JPH02128455U - - Google Patents

Info

Publication number
JPH02128455U
JPH02128455U JP3593489U JP3593489U JPH02128455U JP H02128455 U JPH02128455 U JP H02128455U JP 3593489 U JP3593489 U JP 3593489U JP 3593489 U JP3593489 U JP 3593489U JP H02128455 U JPH02128455 U JP H02128455U
Authority
JP
Japan
Prior art keywords
channel selection
collective entrance
entrance machine
machine
circuit
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
JP3593489U
Other languages
English (en)
Other versions
JPH0635566Y2 (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 JP1989035934U priority Critical patent/JPH0635566Y2/ja
Publication of JPH02128455U publication Critical patent/JPH02128455U/ja
Application granted granted Critical
Publication of JPH0635566Y2 publication Critical patent/JPH0635566Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Description

【図面の簡単な説明】
第１図は本考案による集合玄関機の選局回路の
一実施例を示す回路図、第２図は従来の集合玄関
機の選局回路の回路図である。 ＳＷ１……呼出釦、ＲＹ１……選局継電器、Ｑ
１，Ｑ２……トランジスタ（選局継電器保持回路
）。

Claims (1)

    【実用新案登録請求の範囲】
  1. 複数の居室機と、前記複数の居室機に対応した
    呼出釦を備えた集合玄関機と、前記複数の呼出釦
    の１つを押下したとき動作し、前記集合玄関機の
    通話回路を対応する居室機に接続する選局継電器
    と、前記動作した選局継電器だけを保持し、その
    他の保持中の選局継電器を解除する選局継電器保
    持回路とを備えた集合玄関機の選局回路。
JP1989035934U 1989-03-29 1989-03-29 集合玄関機の選局回路 Expired - Fee Related JPH0635566Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989035934U JPH0635566Y2 (ja) 1989-03-29 1989-03-29 集合玄関機の選局回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989035934U JPH0635566Y2 (ja) 1989-03-29 1989-03-29 集合玄関機の選局回路

Publications (2)

Publication Number Publication Date
JPH02128455U true JPH02128455U (ja) 1990-10-23
JPH0635566Y2 JPH0635566Y2 (ja) 1994-09-14

Family

ID=31541719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989035934U Expired - Fee Related JPH0635566Y2 (ja) 1989-03-29 1989-03-29 集合玄関機の選局回路

Country Status (1)

Country Link
JP (1) JPH0635566Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160556U (ja) * 1984-09-25 1986-04-23
JPS6160555U (ja) * 1984-09-25 1986-04-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160556U (ja) * 1984-09-25 1986-04-23
JPS6160555U (ja) * 1984-09-25 1986-04-23

Also Published As

Publication number Publication date
JPH0635566Y2 (ja) 1994-09-14

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Legal Events

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