JPH0328857U - - Google Patents

Info

Publication number
JPH0328857U
JPH0328857U JP8994289U JP8994289U JPH0328857U JP H0328857 U JPH0328857 U JP H0328857U JP 8994289 U JP8994289 U JP 8994289U JP 8994289 U JP8994289 U JP 8994289U JP H0328857 U JPH0328857 U JP H0328857U
Authority
JP
Japan
Prior art keywords
telephone
speaker
base unit
microphone
amplifier
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
JP8994289U
Other languages
English (en)
Other versions
JPH073720Y2 (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 JP1989089942U priority Critical patent/JPH073720Y2/ja
Publication of JPH0328857U publication Critical patent/JPH0328857U/ja
Application granted granted Critical
Publication of JPH073720Y2 publication Critical patent/JPH073720Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

Description

【図面の簡単な説明】
第１図は本考案の拡声交互通話インターホン装
置のブロツク図、第２図は従来の拡声交互通話イ
ンターホン装置のブロツク図である。 Ｍ……親機、ＳＥ１，ＳＥ２，…ＳＥｎ……子
機、ＳＰ０……親機側マイクロホン兼用スピーカ
、ＳＰ１……子機側マイクロホン兼用スピーカ、
ＡＭＰ１，ＡＭＰ２……増幅器、ＳＷ０……通話
電鍵、ＳＷ１，ＳＷ２……第１、第２の半導体ス
イツチング素子、ｌ１，ｌ２……通話路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 相互に接続された親機および子機から成り、前
    記親機および前記子機にそれぞれ設けられた親機
    側マイクロホン兼用スピーカおよび子機側マイク
    ロホン兼用スピーカと、前記親機および前記子機
    の間に設けられた増幅器と、前記増幅器の通話方
    向を切換える通話電鍵と、前記増幅器の入力側に
    設けられ前記通話電鍵の切換操作に応じて前記親
    機側マイクロホン兼用スピーカおよび子機側マイ
    クロホ兼用スピーカの送信出力をそれぞれスイツ
    チングする第１、第２の半導体スイツチング素子
    とを備えたことを特徴とする拡声交互通話インタ
    ーホン装置。
JP1989089942U 1989-07-31 1989-07-31 拡声交互通話インターホン装置 Expired - Fee Related JPH073720Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989089942U JPH073720Y2 (ja) 1989-07-31 1989-07-31 拡声交互通話インターホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989089942U JPH073720Y2 (ja) 1989-07-31 1989-07-31 拡声交互通話インターホン装置

Publications (2)

Publication Number Publication Date
JPH0328857U true JPH0328857U (ja) 1991-03-22
JPH073720Y2 JPH073720Y2 (ja) 1995-01-30

Family

ID=31639492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989089942U Expired - Fee Related JPH073720Y2 (ja) 1989-07-31 1989-07-31 拡声交互通話インターホン装置

Country Status (1)

Country Link
JP (1) JPH073720Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203056A (ja) * 1984-03-28 1985-10-14 Toshiba Electric Equip Corp インタ−ホン装置
JPS6142164U (ja) * 1984-08-20 1986-03-18 アイホン株式会社 プレスト−ク・インタ−ホン装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203056A (ja) * 1984-03-28 1985-10-14 Toshiba Electric Equip Corp インタ−ホン装置
JPS6142164U (ja) * 1984-08-20 1986-03-18 アイホン株式会社 プレスト−ク・インタ−ホン装置

Also Published As

Publication number Publication date
JPH073720Y2 (ja) 1995-01-30

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Legal Events

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