T Taspats New Member Oct 2, 2011 #1 Hi. I'm making a stereo amplifier I stoped at diode bridge. I got some diodes from old russian TV, but I can't find out their polarity. [my multimeter have broke down ] **broken link removed** Thanks.
Hi. I'm making a stereo amplifier I stoped at diode bridge. I got some diodes from old russian TV, but I can't find out their polarity. [my multimeter have broke down ] **broken link removed** Thanks.
M MrAl Well-Known Member Most Helpful Member Oct 2, 2011 #2 Hi, You have an LED around? Use the diode and LED in the circuit. The LED only lights when the diode is connect with it's polarity one way. I dont know the current rating, but a small flashlight bulb might work too. A battery, a coil of wire and a compass. Last edited: Oct 2, 2011
Hi, You have an LED around? Use the diode and LED in the circuit. The LED only lights when the diode is connect with it's polarity one way. I dont know the current rating, but a small flashlight bulb might work too. A battery, a coil of wire and a compass.