CN201584776U - Surge protector of telephone network system - Google Patents
Surge protector of telephone network system Download PDFInfo
- Publication number
- CN201584776U CN201584776U CN2009202946370U CN200920294637U CN201584776U CN 201584776 U CN201584776 U CN 201584776U CN 2009202946370 U CN2009202946370 U CN 2009202946370U CN 200920294637 U CN200920294637 U CN 200920294637U CN 201584776 U CN201584776 U CN 201584776U
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- line
- circuit
- diode
- gas discharge
- discharge tube
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Abstract
The utility model discloses a surge protector of a telephone network system, comprising a line I, a line II and a grounding line, wherein the protector is successively provided with a gas discharge tube circuit, an inductive circuit and a diode circuit from an input end to an output end; the gas discharge tube circuit is a gas discharge tube connected between the line I and the line II, and the gas discharge tube is connected into the grounding line; and the inductive circuit is an inductor which is arranged between the gas discharge tube circuit and the diode circuit and are respectively connected on the line I and the line II in series. As the technical scheme is adopted, the surge protector can protect the telephone network system reliably from being damaged by lightning stroke and surge current and has simple structure, low cost and convenient use.
Description
Technical field
The utility model relates to a kind of surge protector.
Background technology
Surge voltage can produce harm greatly to electrical equipment, therefore surge protective device must be set.The surge protective device that existing telephone network system is used, complex structure, cost is higher, uses also inconvenient.Thereby need the novel surge protector of telephone network system of research and development to overcome above-mentioned defective.
The utility model content
Technical problem to be solved in the utility model just provides a kind of simple in structure, and is with low cost, reliability height, surge protector of telephone network system easy to use.
For solving the problems of the technologies described above; the utility model adopts following technical scheme: surge protector of telephone network system; comprise a line, two wires and ground wire; it is characterized in that: described protector is disposed with gas discharge tube circuit, inductive circuit and diode circuit by input to output; described gas discharge tube circuit be a line with the two wires between the gas discharge tube that is connected; gas discharge tube inserts ground wire, and described inductive circuit is an inductance that is serially connected in respectively between gas discharge tube circuit and diode circuit on a line, the two wires.
As preferably, described diode circuit comprises five diodes that are provided with between a line and two wires, wherein first and second diode cathode are serially connected between a line and two wires positive pole, third and fourth diode cathode anticathode is serially connected between a described line and two wires line, and be provided with bypass line between first and the 3rd diode cathode end, bidirectional diode of serial connection on the described bypass line, and first and the 3rd diode cathode end insert ground wire respectively.Forward is provided with a diode on from first diode cathode end to the circuit of ground wire, from the 3rd diode cathode end to the circuit of ground wire on negative sense a diode is set.
The utility model can be avoided thunderbolt and surge current harm by the reliable protection telephone network system owing to adopted technique scheme, and simple in structure, with low cost, easy to use.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1; embodiment for the utility model telephone system surge protector; surge protector of telephone network system; comprise a line, two wires and ground wire; described protector is disposed with gas discharge tube circuit, inductive circuit and diode circuit by input to output; described gas discharge tube circuit be a line with the two wires between the gas discharge tube that is connected, gas discharge tube inserts ground wire.Described diode circuit comprises five diodes that are provided with between a line and two wires, wherein first and second diode cathode are serially connected between a line and two wires positive pole, third and fourth diode cathode anticathode is serially connected between a described line and two wires line, and be provided with bypass line between first and the 3rd diode cathode end, bidirectional diode of serial connection on the described bypass line, and first and the 3rd diode cathode end insert ground wire respectively.Forward is provided with a diode on from first diode cathode end to the circuit of ground wire, from the 3rd diode cathode end to the circuit of ground wire on negative sense a diode is set.Described inductive circuit is an inductance that is serially connected in respectively between gas discharge tube circuit and diode circuit on a line, the two wires.The circuit board of described surge protecting circuit places on the interior support of a metal shell, and corresponding input and output interface are set on the shell.Among Fig. 1, D1 is first diode, D2 is second diode, D3 is the 3rd diode, and D4 is the 4th diode, and D5 is that the 5th diode is bidirectional diode, D6 be from first diode cathode end to the circuit of ground wire on the diode that is provided with of forward, D7 be from the 3rd diode cathode end to the circuit of ground wire on the diode that is provided with of negative sense, G is the gas discharge tube between a line and two wires, L1, L2 are respectively the inductance of connecting on a line, the two wires.
This surge protector of telephone network system is applicable to the lightning protection anti-surge protection of front ends such as telephone set, facsimile machine, modulator-demodulator.In telephone network system; when the front end string of telephone set has this lightning protection anti-surge protector; under normal circumstances; protector and the earth are in high-impedance state; when system the surge overvoltage occurs and reaches the discharge voltage of protector because of thunderbolt or other reasons; protector can be immediately in time nanosecond rapidly and the earth conducting; powerful surge current is introduced the earth; thereby equipment such as telephone set have been protected; protector returns to the high-impedance state with the earth again after this surge voltage disappears, and does not influence the normal operation of telephone network system.
Claims (3)
1. surge protector of telephone network system; comprise a line, two wires and ground wire; it is characterized in that: described protector is disposed with gas discharge tube circuit, inductive circuit and diode circuit by input to output; described gas discharge tube circuit be a line with the two wires between the gas discharge tube that is connected; gas discharge tube inserts ground wire, and described inductive circuit is an inductance that is serially connected in respectively between gas discharge tube circuit and diode circuit on a line, the two wires.
2. surge protector of telephone network system according to claim 1; it is characterized in that: described diode circuit comprises five diodes that are provided with between a line and two wires; wherein first and second diode cathode are serially connected between a line and two wires positive pole; third and fourth diode cathode anticathode is serially connected between a described line and two wires line; and be provided with bypass line between first and the 3rd diode cathode end; bidirectional diode of serial connection on the described bypass line, and first and the 3rd diode cathode end insert ground wire respectively.
3. surge protector of telephone network system according to claim 2; it is characterized in that: forward is provided with a diode on from first diode cathode end to the circuit of ground wire, from the 3rd diode cathode end to the circuit of ground wire on negative sense a diode is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202946370U CN201584776U (en) | 2009-12-21 | 2009-12-21 | Surge protector of telephone network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202946370U CN201584776U (en) | 2009-12-21 | 2009-12-21 | Surge protector of telephone network system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584776U true CN201584776U (en) | 2010-09-15 |
Family
ID=42726789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202946370U Expired - Fee Related CN201584776U (en) | 2009-12-21 | 2009-12-21 | Surge protector of telephone network system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752860A (en) * | 2009-12-21 | 2010-06-23 | 浙江恒丰光电技术有限公司 | Surge protector of telephone network system |
| CN104022497A (en) * | 2014-05-27 | 2014-09-03 | 华为技术有限公司 | Protective circuit and electronic equipment |
-
2009
- 2009-12-21 CN CN2009202946370U patent/CN201584776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752860A (en) * | 2009-12-21 | 2010-06-23 | 浙江恒丰光电技术有限公司 | Surge protector of telephone network system |
| CN104022497A (en) * | 2014-05-27 | 2014-09-03 | 华为技术有限公司 | Protective circuit and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20121221 |