A good forward based diode displays a voltage drop ranging from 05 to 08 volts for the most commonly used silicon diodes. Observe the reading on the meter display. How To Use A Multimeter To Measure Voltage Current And Basic Electronics 1a In Circuit Testing Of Diodes And Rectifiers Shut off power to the circuit. How to check diode on multimeter . Some germanium diodes have a voltage drop ranging from 02 to 03 v. Check for a diode check mode. The multimeter displays ol when a good diode is reverse biased. Keep the digital multimeter dmm in diode checking mode by rotating the central knob to the place where the diode symbol is indicated. This is a simple test we can do to check whether it is good open or shorted. Connect the red probe to the anode and black probe to the cathode. Select the diode check function. Identify the posit...
