JPS521437A - Surge protection system - Google Patents
Surge protection systemInfo
- Publication number
- JPS521437A JPS521437A JP7674475A JP7674475A JPS521437A JP S521437 A JPS521437 A JP S521437A JP 7674475 A JP7674475 A JP 7674475A JP 7674475 A JP7674475 A JP 7674475A JP S521437 A JPS521437 A JP S521437A
- Authority
- JP
- Japan
- Prior art keywords
- protection system
- surge protection
- electronization
- varistor
- communication device
- 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
Abstract
PURPOSE: A surge protection system for communication device capable of easily achieving electronization of exchange speech path without using lighting conductor, varistor or the like.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7674475A JPS521437A (en) | 1975-06-24 | 1975-06-24 | Surge protection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7674475A JPS521437A (en) | 1975-06-24 | 1975-06-24 | Surge protection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS521437A true JPS521437A (en) | 1977-01-07 |
Family
ID=13614101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7674475A Pending JPS521437A (en) | 1975-06-24 | 1975-06-24 | Surge protection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS521437A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01105204A (en) * | 1987-07-03 | 1989-04-21 | Unitika Ltd | Polarization film and its manufacture |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244081A1 (en) * | 1972-09-08 | 1974-03-28 | Peter Kofahl | INPUT PROTECTIVE CIRCUIT FOR SENSITIVE DEVICE INPUTS |
-
1975
- 1975-06-24 JP JP7674475A patent/JPS521437A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244081A1 (en) * | 1972-09-08 | 1974-03-28 | Peter Kofahl | INPUT PROTECTIVE CIRCUIT FOR SENSITIVE DEVICE INPUTS |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01105204A (en) * | 1987-07-03 | 1989-04-21 | Unitika Ltd | Polarization film and its manufacture |
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