JPS5826257U - button telephone device - Google Patents

button telephone device

Info

Publication number
JPS5826257U
JPS5826257U JP11873381U JP11873381U JPS5826257U JP S5826257 U JPS5826257 U JP S5826257U JP 11873381 U JP11873381 U JP 11873381U JP 11873381 U JP11873381 U JP 11873381U JP S5826257 U JPS5826257 U JP S5826257U
Authority
JP
Japan
Prior art keywords
signal
button telephone
telephone device
pair
main
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
JP11873381U
Other languages
Japanese (ja)
Inventor
黒田　政輝
杉浦　隆三
相川　忠太
Original Assignee
株式会社田村電機製作所
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 株式会社田村電機製作所 filed Critical 株式会社田村電機製作所
Priority to JP11873381U priority Critical patent/JPS5826257U/en
Publication of JPS5826257U publication Critical patent/JPS5826257U/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図は本考案の実施例を示す要部回路図である。 ＫＳＵ・・・主装置、ＳＴ１〜ＳＴ□・・・子機、ＳＬ
□、ＳＬ２・・・信号線、Ｒ１−Ｒ１・・・抵抗器、Ｄ
ｌ、　Ｄ２・・・ダイオード、Ｑ□ｍ　Ｑ２・・・トラ
ンジスタ、ＰＣ・・・フォトカプラ、ＬＤ・・・発光素
子。The figure is a main circuit diagram showing an embodiment of the present invention. KSU...Main unit, ST1~ST□...Slave unit, SL
□, SL2...Signal line, R1-R1...Resistor, D
l, D2...diode, Q□m Q2...transistor, PC...photocoupler, LD...light emitting element.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] １対の信号線に対して子機が複数台並列に接続され、か
つ、主装置から送出された信号電流が前記各子機におけ
るフォトカプラの発光素子へ同時に通ずるボタン電話装
置において、前記信号線に対して信号電流を供給する定
電流回路と、前記信号線の帰線側と電源帰路との間へ挿
入された塞流線輪とを前記主装置に設けたことを特徴と
するボタン電話装置。In a button telephone device in which a plurality of slave units are connected in parallel to a pair of signal lines, and a signal current sent from a main unit is simultaneously passed to a light emitting element of a photocoupler in each slave unit, the signal line is connected to a pair of signal lines. A button telephone device characterized in that the main device is provided with a constant current circuit that supplies a signal current to the main device, and a blocking wire ring inserted between the return line side of the signal line and the power supply return line. .
JP11873381U 1981-08-12 1981-08-12 button telephone device Pending JPS5826257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11873381U JPS5826257U (en) 1981-08-12 1981-08-12 button telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11873381U JPS5826257U (en) 1981-08-12 1981-08-12 button telephone device

Publications (1)

Publication Number Publication Date
JPS5826257U true JPS5826257U (en) 1983-02-19

Family

ID=29912850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11873381U Pending JPS5826257U (en) 1981-08-12 1981-08-12 button telephone device

Country Status (1)

Country Link
JP (1) JPS5826257U (en)

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