헤드폰 사용시 우퍼스피커 차단회로

申请公布号：KR19980034812(U)

申请号：KR19960047767U

申请日期：1996.12.09

申请公布日期：1998.09.15

摘要：<p>본 고안은 헤드폰 삽입시 좌,우채널 음성신호 출력을 차단시킴과 함께 우퍼스피커의 출력을 자동차단시키도록 한 것으로, 헤드폰잭에서 좌,우채널 스피커로 인가되는 음성신호를 적분시키는 적분부와, 상기 적분부의 적분출력에 의해 구동되는 스위칭부로 이루어진 뮤트회로를 구비하고 상기 뮤트회로의 출력을 우퍼앰프의 뮤트단자에 인가시킴으로써 이루어지며 헤드폰 삽입시 우퍼앰프에 자동적으로 뮤트를 걸어주어 우퍼스피커출력을 차단시키게 된다.</p>

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