Electronic Circuit Diagram and Layout

Amplifier Auto Power ON Signal detecting auto power-on unit, audio signal controlled relay switch module, amplifier auto power on, audio sensing power switch, audio detector switch, audio signal detector circuit, line level audio detection circuit, audio triggered power switch part : BC547 , BC557, LM358, Relay

stk audio ic 60W 60W AF Amplifier With STK-0060II circuit diagram

100W Audio Amplifier Circuit using STK0100, 2SA984, D5442, 2SC2912, 2SC2274, 2SA608

tube Amplifier circuit using 12AT7, EL84

Piezoelectric Triggered Switch circuit using BSS84ZX, ZVN2106