JPS6074325U - telephone - Google Patents

telephone

Info

Publication number
JPS6074325U
JPS6074325U JP16500983U JP16500983U JPS6074325U JP S6074325 U JPS6074325 U JP S6074325U JP 16500983 U JP16500983 U JP 16500983U JP 16500983 U JP16500983 U JP 16500983U JP S6074325 U JPS6074325 U JP S6074325U
Authority
JP
Japan
Prior art keywords
telephone
circuit
transistor
turned
bell
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
JP16500983U
Other languages
Japanese (ja)
Inventor
浅場　康次
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Ten Ltd
Original Assignee
Denso Ten Ltd
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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP16500983U priority Critical patent/JPS6074325U/en
Publication of JPS6074325U publication Critical patent/JPS6074325U/en
Pending legal-status Critical Current

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  • Control Of Amplification And Gain Control (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]

図面は本考案の実施例を示し、第１図は概要を示すブロ
ック図、第２図は要部の詳細を示す回路図である。 図面で１０は電話の送受話器、２０はオーディオ装置の
パワーアンプ、２４は自動音量調整回路、Ｑ３．Ｒ５，
Ｒ７は第１の減衰回路、Ｑ４゜Ｒ６，Ｒ７は第２の減衰
回路である。The drawings show an embodiment of the present invention, with FIG. 1 being a block diagram showing an overview, and FIG. 2 being a circuit diagram showing details of the main parts. In the drawing, 10 is a telephone handset, 20 is a power amplifier of an audio device, 24 is an automatic volume adjustment circuit, and Q3. R5,
R7 is a first attenuation circuit, and Q4°R6 and R7 are second attenuation circuits.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ラジオなどのオーディオ装置と一体化された電話器にお
いて、該オーディオ装置のパワーアンプの前に自動音量
調整回路を設け、該回路に、電話のベル駆動信号を感知
してオンになるトランジスタを有する第１の減輩回路と
、送受電器が持ち上げられている間オンになるトランジ
スタを有する第２の減衰回路を設けて、ベルが駆動され
てから通話が終了する迄オーディオ部の音量を自動的に
低減するようしてなることを特徴とする電話器。In a telephone integrated with an audio device such as a radio, an automatic volume adjustment circuit is provided in front of the power amplifier of the audio device, and the circuit includes a transistor that is turned on by sensing a bell drive signal of the telephone. 1 attenuation circuit and a second attenuation circuit having a transistor that is turned on while the transmitter and receiver are lifted to automatically reduce the volume of the audio section from the time the bell is activated until the end of the call. A telephone device characterized in that it becomes
JP16500983U 1983-10-25 1983-10-25 telephone Pending JPS6074325U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16500983U JPS6074325U (en) 1983-10-25 1983-10-25 telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16500983U JPS6074325U (en) 1983-10-25 1983-10-25 telephone

Publications (1)

Publication Number Publication Date
JPS6074325U true JPS6074325U (en) 1985-05-24

Family

ID=30361611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16500983U Pending JPS6074325U (en) 1983-10-25 1983-10-25 telephone

Country Status (1)

Country Link
JP (1) JPS6074325U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6312954U (en) * 1986-07-10 1988-01-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322605B2 (en) * 1974-02-28 1978-07-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322605B2 (en) * 1974-02-28 1978-07-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6312954U (en) * 1986-07-10 1988-01-28

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