JPS6037943U

JPS6037943U - receiving device

Info

Publication number: JPS6037943U
Application number: JP12886783U
Authority: JP
Inventors: 辰則加藤
Original assignee: 三洋電機株式会社
Priority date: 1983-08-19
Filing date: 1983-08-19
Publication date: 1985-03-15

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 drawings]

第１図は従来の受信装置のブロック結線図、第２図はこ
の考案の受信装置の１実施例のブロック結線図である。５・・・・・・ＦＭ−ＡＭ共用回路部を形成する集積回
路、２３，２８，３０・・・・・・切換えスイッチ、２
５・・・・・・ＡＩ’４波フィルタ用のコンデンサ、２
６・・・・・・トランジスタ、３４・・・・・・増幅器
、３６，３ｇ・・・・・・入力用の抵抗、３８・・・・
・・発光ダイオード、４０・・・・・・ダイオード、４
１・・・・・・ミューティング用インピーダンス体を形
成する抵抗、Ｌａ・・・・・・ＦＭ−ＡＭ共通路、Ｌｂ
・・・・・・ＦＭワイヤレス専用路。FIG. 1 is a block diagram of a conventional receiving device, and FIG. 2 is a block diagram of an embodiment of the receiving device of this invention. 5...Integrated circuit forming the FM-AM shared circuit section, 23, 28, 30... Changeover switch, 2
5...Capacitor for AI'4 wave filter, 2
6...Transistor, 34...Amplifier, 36,3g...Input resistor, 38...
...Light emitting diode, 40...Diode, 4
1... Resistor forming a muting impedance body, La... FM-AM common path, Lb
...FM wireless dedicated path.

Claims

[Scope of utility model registration request]

When receiving FM and when receiving an FM wireless microphone, the FM intermediate frequency amplification circuit and the FM detection circuit operate to output an FM detection signal from the common output terminal, and when receiving AM, the AM reception detection circuit operates and outputs an FM detection signal from the common output terminal. A
FM-AM which outputs an M detection signal and whose tuning display terminal is held at ground level only during the tuning period at each reception.
a shared circuit section, and A whose one end is connected to the common output terminal.
a capacitor for the M detection filter; a switch body that conducts when a bias voltage is applied to a control terminal and grounds the other end of the capacitor; and the FM detection signal outputted from the common output terminal when receiving the FM; Said A.M.
The AM detection signal outputted from the common output terminal at the time of reception is outputted to a subsequent circuit section via an FM-AM common path, and the FM detection signal outputted from the common output terminal at the time of reception of the FM wireless microphone is outputted. In the receiving device, the receiving device includes an output switching section that outputs the output to the subsequent circuit section via a dedicated FM wireless microphone path, and the control terminal is connected to the tuning display terminal, and a channel is provided between the dedicated path and the switch body. The provided muting impedance body and the control terminal are connected to the bias power supply path only during the FM wireless microphone reception and the AM reception, and the tuning display terminal is connected to the bias power supply path only during the FM wireless microphone reception and the AM reception. A receiving device comprising: a bias voltage application control section that applies the bias voltage to the control terminal only during a non-tuning period when the terminal is released from a ground level.