[導(dǎo)讀]220V交流遙控測試儀電路材料BOM表：R1 = 100R-1/2W R2 = 47K R3 = 47K R4 = 100R-1/2W C1 = 0.47uF-275V C2 = 470uF-35V C3 = 10uF-25V D1 = 1N4007 D2 = 1N4007 D3 = TL431 B1 = Piezo Buzzer IR1 = TSO