JPS59111339U

JPS59111339U - AM receiver

Info

Publication number: JPS59111339U
Application number: JP425183U
Authority: JP
Inventors: 中尾　芳和
Original assignee: 松下電器産業株式会社
Priority date: 1983-01-18
Filing date: 1983-01-18
Publication date: 1984-07-27

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]

第１図は、従来例の回路構成図、第２図は、本考案あ一
実施例の要部の回路構成図、第３図は、切換タイミング
断続型スイッチの切換時の状態を示す図である。１．２・・・受信帯切換スイッチ、３，４・・・受信帯
切換スイッチに連動またはそれに各まれる切換回路、５
・・・ＡＭ受信機用ＩＣ，６，７，８・・・発振コイル
、９，１０．１１・・・アンテナコイル、１２・・・低
周波増幅回路、１５・・・消音回路用ＩＣ。Fig. 1 is a circuit diagram of a conventional example, Fig. 2 is a circuit diagram of a main part of an embodiment of the present invention, and Fig. 3 is a diagram showing the state of the switching timing intermittent switch. be. 1.2... Reception band selection switch, 3, 4... Switching circuit linked to or included in the reception band selection switch, 5
... IC for AM receiver, 6, 7, 8... Oscillation coil, 9, 10.11... Antenna coil, 12... Low frequency amplification circuit, 15... IC for muffling circuit.

Claims

[Scope of utility model registration request]

In an AM receiver having a plurality of reception bands, a reception band changeover switch with intermittent switching timing is used, and a plurality of switching circuits linked to or included in the changeover switch are connected in series, and this is connected to a silencing element. 1. An AM receiver, which is connected between a control terminal and ground, and whose output end is grounded by instantaneous open circuit of the intermittent switching circuit when switching reception bands, thereby preventing the generation of shock noise.