JPH02150891U - - Google Patents

Info

Publication number
JPH02150891U
JPH02150891U JP5818989U JP5818989U JPH02150891U JP H02150891 U JPH02150891 U JP H02150891U JP 5818989 U JP5818989 U JP 5818989U JP 5818989 U JP5818989 U JP 5818989U JP H02150891 U JPH02150891 U JP H02150891U
Authority
JP
Japan
Prior art keywords
incoming signal
varistor
pulse
detection device
incoming
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
Application number
JP5818989U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP5818989U priority Critical patent/JPH02150891U/ja
Publication of JPH02150891U publication Critical patent/JPH02150891U/ja
Pending legal-status Critical Current

Links

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  • Interface Circuits In Exchanges (AREA)
JP5818989U 1989-05-19 1989-05-19 Pending JPH02150891U (cs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5818989U JPH02150891U (cs) 1989-05-19 1989-05-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5818989U JPH02150891U (cs) 1989-05-19 1989-05-19

Publications (1)

Publication Number Publication Date
JPH02150891U true JPH02150891U (cs) 1990-12-27

Family

ID=31583570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5818989U Pending JPH02150891U (cs) 1989-05-19 1989-05-19

Country Status (1)

Country Link
JP (1) JPH02150891U (cs)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361905A (en) * 1976-11-16 1978-06-02 Tokyo Rokuon Kougiyou Kk Telephone calling signal detector
JPS54122012A (en) * 1978-03-16 1979-09-21 Nec Corp Ringing-signal detection circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361905A (en) * 1976-11-16 1978-06-02 Tokyo Rokuon Kougiyou Kk Telephone calling signal detector
JPS54122012A (en) * 1978-03-16 1979-09-21 Nec Corp Ringing-signal detection circuit

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