JPH062438Y2 - 交流電源式公衆電話機の雷害防止回路 - Google Patents
交流電源式公衆電話機の雷害防止回路Info
- Publication number
- JPH062438Y2 JPH062438Y2 JP1987198353U JP19835387U JPH062438Y2 JP H062438 Y2 JPH062438 Y2 JP H062438Y2 JP 1987198353 U JP1987198353 U JP 1987198353U JP 19835387 U JP19835387 U JP 19835387U JP H062438 Y2 JPH062438 Y2 JP H062438Y2
- Authority
- JP
- Japan
- Prior art keywords
- varistor
- ground
- power supply
- overvoltage
- input lines
- 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.)
- Expired - Lifetime
Links
- 230000002265 prevention Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 101000785063 Homo sapiens Serine-protein kinase ATM Proteins 0.000 description 1
- 102100020824 Serine-protein kinase ATM Human genes 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198353U JPH062438Y2 (ja) | 1987-12-26 | 1987-12-26 | 交流電源式公衆電話機の雷害防止回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198353U JPH062438Y2 (ja) | 1987-12-26 | 1987-12-26 | 交流電源式公衆電話機の雷害防止回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01105337U JPH01105337U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-07-17 |
| JPH062438Y2 true JPH062438Y2 (ja) | 1994-01-19 |
Family
ID=31488868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987198353U Expired - Lifetime JPH062438Y2 (ja) | 1987-12-26 | 1987-12-26 | 交流電源式公衆電話機の雷害防止回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062438Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7037323B2 (ja) * | 2017-10-04 | 2022-03-16 | キヤノン株式会社 | 通信装置 |
| CN109888760B (zh) * | 2019-03-12 | 2023-10-20 | 北京山图有源防雷科技有限公司 | 一种电气设备的安全保护装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5267928U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1975-11-17 | 1977-05-19 | ||
| JPS5928836A (ja) * | 1982-08-05 | 1984-02-15 | 日本電信電話株式会社 | 縦サ−ジ防護用筐体接地回路 |
-
1987
- 1987-12-26 JP JP1987198353U patent/JPH062438Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01105337U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-07-17 |