下面是[9V便携式耳机放大器电路]的电路图

材料清单

P1 = 22K R1 = 18K R2 = 68K R3 = 68K R4 = 68K R5 = 18K R6 = 68K C1 = 4.7uF-25v C2 = 4.7uF-25v C3 = 22pF C4 = 220uF-25v C5 = 220uF-25v C6 = 4.7uF-25v C7 = 22pF C8 = 220uF-25v J1 = 3.5mm Stereo Jack B1 = 9V Alkaline Battery IC1 = NE5532-34 SW1 = SPST Toggle Switch(：电路图)