多功能導(dǎo)電能力測試儀電路由探測電極、電阻分壓器、緩沖電路和雙色二極管組成,如圖所示。探測電極可感知被測物的電阻,根據(jù)被測物電阻的大小控制雙色發(fā)光二極管發(fā)光。當(dāng)探測電極感知被測物的電阻大于300kΩ且小
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