Audio signal amplifier circuit

Details Audio signal amplifier circuit Audio signal amplifier circuit

1992-09-09

1994-04-05

Mullins, James B.

Amplifiers

Combined with automatic amplifier disabling switch means

330149, 330307, H03F 126

Patent

active

053008928

ABSTRACT:
As a switch circuit SW1 is incorporated in an integrated circuit, the number of IC terminals is proportionately reducible. On receiving a mute input signal Min, a mute circuit 13 generates a mute control signal M1 and subsequently a mute control signal M2 later than M1. On receiving the mute control signal M1, the switch circuit SW1 grounds the signal line of an audio output signal A, whereas on receiving the mute control signal M2, a switch circuit SW2 cuts the signal line of an audio input signal I later. A muting function can thus be fulfilled stably.

REFERENCES:
patent: 5059919 (1991-10-01), Kinoshita

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