JPS5945714U

JPS5945714U - tape recorder

Info

Publication number: JPS5945714U
Application number: JP14317682U
Authority: JP
Inventors: 破魔　洋泰
Original assignee: 三洋電機株式会社
Priority date: 1982-09-20
Filing date: 1982-09-20
Publication date: 1984-03-27
Also published as: JPH0320889Y2

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図は従来のラジオ付カセットテープレコーダの一部
の結線図、第２図はこの考案のテープレコーダの１実施
例の要部の結線図である。３・・・整流回路、５・・・電池、６・・・機構スイッ
チ、　　　“７・・・電源用リップルフィルタ、８ｅ・
・・第５録再切り換えスイッチ、９・・・時定数回路、
１０・・・録再ヘッド、１１・・・増幅器、１３・・・
音量調整回路、１４・・・電力増幅回路、１５・・・ス
ピーカ、１６・・・記録表示器、１９・・・外部信号入
力端子、２０・・・マイク入力端子、Ｑｂ、　Ｑｃ・・
・ミューティング用第２、第３トランジスタ。FIG. 1 is a wiring diagram of a part of a conventional cassette tape recorder with a radio, and FIG. 2 is a wiring diagram of a main part of an embodiment of the tape recorder of this invention. 3... Rectifier circuit, 5... Battery, 6... Mechanical switch, "7... Ripple filter for power supply, 8e.
・・5th recording/reproduction switch, 9・time constant circuit,
10... Recording/reproducing head, 11... Amplifier, 13...
Volume adjustment circuit, 14... Power amplifier circuit, 15... Speaker, 16... Recording display, 19... External signal input terminal, 20... Microphone input terminal, Qb, Qc...
・Second and third transistors for muting.

Claims

[Scope of utility model registration request]

A power supply such as a rectifier circuit or a battery, a power supply ripple filter for removing ripple components of the power supply, a mechanical switch provided between the power supply and the filter and opened only in a stop mode, and an external signal for recording. an external signal input terminal and an external microphone input terminal into which a It has a re-amplifier, a recording contact, and a reproducing contact, and a power supply voltage is applied through the mechanical switch, and when the mode is switched from the stop mode to the recording mode, the switching is made to the recording contact via the reproducing contact. recording/playback switch,
a recording display connected to the recording contact; a muting transistor having a base connected to the one playback point and muting the amplified signal output from the amplifier to the audio output circuit; and a base circuit of the transistor. a time constant circuit having a smaller time constant than the provided filter, and muting the amplified signal output from the amplifier to the audio output circuit by the transistor at the moment the stop mode is switched to the recording mode. A step recorder designed to do this.