JPH0312514B2 - - Google Patents

Info

Publication number
JPH0312514B2
JPH0312514B2 JP5957786A JP5957786A JPH0312514B2 JP H0312514 B2 JPH0312514 B2 JP H0312514B2 JP 5957786 A JP5957786 A JP 5957786A JP 5957786 A JP5957786 A JP 5957786A JP H0312514 B2 JPH0312514 B2 JP H0312514B2
Authority
JP
Japan
Prior art keywords
circuit
photocoupler
current
loop
loop detection
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
Application number
JP5957786A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62241493A (ja
Inventor
Masaya Kuwano
Yoshihiro Kawada
Hiroshi Wakabayashi
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric Co Ltd
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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP5957786A priority Critical patent/JPS62241493A/ja
Publication of JPS62241493A publication Critical patent/JPS62241493A/ja
Publication of JPH0312514B2 publication Critical patent/JPH0312514B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
JP5957786A 1986-03-19 1986-03-19 ル−プ検出回路 Granted JPS62241493A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5957786A JPS62241493A (ja) 1986-03-19 1986-03-19 ル−プ検出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5957786A JPS62241493A (ja) 1986-03-19 1986-03-19 ル−プ検出回路

Publications (2)

Publication Number Publication Date
JPS62241493A JPS62241493A (ja) 1987-10-22
JPH0312514B2 true JPH0312514B2 (en]) 1991-02-20

Family

ID=13117223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5957786A Granted JPS62241493A (ja) 1986-03-19 1986-03-19 ル−プ検出回路

Country Status (1)

Country Link
JP (1) JPS62241493A (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0757033B2 (ja) * 1988-06-20 1995-06-14 日通工株式会社 局線インタフェース回路
JPH0459665U (en]) * 1990-10-01 1992-05-21

Also Published As

Publication number Publication date
JPS62241493A (ja) 1987-10-22

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