Testing DiodesDiodes should be tested two different ways: A resistance check in both directions. Forward biased should show a very high resistance, reversebiased diodes should show "OL".A barrier voltage check (diode test feature) with a digital multimeter in both directions. Forward biased should show the barrier voltage, reverse biased diodes should show "OL".Barrier voltages for silicon typically range from 0.5 - 0.7 volts.
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