JPS63141544U - - Google Patents
Info
- Publication number
- JPS63141544U JPS63141544U JP3287487U JP3287487U JPS63141544U JP S63141544 U JPS63141544 U JP S63141544U JP 3287487 U JP3287487 U JP 3287487U JP 3287487 U JP3287487 U JP 3287487U JP S63141544 U JPS63141544 U JP S63141544U
- Authority
- JP
- Japan
- Prior art keywords
- protection element
- terminal
- communication device
- communication
- secondary protection
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuses (AREA)
Description
第１図は本考案の１実施例の回路図、第２図は
従来の保護回路の回路図である。
１１……ダイアツク（大エネルギー用保護素子
）、１２……ツエナーダイオード（小エネルギー
用保護素子）、１３，１４……ヒユーズ、ＯＰ１
，ＯＰ２……外線側端子、ＣＯ１，ＣＯ２……通
信機側端子。
FIG. 1 is a circuit diagram of one embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional protection circuit. 11...Diac (protection element for large energy), 12...Zener diode (protection element for small energy), 13, 14...Fuse, OP1
, OP2...Outside line side terminal, CO1, CO2...Communication device side terminal.
Claims (1)
ース端子との間に大エネルギー用の１次保護素子
と小エネルギー用の２次保護素子をそれぞれ並列
に接続し、外線側端子と前記１次保護素子端子の
間および前記１次保護素子端子と前記２次保護素
子端子の間にそれぞれヒユーズを前記通信線に直
列に接続することを特徴とする通信装置の保護回
路。 A primary protection element for large energy and a secondary protection element for small energy are connected in parallel between each of the two communication lines connected to the communication device and the ground terminal, and the external line side terminal and the A protection circuit for a communication device, characterized in that a fuse is connected in series to the communication line between the secondary protection element terminals and between the primary protection element terminal and the secondary protection element terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287487U JPS63141544U (en) | 1987-03-06 | 1987-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287487U JPS63141544U (en) | 1987-03-06 | 1987-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63141544U true JPS63141544U (en) | 1988-09-19 |
Family
ID=30839959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3287487U Pending JPS63141544U (en) | 1987-03-06 | 1987-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63141544U (en) |
-
1987
- 1987-03-06 JP JP3287487U patent/JPS63141544U/ja active Pending