JPH0386649U - - Google Patents

Info

Publication number
JPH0386649U
JPH0386649U JP14710789U JP14710789U JPH0386649U JP H0386649 U JPH0386649 U JP H0386649U JP 14710789 U JP14710789 U JP 14710789U JP 14710789 U JP14710789 U JP 14710789U JP H0386649 U JPH0386649 U JP H0386649U
Authority
JP
Japan
Prior art keywords
telephone line
polarity
diode
telephone
resistor
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.)
Granted
Application number
JP14710789U
Other languages
English (en)
Japanese (ja)
Other versions
JPH089947Y2 (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 JP1989147107U priority Critical patent/JPH089947Y2/ja
Publication of JPH0386649U publication Critical patent/JPH0386649U/ja
Application granted granted Critical
Publication of JPH089947Y2 publication Critical patent/JPH089947Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP1989147107U 1989-12-22 1989-12-22 線路極性検知回路 Expired - Fee Related JPH089947Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989147107U JPH089947Y2 (ja) 1989-12-22 1989-12-22 線路極性検知回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989147107U JPH089947Y2 (ja) 1989-12-22 1989-12-22 線路極性検知回路

Publications (2)

Publication Number Publication Date
JPH0386649U true JPH0386649U (de) 1991-09-02
JPH089947Y2 JPH089947Y2 (ja) 1996-03-21

Family

ID=31693639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989147107U Expired - Fee Related JPH089947Y2 (ja) 1989-12-22 1989-12-22 線路極性検知回路

Country Status (1)

Country Link
JP (1) JPH089947Y2 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207755A (ja) * 1982-02-09 1983-12-03 Iwatsu Electric Co Ltd 極性反転検知回路
JPS61131948A (ja) * 1984-11-30 1986-06-19 Toshiba Corp ベル着信回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207755A (ja) * 1982-02-09 1983-12-03 Iwatsu Electric Co Ltd 極性反転検知回路
JPS61131948A (ja) * 1984-11-30 1986-06-19 Toshiba Corp ベル着信回路

Also Published As

Publication number Publication date
JPH089947Y2 (ja) 1996-03-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees