JPH0756523Y2 - 電話回線保持回路 - Google Patents

電話回線保持回路

Info

Publication number
JPH0756523Y2
JPH0756523Y2 JP1989135221U JP13522189U JPH0756523Y2 JP H0756523 Y2 JPH0756523 Y2 JP H0756523Y2 JP 1989135221 U JP1989135221 U JP 1989135221U JP 13522189 U JP13522189 U JP 13522189U JP H0756523 Y2 JPH0756523 Y2 JP H0756523Y2
Authority
JP
Japan
Prior art keywords
telephone
line
lines
thyristor
resistance
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
JP1989135221U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0375649U (en]
Inventor
由文 辻井
晴夫 久野
Original Assignee
アイワ株式会社
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 アイワ株式会社 filed Critical アイワ株式会社
Priority to JP1989135221U priority Critical patent/JPH0756523Y2/ja
Publication of JPH0375649U publication Critical patent/JPH0375649U/ja
Application granted granted Critical
Publication of JPH0756523Y2 publication Critical patent/JPH0756523Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

JP1989135221U 1989-11-21 1989-11-21 電話回線保持回路 Expired - Lifetime JPH0756523Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989135221U JPH0756523Y2 (ja) 1989-11-21 1989-11-21 電話回線保持回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989135221U JPH0756523Y2 (ja) 1989-11-21 1989-11-21 電話回線保持回路

Publications (2)

Publication Number Publication Date
JPH0375649U JPH0375649U (en]) 1991-07-30
JPH0756523Y2 true JPH0756523Y2 (ja) 1995-12-25

Family

ID=31682501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989135221U Expired - Lifetime JPH0756523Y2 (ja) 1989-11-21 1989-11-21 電話回線保持回路

Country Status (1)

Country Link
JP (1) JPH0756523Y2 (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4621039B2 (ja) * 2005-02-22 2011-01-26 株式会社日立製作所 ディスク装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257643A (ja) * 1984-06-04 1985-12-19 Matsushita Electric Ind Co Ltd 電話回線保留回路

Also Published As

Publication number Publication date
JPH0375649U (en]) 1991-07-30

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