JPS61430U - Line protector with test circuit - Google Patents
Line protector with test circuitInfo
- Publication number
- JPS61430U JPS61430U JP8346884U JP8346884U JPS61430U JP S61430 U JPS61430 U JP S61430U JP 8346884 U JP8346884 U JP 8346884U JP 8346884 U JP8346884 U JP 8346884U JP S61430 U JPS61430 U JP S61430U
- Authority
- JP
- Japan
- Prior art keywords
- test circuit
- line protector
- zener diode
- protector
- test
- 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.)
- Pending
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【図面の簡単な説明】
第１図は回線保安器の従来例の回路図、第２図は本考案
に係る試験回路付回線保安器の一実施例の原理を示すた
めの回路図、第３図及び第４図は夫々第２図の回路の一
及ひ他の態様を示す回路図、第５図は上記試験回路付回
線保安器の一実施例の回路図である。
１，２・・・放電管、３，４・・・ツエナーダイオード
、５， ６， ９， １０・・・抵抗、７，８・
・・発光ダイオード、１１．１３・・・直流電源、１２
・・・通信機器。[Brief Description of the Drawings] Fig. 1 is a circuit diagram of a conventional line protector, Fig. 2 is a circuit diagram showing the principle of an embodiment of a line protector with a test circuit according to the present invention, and Fig. 3 is a circuit diagram of a conventional line protector. 4 and 4 are circuit diagrams showing one and other aspects of the circuit shown in FIG. 2, respectively, and FIG. 5 is a circuit diagram of one embodiment of the line protector with test circuit described above. 1, 2...Discharge tube, 3,4...Zener diode, 5, 6, 9, 10...Resistor, 7,8...
...Light emitting diode, 11.13...DC power supply, 12
...Communication equipment.
Claims (1)
ードにより通信機器を保護する回線保安器において、該
ツエナータイオード以外に、発光ダイオード、その保護
用抵抗、及び試験用端子よりなる試験回路を設け、該試
験用端子に外部から一定電圧を加えた際該発光ダイオー
ドの点灯の可否により、上記ツエナーダイオードの性能
を判別するよう構成した試験回路付回線保安器。In a line protector that uses a Zener diode to protect communication equipment when abnormal voltage is induced in a communication line, a test circuit consisting of a light emitting diode, a protective resistor, and a test terminal is installed in addition to the Zener diode. A circuit protector with a test circuit configured to determine the performance of the Zener diode based on whether or not the light emitting diode lights up when a constant voltage is applied from the outside to the test terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346884U JPS61430U (en) | 1984-06-05 | 1984-06-05 | Line protector with test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346884U JPS61430U (en) | 1984-06-05 | 1984-06-05 | Line protector with test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61430U true JPS61430U (en) | 1986-01-06 |
Family
ID=30632126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8346884U Pending JPS61430U (en) | 1984-06-05 | 1984-06-05 | Line protector with test circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61430U (en) |
-
1984
- 1984-06-05 JP JP8346884U patent/JPS61430U/en active Pending
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