CN2369382Y - Lightning arrester for telephone - Google Patents
Lightning arrester for telephone Download PDFInfo
- Publication number
- CN2369382Y CN2369382Y CN 99211323 CN99211323U CN2369382Y CN 2369382 Y CN2369382 Y CN 2369382Y CN 99211323 CN99211323 CN 99211323 CN 99211323 U CN99211323 U CN 99211323U CN 2369382 Y CN2369382 Y CN 2369382Y
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- solid discharging
- thermistors
- input
- discharging tube
- tubes
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Abstract
The utility model provides a lightning arrester for a telephone, which is installed at the front end of a subscriber telephone or other terminal devices. The lightning arrester comprises a voltage threshold limiting unit. The rear of the voltage threshold limiting unit is connected with a current limiting unit which is connected with an output end. The voltage threshold limiting unit is connected with an input end, wherein, the threshold limiting unit is a solid discharge tube, and both ends of the solid discharge tube are respectively connected to the input end. The current limiting unit is composed of two thermal resistors which are respectively connected with one end of the solid discharge tube. The other end of each of the two thermal resistors is respectively connected to the output end.
Description
The utility model relates to a kind of device of the automatic protection to phone or other terminal equipment; at ordinary times, this device is stealthy on duty, does not influence normal use; and the line voltage distribution that has lightning induction or other reason to cause is when too high, the device that this device can be protected automatically to phone or other terminal equipment.
At present, the general ordinary telephone set that uses all is made up of electronic circuit and integrated circuit, and its shortcoming is withstand voltage low, fragile.Thereby be easy to invade telephone set or other terminal equipment at the thunderstorm season lightning induction, perhaps because other factors such as telephone wire cause high-tension electricity to invade telephone set or other terminal equipment with civil power feeder line mistake overlap joint, thereby make it damage.
The purpose of this utility model promptly provides a kind of phone lightning protection device; this phone lightning protection device be a kind ofly use that original paper is few, volume is little, passive, the device that is simple and easy to adorn; stealthy at ordinary times on duty; do not influence normal talking; telephone network is not exerted an influence, but at every moment monitoring the voltage of incoming line and flowing through protected equipment---the electric current of telephone set or other terminal equipment.The device that the utility model provides when the overtension on the incoming line moves at once, makes the high pressure limit threshold discharge of input, and restricted flow crosses the size of current of protected equipment, thereby telephone set or other terminal equipment are shielded.This device can also replace the telephone connection box.
The purpose of this utility model is achieved in that a kind of phone lightning protection device, it is mounted in the front end of subscriber phone or other terminal equipment, it is characterized in that, comprising voltage limit threshold unit, back in voltage limit threshold unit is connected with a current limitation unit, the current limitation unit connects output, and voltage limit threshold unit connects input.
Wherein said voltage limit threshold unit is a solid discharging tube, and the two ends of solid discharging tube are connected to input respectively; Described current limitation unit is two thermistors, and two thermistors are connected with an end of solid discharging tube respectively, and the other end of two thermistors is connected to output respectively.
Wherein voltage limit threshold unit is two solid discharging tubes, two solid discharging tube polyphones, ground connection between two solid discharging tubes, another termination input of two solid discharging tubes; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes respectively, and the other end of two thermistors is connected to output respectively.
Wherein voltage limit threshold unit is three solid discharging tubes, and wherein the two ends of a solid discharging tube are connected with input, and two solid discharging tubes are contacted ground connection between the solid discharging tube of two polyphones, another termination input of the solid discharging tube of two polyphones in addition; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of contacting respectively, and the other end of two thermistors is connected to output respectively.
Wherein said voltage limit threshold unit comprises a solid discharging tube, and the two ends of solid discharging tube are connected to input by a resistance respectively, before two resistance, be connected to a gas discharge tube between two inputs; Described current limitation unit is two thermistors, and two thermistors are connected with an end of solid discharging tube respectively, and the other end of two thermistors is connected to output respectively.
Wherein voltage limit threshold unit comprises two solid discharging tubes, two solid discharging tube polyphones, the other end of two solid discharging tubes connects input by a resistance, be in series with two gas discharge tubes before two resistance between two inputs, the two ends in addition of two gas discharge tubes of series connection connect input respectively, are connected and ground connection between the solid discharging tube of two series connection and between the gas discharge tube of two series connection; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of connecting respectively, and the other end of two thermistors is connected to output respectively.
Wherein voltage limit threshold unit comprises three solid discharging tubes, wherein the two ends of a solid discharging tube are connected with input by a resistance respectively, two solid discharging tubes are contacted in addition, the other end of the solid discharging tube of two polyphones also connects input by these two resistance respectively, three gas discharge tubes, two termination inputs of a gas discharge tube wherein, two gas discharge tube series connection in addition, the two termination inputs in addition of two gas discharge tubes of series connection are connected and ground connection between the solid discharging tube of two series connection and between the gas discharge tube of two series connection; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of contacting respectively, and the other end of two thermistors is connected to output respectively.
Effect for further specifying concrete structure of the present utility model and feature and can reaching is described in further detail the utility model below in conjunction with accompanying drawing, wherein:
Fig. 1 is a structure block schematic diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model embodiment 1.
Fig. 3 is the circuit theory diagrams of the utility model embodiment 2.
Fig. 4 is the circuit theory diagrams of the utility model embodiment 3.
Fig. 5 is the circuit theory diagrams of the utility model embodiment 4.
Fig. 6 is the circuit theory diagrams of the utility model embodiment 5.
Fig. 7 is the circuit theory diagrams of the utility model embodiment 6.
Provide 6 embodiment of the utility model according to Fig. 1-Fig. 7 below, further provide ins and outs of the present utility model by description to embodiment.
As shown in Figure 1; phone lightning protection device of the present utility model is the front end that is installed in subscriber phone or other terminal equipment; or be directly installed on a kind of lightning protection device of the interior forward end of subscriber phone or other terminal equipment, promptly between input A, the A ' of output B, the B ' of the front end of subscriber phone or other terminal equipment, this phone lightning protection device and phone feeder line, this phone lightning protection device.Comprising-voltage limit threshold unit 21, be connected with a current limitation unit 22 in the back of voltage limit threshold unit 21, current limitation unit 22 meets output B, B ', and voltage limit threshold unit 21 meets input A, A '.
Embodiment 1:
Provide a single-stage two end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 2.
See also shown in Figure 2ly, wherein said voltage limit threshold unit 21 is solid discharging tube TVS1, and the two ends of solid discharging tube TVS1 are connected to input A, A ' respectively; Described current limitation unit 22 is two thermistor RT1, RT2, and two thermistor RT1, RT2 are connected with the end of solid discharging tube TVS1 respectively, and the other end of two thermistor RT1, RT2 is connected to output B, B ' respectively.When between input A, the A ' high pressure being arranged, high pressure is by solid discharging tube TVS1 discharge, the residue residual voltage enters subscriber phone or other terminal equipment by thermistor RT1, RT2, and thermistor RT1, RT2 continue the electric current that monitor flows is crossed subscriber phone or other terminal equipment.Though make the voltage that enters not be higher than the threshold value of TVS1, and the current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment because have a variety of causes.At this moment, thermistor RT1, RT2 can generate heat because of the electric current that flows through is excessive, thereby its resistance is sharply increased, owing to limited the electric current in loop, have played the effect of protection telephone set or other terminal equipment.
Embodiment 2:
Provide a single-stage three end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 3.See also shown in Figure 3, wherein voltage limit threshold unit 21 is two solid discharging tube TVS1, TVS2, two solid discharging tube TVS1, TVS2 polyphones, earth terminal E between solid discharging tube TVS1, the TVS2 of two polyphones, another termination input A, the A ' of solid discharging tube TVS1, the TVS2 of two polyphones; Current limitation unit 22 is two thermistor RT1, RT2, two thermistor RT1, RT2 are connected with each end that meets input A, A ' of two solid discharging tube TVS1, the TVS2 that contact respectively, and the other end of two thermistor RT1, RT2 is connected to output B, B ' respectively.As input A; when A ' has high voltage between over the ground; high pressure is by solid discharging tube TVS2; TVS3 discharges over the ground; the residue residual voltage is by thermistor RT1; RT2 enters subscriber phone or other terminal equipment; and thermistor RT1; RT2 continues the electric current that monitor flows is crossed subscriber phone or other terminal equipment; if during the current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment; thermistor RT1; RT2 can generate heat because of the electric current that flows through is excessive; thereby its resistance is sharply increased; limit the electric current in loop thus, played the effect of protection telephone set or other terminal equipment.
Embodiment 3:
Provide another single-stage three end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 4.
Wherein voltage limit threshold unit 21 makes three solid discharging tube TVS1, TVS2, TVS3, wherein the two ends of a solid discharging tube TVS1 are connected with input A, A ', two solid discharging tube TVS2, TVS3 contact in addition, earth terminal E between solid discharging tube TVS2, the TVS3 of two polyphones, another termination input A, the A ' of solid discharging tube TVS2, the TVS3 of two polyphones; Current limitation unit 22 is two thermistor RT1, RT2, two thermistor RT1, RT2 are connected with each end that meets input A, A ' of two solid discharging tube TVS2, the TVS3 that contact respectively, and the other end of two thermistor RT1, RT2 is connected to output B, B ' respectively.When between input A, A ' are to earth terminal E high voltage being arranged, high pressure is held the E discharge over the ground by solid discharging tube TVS2, TVS3, and when between input A, the A ' high voltage being arranged, high pressure is by solid discharging tube TVS1 discharge.The residue residual voltage enters subscriber phone or other terminal equipment by thermistor RT1, RT2; and thermistor RT1, RT2 continue the electric current that monitor flows is crossed subscriber phone or other terminal equipment; if during the current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment; thermistor RT1, RT2 can generate heat because of the electric current that flows through is excessive; thereby its resistance is sharply increased; limit the electric current in loop thus, played the effect of protection telephone set or other terminal equipment.
Embodiment 4:
Provide a secondary two end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 5.Wherein said voltage limit threshold unit 21 comprises a solid discharging tube TVS1, the two ends of solid discharging tube TVS1 are connected to input A, A ' by a resistance R 1, R2 respectively, before two resistance R 1, R2, connect between two input A, the A ' by a gas discharge tube GDG1; Described current limitation unit 22 is two thermistor RT1, RT2, and two thermistor RT1, RT2 are connected with the end of solid discharging tube TVS1 respectively, and the other end of two thermistor RT1, RT2 is connected to output B, B ' respectively.As input A; when A ' has high voltage between over the ground; high pressure is by solid discharging tube GDD1 discharge; the residue residual voltage is by resistance R 1; R2 delivers to next stage voltage limit threshold; the current limliting unit; residual voltage is discharged by solid discharging tube TVS1; then via thermistor RT1; RT2 enters subscriber phone or other terminal equipment; and thermistor RT1; RT2 continues the electric current that monitor flows is crossed subscriber phone or other terminal equipment; when current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment; thermistor RT1; RT2 can generate heat because of the electric current that flows through is excessive; thereby its resistance is sharply increased; limit the electric current in loop thus, played the effect of protection telephone set or other terminal equipment.
Embodiment 5
Provide a secondary three end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 6.Wherein voltage limit threshold unit 21 comprises two solid discharging tube TVS2, TVS3, two solid discharging tube TVS2, TVS3 polyphones, the other end of two solid discharging tube TVS2, TVS3 meets input A, A ' by a resistance R 1, R2, be in series with two gas discharge tube GDG2, GDG3 before two resistance R 1, the R2 between two input A, the A ', the two ends in addition of two gas discharge tube GDG2, the GDG3 of series connection meet input A, A ' respectively, are connected and earth terminal E between solid discharging tube TVS2, the TVS3 of two series connection and between gas discharge tube GDG2, the GDG3 of two series connection; Current limitation unit 22 is two thermistor RT1, RT2, two thermistor RT1, RT2 are connected with each end that meets input A, A ' of two solid discharging tube TVS2, the TVS3 that connect respectively, and the other end of two thermistor RT1, RT2 is connected to output B, B ' respectively.When input A, A ' have high voltage between over the ground, high pressure discharges over the ground by gas discharge tube GDG2, GDG3, the residue residual voltage enters next stage voltage limit threshold, current limliting unit by resistance R 1, R2, voltage behind first order voltage limit threshold, current limliting unit is by solid discharging tube TVS2, the TVS3 step-down of discharging once more, and is sent to subscriber phone or other terminal equipment by thermistor RT1, RT2.And thermistor RT1, RT2 continue the electric current that monitor flows is crossed subscriber phone or other terminal equipment; if during the current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment; thermistor RT1, RT2 can generate heat because of the electric current that flows through is excessive; thereby its resistance is sharply increased; limit the electric current in loop thus, played the effect of protection telephone set or other terminal equipment.
Embodiment 6:
Provide another secondary three end phone lightning protection device devices of the present utility model according to Fig. 1 and Fig. 7.
Wherein voltage limit threshold unit 21 comprises three solid discharging tube TVS1, TVS2, TVS3, wherein the two ends of a solid discharging tube TVS1 are respectively by a resistance R 1, R2 and input A, A ' connects, other is two solid discharging tube TVS2, the TVS3 polyphone, the solid discharging tube TVS2 of two polyphones, the other end of TVS3 is also by resistance R 1, R2 meets input A, A ', three gas discharge tube GDG1, GDG2, GDG3, the two termination input A of a gas discharge tube GDG1 wherein, A ', other is two gas discharge tube GDG2, the GDG3 series connection, two gas discharge tube GDG2 of series connection, the two termination input A in addition of GDG3, A ', the solid discharging tube TVS2 of two series connection, between the TVS3 and two the series connection gas discharge tube GDG2, be connected between the GDG3 and earth terminal E; Current limitation unit 22 is two thermistor RT1, RT2, and two thermistor RT1, RT2 are connected with the end of two solid discharging tube TVS2, the TVS3 that contact respectively, and the other end of two temperature-sensitive RT1, RT2 is connected to output B, B ' respectively.As input A; A ' is between the earth terminal E during high voltage; high pressure is by solid discharging tube GDG2; GDG3 discharges over the ground; as input A; when between the A ' high voltage being arranged; high pressure is by gas discharge tube GDG1 discharge; the residue residual voltage is by resistance R 1; R2 enters the back level; through first order voltage limit threshold; after the current limliting cell processing; if in resistance R 1; R2 holds when still having high voltage between the E over the ground; high pressure discharges over the ground by solid discharging tube TVS2 or TVS3; when resistance R 1; when between the rear end of R2 high pressure being arranged; high pressure is by solid discharging tube TVS1 discharge; the residue residual voltage is by thermistor RT1; RT2 enters subscriber phone or other terminal equipment; and thermistor RT1; RT2 continues the electric current that monitor flows is crossed subscriber phone or other terminal equipment; if during the current value that the electric current that flows through the loop can bear greater than telephone set or other terminal equipment; thermistor RT1; RT2 can generate heat because of the electric current that flows through is excessive; thereby its resistance is sharply increased; limit the electric current in loop thus, played the effect of protection telephone set or other terminal equipment.
