![]() Then the reading should display a high resistance value ( OL condition ) hence the diode induces a very high resistance when it is reverse biased.Then connect positive phobe to the cathode and negative phobe to the anode.Then the reading should give a low resistance value hence it is forward biased.Connect the positive phobe to the positive terminal of the diode (anode) and the negative phobe to the negative terminal of the diode ( cathode ).How to Find Anode and Cathode in Diode using Analog Multimeter Diodes induce very high resistance when they are reverse biased. A negative voltage means the diode is operating in its reverse. If the display gets a very high resistance value or ” OL ” that means the diode is reverse biased where red phobe is on the cathode and the black phobe is on the anode. A positive voltage (anode higher than cathode) on the diode puts it in its forward biased region. ![]() ![]()
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