JPS5911508U

JPS5911508U - Muting device

Info

Publication number: JPS5911508U
Application number: JP10731682U
Authority: JP
Inventors: 孝克盛合; 細田　文麿
Original assignee: 株式会社東芝
Priority date: 1982-07-15
Filing date: 1982-07-15
Publication date: 1984-01-24

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

[Brief explanation of the drawing]

２第１図は従来のミューティング装置を示す図、第２図
は第１図の装置のミューティングパルス発生用のスイッ
チの構成を示す図、第３図はこの考案に係るミューティ
ング装置の一実施例を示す図、第４図は第３図の装置の
ミューティングパルス発生用のスイッチの構成を示す図
、第５図は他の実施例を示す回路図である。ｓ、乃至ｓ３．　ｓ□。、Ｓ２４．Ｓ２２・・・スイッ
チ、Ｒ１乃至　　　　□Ｒ３，Ｒｌｏ、　Ｒ□１．　Ｒ
２□、　Ｒ２２−＠抵゛抗、１１，１２゜２４−・・増
幅器、１３−・・基板、１３ａ、　１３ｂ。１３Ｃ・・・接点パターン、１３ｄ・・・選択側パター
ン、１４．２０・・・摺動子、Ｑ、、　Ｑ２．　Ｑ□。＊　Ｑ２ｂ　Ｑ２２・・・トランジスタ、２１・・・Ｆ
Ｍフロントエンド、２２・・・ＡＭフロントエンド、２
３・・・ＦＭ／ＡＭ検波部、Ｄｌ、Ｄ２・・・ダイオー
ド。2. Fig. 1 is a diagram showing a conventional muting device, Fig. 2 is a diagram showing the configuration of a switch for generating muting pulses in the device of Fig. 1, and Fig. 3 is a diagram showing a muting device according to this invention. FIG. 4 is a diagram showing the configuration of a switch for generating a muting pulse in the device shown in FIG. 3, and FIG. 5 is a circuit diagram showing another embodiment. s, to s3. s□. , S24. S22...Switch, R1 to □R3, Rlo, R□1. R
2□, R22-@resistor, 11, 12゜24-... amplifier, 13-... board, 13a, 13b. 13C...Contact pattern, 13d...Selection side pattern, 14.20...Slider, Q, Q2. Q□. *Q2b Q22...Transistor, 21...F
M front end, 22...AM front end, 2
3...FM/AM detection section, Dl, D2...diode.

Claims

[Scope of utility model registration request]

A muting circuit connected to the movable switching side of a mode changeover switch having a plurality of fixed contacts, a non-shorting type switch that is interlocked with the mode changeover switch and has a plurality of fixed contacts corresponding to the mode changeover switch. a muting pulse generating section that detects a non-conducting state between each of the fixed contacts of the switch and the movable segments and puts the muting circuit into an operating state. Device.