In sum, implement via the structure of this case, the utility model really can play the effect of protection telephone set or other terminal equipment.Have simultaneously simple in structure, passive, volume is little and the advantage that is simple and easy to adorn.
Claims (7)
1, a kind of phone lightning protection device, the front end that it is mounted in subscriber phone or other terminal equipment is characterized in that, comprising voltage limit threshold unit, back in voltage limit threshold unit is connected with a current limitation unit, and the current limitation unit connects output, and voltage limit threshold unit connects input.
2, phone lightning protection device according to claim 1 is characterized in that, wherein said voltage limit threshold unit is a solid discharging tube, and the two ends of solid discharging tube are connected to input respectively; Described current limitation unit is two thermistors, and two thermistors are connected with an end of solid discharging tube respectively, and two 1 ends of two thermistors are connected to output respectively.
3, phone lightning protection device according to claim 1 is characterized in that, wherein voltage limit threshold unit is two solid discharging tubes, two solid discharging tube polyphones, ground connection between two solid discharging tubes, another termination input of two solid discharging tubes; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes respectively, and the other end of two thermistors is connected to output respectively.
4, phone lightning protection device according to claim 1, it is characterized in that, wherein voltage limit threshold unit is three solid discharging tubes, the two ends of one of them solid discharging tube are connected with input, two solid discharging tubes are contacted in addition, ground connection between the solid discharging tube of two polyphones, another termination input of the solid discharging tube of two polyphones; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of contacting respectively, and the other end of two thermistors is connected to output respectively.
5, phone lightning protection device according to claim 1, it is characterized in that, wherein said voltage limit threshold unit comprises a solid discharging tube, and the two ends of solid discharging tube are connected to input by a resistance respectively, before two resistance, be connected to a gas discharge tube between two inputs; Described current limitation unit is two thermistors, and two thermistors are connected with an end of solid discharging tube respectively, and the other end of two thermistors is connected to output respectively.
6, phone lightning protection device according to claim 1, it is characterized in that, wherein voltage limit threshold unit comprises two solid discharging tubes, two solid discharging tube polyphones, the other end of two solid discharging tubes connects input by a resistance, be in series with two gas discharge tubes before two resistance between two inputs, the two ends in addition of two gas discharge tubes of series connection connect input respectively, are connected and ground connection between the solid discharging tube of two series connection and between the gas discharge tube of two series connection; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of connecting respectively, and the other end of two thermistors is connected to output respectively.
7, phone lightning protection device according to claim 1, it is characterized in that, wherein voltage limit threshold unit comprises three solid discharging tubes, wherein the two ends of a solid discharging tube are connected with input by a resistance respectively, two solid discharging tubes are contacted in addition, the other end of the solid discharging tube of two polyphones also connects input by resistance, three gas discharge tubes, two termination inputs of a gas discharge tube wherein, two gas discharge tube series connection in addition, the two termination inputs in addition of two gas discharge tubes of series connection are connected and ground connection between the solid discharging tube of two series connection and between the gas discharge tube of two series connection; The current limitation unit is two thermistors, and two thermistors are connected with an end that connects input of two solid discharging tubes of contacting respectively, and the other end of two thermistors is connected to output respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211323 CN2369382Y (en) | 1999-05-27 | 1999-05-27 | Lightning arrester for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211323 CN2369382Y (en) | 1999-05-27 | 1999-05-27 | Lightning arrester for telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2369382Y true CN2369382Y (en) | 2000-03-15 |
Family
ID=34004298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211323 Expired - Fee Related CN2369382Y (en) | 1999-05-27 | 1999-05-27 | Lightning arrester for telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2369382Y (en) |
-
1999
- 1999-05-27 CN CN 99211323 patent/CN2369382Y/en not_active Expired - Fee Related
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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 |