noobgod Posted November 27, 2006 Report Share Posted November 27, 2006 hi... i need to design a 0.5w audio amplifier with mute and volume control. the design must allow user to select music or speech signal.with a power supply of +12v from the secondary of 100KHz switching mode power supply.. high frequency components may be present so i need to filter it away...base band signal is 300mVp-p at 1KHz...i need a transistor switch circuit for selecting voice, music and mute mode...thank for ur help Quote Link to comment Share on other sites More sharing options...
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