 280V, maximum discharge current 3kA is to 12kA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202007182U CN201733086U (en) | 2010-05-24 | 2010-05-24 | Two-port surge protection device for separation and protection of wired television feed signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202007182U CN201733086U (en) | 2010-05-24 | 2010-05-24 | Two-port surge protection device for separation and protection of wired television feed signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733086U true CN201733086U (en) | 2011-02-02 |
Family
ID=43524242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202007182U Expired - Fee Related CN201733086U (en) | 2010-05-24 | 2010-05-24 | Two-port surge protection device for separation and protection of wired television feed signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683261A (en) * | 2013-12-30 | 2014-03-26 | 山东兆宇电子技术有限公司 | Optical transceiver equipotential arrester |
-
2010
- 2010-05-24 CN CN2010202007182U patent/CN201733086U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683261A (en) * | 2013-12-30 | 2014-03-26 | 山东兆宇电子技术有限公司 | Optical transceiver equipotential arrester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201813153U (en) | Anti-surging device of high-performance serial port | |
| CN201733086U (en) | Two-port surge protection device for separation and protection of wired television feed signals | |
| CN2907023Y (en) | A device for suppressing DC bias current of AC transformer | |
| CN201556936U (en) | Surge protection device of video multifunctional combination | |
| CN201498984U (en) | Lightning protection circuit of video monitoring equipment | |
| CN208890365U (en) | A kind of the power lightning protection circuit and lightning protection power source of 5G communication base station | |
| CN208401544U (en) | A kind of over-voltage protector of energy-absorbing cumulative | |
| CN203883458U (en) | Detachable lightning protection module applicable to residual current operated circuit breaker | |
| CN203180507U (en) | High-capacity overvoltage absorber | |
| CN205646796U (en) | Mining monitoring substation surge protection circuit | |
| CN102904213B (en) | A kind of lightning protection structure of transformator counterattack shunting | |
| CN204992567U (en) | Lightning protection circuit | |
| CN115954848A (en) | Anti-strong lightning surge prevents burning multichannel and keeps apart ground connection's device | |
| CN204333949U (en) | A kind of protection against lightning surge circuit for navigation mark equipment | |
| CN102931592A (en) | Lightning-protection power distribution cabinet | |
| CN103259248B (en) | A kind of guard grating | |
| CN202524073U (en) | Overvoltage protection circuit and communication equipment | |
| CN201985523U (en) | Portable surge protection device of power supplies and signals | |
| CN205565714U (en) | Lightning protection device with thunder and lightning frequency conversion inhibit feature | |
| CN105186480A (en) | Lightning protection circuit | |
| CN216772954U (en) | Dual-purpose lightning arrester | |
| CN205811537U (en) | Signal spark gap | |
| CN210183010U (en) | Surge protection circuit | |
| CN202172272U (en) | Network signal lightning protection device | |
| CN202888825U (en) | Novel surge protection device (SPD) |
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: 20110202 Termination date: 20160524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |