CN200959512Y - Overvoltage and lightning resisting circuit and device for TV-set, telephone and computer - Google Patents
Overvoltage and lightning resisting circuit and device for TV-set, telephone and computer Download PDFInfo
- Publication number
- CN200959512Y CN200959512Y CN 200620035622 CN200620035622U CN200959512Y CN 200959512 Y CN200959512 Y CN 200959512Y CN 200620035622 CN200620035622 CN 200620035622 CN 200620035622 U CN200620035622 U CN 200620035622U CN 200959512 Y CN200959512 Y CN 200959512Y
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- lightning protection
- branch road
- electronic module
- overvoltage
- input
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Abstract
The utility model relates to a television, a telephone, an over voltage proof of computer, a lightning proof circuit and device, consisting of three lightning and over voltage proof branches. The first stage lightning proof branch consists of two same type lightning proof elements which are in series, and the connecting part of the two lightning proof elements connect with the ground, the two ends of the first stage lightning proof branch connects with the outer line. Second stage lightning proof branch consists of a pressure sensitive resistance, and the second stage lightning proof branch is parallel with the first stage lightning proof branch. The third stage lightning proof branch consists of an electronic module whose input terminal is in parallel with two ends of the second stage lightning proof branch, the input terminal of the electronic module connects with a last stage circuit. When the voltage of the electric module input terminal is under the set value, the electric module input terminal conducts with the output terminal, when the voltage of the electric module input terminal is or is above the set value, the electric module input terminal brakes with the output terminal. The utility model can prevent high voltage caused by line accident and the lightning disturbance, which can play the function of protecting the circuit without damage.
Description
(1) technical field:
The utility model relates to a kind of anti-overvoltage, lightning protection circuit, especially for anti-overvoltage, the lightning protection circuit at the input port place of television set, telephone set, computer and adopt anti-overvoltage, the lightning protection device of this circuit.
(2) background technology:
The input port of present television set, telephone set, computer is not established effectively anti-overvoltage, lightning protection device; therefore can not prevent the overvoltage impact; when producing overvoltage because of accident on the signal line or causing high pressure, cause the damage of terminal equipments such as television set, telephone set and computer through regular meeting because of damage to crops caused by thunder.
(3) utility model content:
The utility model will disclose a kind of signal of television set, telephone set and computer or anti-overvoltage, lightning protection circuit at voltage input end place be located at.
This television set, telephone set, the anti-overvoltage of computer, lightning protection circuit, comprise three lightning protection branch roads, wherein the identical lightning protection component series connection of two models of route formation is propped up in first order lightning protection, and the junction ground connection of two lightning protection components, and the two ends of first order lightning protection branch road are connected with outside line; Second level lightning protection is propped up piezo-resistance of route and is constituted, and lightning protection branch road in the second level is in parallel with first order lightning protection branch road; The anti-overvoltage branch road of the third level comprises an electronic module, and the input of electronic module is in parallel with the two ends of second level lightning protection branch road, and the output of electronic module is connected with late-class circuit; When the voltage of electronic module input when set point is following, the input of electronic module and output conducting, when the voltage of electronic module input met or exceeded set point, the input of electronic module and output disconnected.
Respectively be in series with a protective tube on the output of electronic module respectively.
Described lightning protection component is piezo-resistance, discharge tube, TVS pipe or TSS pipe.
The voltage limiting value sum of two lightning protection components is greater than the voltage limiting value of piezo-resistance on the secondary lightning protection branch road wherein and on the lightning protection branch road, and the voltage limiting value of piezo-resistance is greater than the voltage limiting value of electronic module on the secondary lightning protection branch road.
Television set described in the utility model, telephone set, the anti-overvoltage of computer, lightning protection device comprise above-mentioned anti-overvoltage, lightning protection circuit.
This product can prevent the unexpected high voltage that produces of circuit, and the high voltage that causes of damage to crops caused by thunder, plays the effect that protection electrical equipment is not damaged.Also be fit to be installed in TV, phone, computer and other electric equipment and circuit link place.It has adopted three grades of safeguard procedures, and different protection magnitudes of voltage is set as required, and different voltage, different elements protect, and establishes protective tube simultaneously and carries out overcurrent protection.Simultaneously, also can be installed in as required on the power-supply device,, also can install and protect as power input part part of computer.The first order is made up of lightning protection component, and the second level is made of electronic circuit module the piezo-resistance or the third level, can be under certain voltage effect the automatic disconnection circuit, play the effect of protection fully.
(4) description of drawings:
Fig. 1 is the circuit theory diagrams of a kind of execution mode of anti-overvoltage described in the utility model, lightning protection circuit.
Fig. 2 is the structural representation of a kind of execution mode of anti-overvoltage described in the utility model, lightning protection device.
(5) embodiment:
Television set, telephone set, the anti-overvoltage of computer, lightning protection circuit in the execution mode of Fig. 1, comprise the lightning protection branch road, first order lightning protection branch road 1 is made of two identical lightning protection component A series connection of model, and described lightning protection component A is a piezo-resistance, can certainly be discharge tube, TVS pipe or TSS pipe.The junction ground connection of two lightning protection component A, the two ends of first order lightning protection branch road 1 are connected with outside line.The voltage limiting value sum of two lightning protection component A is 300V.Second level lightning protection branch road 2 is made of a piezo-resistance R, and second level lightning protection branch road 2 is in parallel with first order lightning protection branch road 1, and the voltage limiting value of piezo-resistance R is 200V; The anti-overvoltage branch road 3 of the third level comprises an electronic module 4, and the input of electronic module 4 is in parallel with the two ends of second level lightning protection branch road 2, and the output of electronic module 4 is connected with late-class circuit; The voltage limiting value of electronic module 4 is that 100V works as the voltage of electronic module 4 inputs when set point is following, the input of electronic module 4 and output conducting, when the voltage of electronic module 4 inputs meets or exceeds set point, the input of electronic module 4 and output disconnect, and respectively are in series with a protective tube 7 on the output of electronic module 4 respectively.
