JPS58127412U

JPS58127412U - Stereo tape recorder input circuit

Info

Publication number: JPS58127412U
Application number: JP2327182U
Authority: JP
Inventors: 内藤　善文
Original assignee: 三洋電機株式会社
Priority date: 1982-02-19
Filing date: 1982-02-19
Publication date: 1983-08-29

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]

図は本考案回路の実施例である。Ｍｌ、　Ｍ２・・・第１及び第２コンデンサマイク、Ｊ
□。Ｊ２・・・第１及び第２外部マイクジャック、Ａ１．　
Ａ２・・・第１及び第２増幅器、Ｑ、、　Ｑ２・・・第
１及び第２トランジスタ、Ｓ□、Ｓ２・・・第１及び第
２スイツチ。The figure shows an embodiment of the circuit of the present invention. Ml, M2...first and second condenser microphone, J
□. J2...first and second external microphone jacks, A1.
A2...first and second amplifiers, Q2...first and second transistors, S□, S2...first and second switches.

Claims

[Scope of utility model registration request]

The first device enters the operating state by being supplied with an operating voltage.
and a stereo tape recorder having a second condenser microphone, and first and second external microphone jacks for inputting input signals from the first and second condenser microphones to first and second amplifiers through jack terminals, respectively, First and second transistors for input gain adjustment whose collectors and emitters are respectively connected between the input lines of the first and second amplifiers and ground, and line-in inputs to the first and second external microphone jacks, respectively. first and second switches that are switched from a first switching position to a second switching position when the switch is supplied with the first and second condenser microphones; 1. An input circuit for a stereo tape recorder, characterized in that the input circuit is configured to supply an operating voltage to a base thereof, and to supply an operating voltage to a base so as to make the first and second transistors conductive in a second switching position.