JPS6093395U

JPS6093395U - audio equipment

Info

Publication number: JPS6093395U
Application number: JP18506483U
Authority: JP
Inventors: 宮本　信
Original assignee: 日本ビクター株式会社
Priority date: 1983-11-30
Filing date: 1983-11-30
Publication date: 1985-06-26

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図は従来機器の一例のブロック系統図、第２図は本
考案機器の一実施例のブロック系統図である。３・・・位相反転回路、５・・・スピーカ、８Ｌ・・・
Ｌチャンネル信号入力端子、８Ｒ・・・Ｒチャンネル信
号入力端子、１０・・・ヘッドホンジャック、８１〜Ｓ
３・・・スイッチ、Ｓ２’？　Ｓ３’・・・可動接片。FIG. 1 is a block system diagram of an example of a conventional device, and FIG. 2 is a block system diagram of an embodiment of the device of the present invention. 3... Phase inversion circuit, 5... Speaker, 8L...
L channel signal input terminal, 8R...R channel signal input terminal, 10...Headphone jack, 81~S
3...Switch, S2'? S3'...Movable contact piece.

Claims

[Scope of utility model registration request]

It has a plurality of input terminals to which input signals of a plurality of different channels are respectively supplied, and contact pieces of the same number as the number of channels, and when a headphone plug is connected, the signals coming into the contact pieces are connected to the headphone plug. By connecting the headphone jack to the headphone jack and not connecting the plug to the jack, the plurality of input signals are mixed and supplied to the subsequent stage, while by connecting the plug to the jack, the plurality of input signals are mixed respectively. A first switch circuit is provided at the rear stage of the first switch circuit, and the incoming signal is switched to a positive phase and an opposite phase, and the signal of one phase is sent to the speaker. a phase inverting circuit that supplies one end and one contact piece of the jack, and a signal of the other phase from the phase inverting circuit being supplied to the other end of the speaker by disconnecting the plug from the jack; a second switch circuit configured to switch the input signal of one of the plurality of channel channels to the other contact piece of the jack by connecting the plug to the jack; When not connected to the BTL, the phase inversion circuit, speaker, and second switch circuit
A connection circuit is formed, and when the plug is connected to the jack, the phase inversion circuit, the jack, and the second switch circuit form a headphone circuit.