In the execution mode of Fig. 2, this television set, telephone set, computer is prevented overvoltage, lightning protection device comprises input port 5 and output port 6, between input port 5 and output port 6, be this television set, telephone set, computer is prevented overvoltage, lightning protection circuit, it is television set, telephone set, computer is prevented overvoltage, input and this television set of lightning protection circuit, telephone set, computer is prevented overvoltage, the input port 5 of lightning protection device connects television set, telephone set, computer is prevented overvoltage, the output of lightning protection circuit and television set, telephone set, computer is prevented overvoltage, the output port 6 of lightning protection device connects.
Claims (8)
1, television set, telephone set, the anti-overvoltage of computer, lightning protection circuit, comprise the lightning protection branch road, it is characterized in that: first order lightning protection branch road (1) is made of two identical lightning protection components of model (A) series connection, and the junction ground connection of two lightning protection components (A), the two ends of first order lightning protection branch road (1) are connected with outside line; Second level lightning protection branch road (2) is made of a piezo-resistance (R), and second level lightning protection branch road (2) is in parallel with first order lightning protection branch road (1); The anti-overvoltage branch road (3) of the third level comprises an electronic module (4), and the input of electronic module (4) is in parallel with the two ends of second level lightning protection branch road (2), and the output of electronic module (4) is connected with late-class circuit; When the voltage of electronic module (4) input when set point is following, the input of electronic module (4) and output conducting, when the voltage of electronic module (4) input met or exceeded set point, the input of electronic module (4) and output disconnected.
2, television set according to claim 1, telephone set, the anti-overvoltage of computer, lightning protection circuit is characterized in that: respectively be in series with a protective tube on the output of electronic module (4) respectively.
3, television set according to claim 1, telephone set, the anti-overvoltage of computer, lightning protection circuit is characterized in that: described lightning protection component (A) is piezo-resistance, discharge tube, TVS pipe or TSS pipe.
4, television set according to claim 1, telephone set, the anti-overvoltage of computer, lightning protection circuit, it is characterized in that: wherein and the voltage limiting value sum of last two lightning protection components of lightning protection branch road (1) (A) go up the voltage limiting value of piezo-resistance (R) greater than secondary lightning protection branch road (2), secondary lightning protection branch road (2) is gone up the voltage limiting value of the voltage limiting value of piezo-resistance (R) greater than electronic module (4).
5, television set, telephone set, the anti-overvoltage of computer, lightning protection device, comprise input port and output port, input port and output port are provided with anti-overvoltage, lightning protection circuit, it is characterized in that: first order lightning protection branch road (1) is made of two identical lightning protection components of model (A) series connection, and the junction ground connection of two lightning protection components (A), the two ends of first order lightning protection branch road (1) are connected with outside line; Second level lightning protection branch road (2) is made of a piezo-resistance (R), and second level lightning protection branch road (2) is in parallel with first order lightning protection branch road (1); The anti-overvoltage branch road (3) of the third level comprises an electronic module (4), and the input of electronic module (4) is in parallel with the two ends of second level lightning protection branch road (2), and the output of electronic module (4) is connected with late-class circuit; When the voltage of electronic module (4) input when set point is following, the input of electronic module (4) and output conducting, when the voltage of electronic module (4) input met or exceeded set point, the input of electronic module (4) and output disconnected.
6, television set according to claim 5, telephone set, the anti-overvoltage of computer, lightning protection device is characterized in that: respectively be in series with a protective tube on the output of electronic module (4) respectively.
7, television set according to claim 5, telephone set, the anti-overvoltage of computer, lightning protection circuit is characterized in that: described lightning protection component (A) is piezo-resistance, discharge tube, TVS pipe or TSS pipe.
8, television set according to claim 5, telephone set, the anti-overvoltage of computer, lightning protection circuit, it is characterized in that: wherein and the voltage limiting value sum of last two lightning protection components of lightning protection branch road (1) (A) go up the voltage limiting value of piezo-resistance (R) greater than secondary lightning protection branch road (2), secondary lightning protection branch road (2) is gone up the voltage limiting value of the voltage limiting value of piezo-resistance (R) greater than electronic module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620035622 CN200959512Y (en) | 2006-09-15 | 2006-09-15 | Overvoltage and lightning resisting circuit and device for TV-set, telephone and computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620035622 CN200959512Y (en) | 2006-09-15 | 2006-09-15 | Overvoltage and lightning resisting circuit and device for TV-set, telephone and computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200959512Y true CN200959512Y (en) | 2007-10-10 |
Family
ID=38786392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620035622 Expired - Fee Related CN200959512Y (en) | 2006-09-15 | 2006-09-15 | Overvoltage and lightning resisting circuit and device for TV-set, telephone and computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200959512Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107568A1 (en) * | 2016-12-16 | 2018-06-21 | 宇龙计算机通信科技(深圳)有限公司 | Protection device, power supply device and terminal |
-
2006
- 2006-09-15 CN CN 200620035622 patent/CN200959512Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107568A1 (en) * | 2016-12-16 | 2018-06-21 | 宇龙计算机通信科技(深圳)有限公司 | Protection device, power supply device and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |