JPS6077155U - Telephone incoming call detection circuit - Google Patents

Telephone incoming call detection circuit

Info

Publication number
JPS6077155U
JPS6077155U JP16828283U JP16828283U JPS6077155U JP S6077155 U JPS6077155 U JP S6077155U JP 16828283 U JP16828283 U JP 16828283U JP 16828283 U JP16828283 U JP 16828283U JP S6077155 U JPS6077155 U JP S6077155U
Authority
JP
Japan
Prior art keywords
detection circuit
incoming call
switching element
call detection
capacitor
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
JP16828283U
Other languages
Japanese (ja)
Other versions
JPS6345094Y2 (en
Inventor
木下　利治
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 JP16828283U priority Critical patent/JPS6077155U/en
Publication of JPS6077155U publication Critical patent/JPS6077155U/en
Application granted granted Critical
Publication of JPS6345094Y2 publication Critical patent/JPS6345094Y2/ja
Granted legal-status Critical Current

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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回路図である。 ２．７・・・・・・ダイオードブリッジ、３・・・・・
・スイッチング回路、４・・・・・・電源回路、５・・
・・・・通話回路、９・・・・・・制御回路、１０・・
・・・・電圧検出回路、１１・・・・Ｌ・インバータ、
１２・・・・・・リレー制御回路、Ｌｌｆｈ・・・・・
・線路端子、ＧＳ・・・・・・リレー、ｇｓｌ〜ｇｓ３
・・・・・・接点、π１．ｚＤ２・・・・・・定電圧ダ
イオード、Ｄｌ、　Ｄ１□〜Ｄ１５°°°°°°ダイオ
ード、Ｃ１９Ｃ２９Ｃ１１ゝＣ１３°ｅｒａｓｅコンデ
ンサ、Ｒｏ、Ｒ□〜Ｒ８・・・・・・抵抗器、ＰＣ・・
・・・・フォトカプラ、Ｑｌ？　Ｑ２・・・・・・トラ
ンジスタ、Ｈ８・・・・・・フックスイッチ、ＬＢ・・
・・・・ループ切断信号。The figure is a circuit diagram showing an embodiment of the present invention. 2.7...Diode bridge, 3...
・Switching circuit, 4... Power supply circuit, 5...
...Telephone circuit, 9...Control circuit, 10...
...Voltage detection circuit, 11...L inverter,
12...Relay control circuit, Llfh...
・Line terminal, GS...Relay, gsl~gs3
...Contact point, π1. zD2... Constant voltage diode, Dl, D1□~D15°°°°°° diode, C19C29C11ゝC13° erase capacitor, Ro, R□~R8... Resistor, PC...
...Photocoupler, Ql? Q2...Transistor, H8...Hook switch, LB...
...Loop cut signal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 線路を介する交換機の電源を利用して制御用の局部電源
を得る電源回路を備え、かつ、オンフックに応するルー
プ切断信号によって一定時間直流ループを開放してから
待機状態となる電話機において、着信状態の記憶を行な
うコンデンサと、呼出信号の到来に応じて前記コンデン
サを充電する第１のスイッチング素子と、オフフックに
応じて前記コンデンサの端子電圧を制御回路へ与える第
２のスイッチング素子と、前記ループ切断信号に応じて
前記コンデンサの放電路を形成する第３のスイッチング
素子とを備えたことを特徴とする電話機の着信検出回路
。In a telephone that is equipped with a power supply circuit that obtains local power for control using the power supply of an exchange via the line, and that opens the DC loop for a certain period of time by a loop disconnection signal corresponding to on-hook, and then goes into a standby state, a first switching element that charges the capacitor in response to the arrival of a call signal; a second switching element that supplies the terminal voltage of the capacitor to the control circuit in response to off-hook; An incoming call detection circuit for a telephone set, comprising: a third switching element that forms a discharge path for the capacitor according to a signal.
JP16828283U 1983-10-29 1983-10-29 Telephone incoming call detection circuit Granted JPS6077155U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16828283U JPS6077155U (en) 1983-10-29 1983-10-29 Telephone incoming call detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16828283U JPS6077155U (en) 1983-10-29 1983-10-29 Telephone incoming call detection circuit

Publications (2)

Publication Number Publication Date
JPS6077155U true JPS6077155U (en) 1985-05-29
JPS6345094Y2 JPS6345094Y2 (en) 1988-11-22

Family

ID=30367938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16828283U Granted JPS6077155U (en) 1983-10-29 1983-10-29 Telephone incoming call detection circuit

Country Status (1)

Country Link
JP (1) JPS6077155U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105556A (en) * 1985-11-01 1987-05-16 Nec Corp Electronic telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105556A (en) * 1985-11-01 1987-05-16 Nec Corp Electronic telephone set

Also Published As

Publication number Publication date
JPS6345094Y2 (en) 1988-11-22

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