Reverse the test leads. You can check the health of a standard diode with either a digital or analog multimeter. How To Test High Voltage Zener Diodes With Multimeter How To Test A Diode Led Zener Using Different Diode Test Testing Of Schottky Diode And Application To conduct this test we need to place the diode in a circuit with dc voltage feeding the diode. How do you test a diode . Record the measurement displayed. Record the measurement displayed. You can feed the diode any voltage you want above the threshold voltage. If the voltage reading is zero continue to the next step. If the power is off but there is still voltage you may need to discharge capacitors in the circuit. The circuit below is a good test to check a diode. A good forward based diode displays a voltage drop ranging from 05 to 08 volts for the most commonly u...
