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
Application number
JP1987198353U
Other languages
English (en)
Japanese (ja)
Other versions
JPH01105337U (en]
Inventor
菊磨 岩佐
隆 神山
幹彦 小原
賢一 木村
幸一 矢島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1987198353U priority Critical patent/JPH062438Y2/ja
Publication of JPH01105337U publication Critical patent/JPH01105337U/ja
Application granted granted Critical
Publication of JPH062438Y2 publication Critical patent/JPH062438Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP1987198353U 1987-12-26 1987-12-26 交流電源式公衆電話機の雷害防止回路 Expired - Lifetime JPH062438Y2 (ja)

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 (en]) 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 (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267928U (en]) * 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

Also Published As

Publication number Publication date
JPH01105337U (en]) 1989-07-17

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