How test a zener diode with Digital mujltimeter
The zener diode characteristics shows under the reverse bias condition, the voltage across the diode remains almost constant although the current through the diode increases in the region p-n. So the voltage across the
Zener Diode: 6.2v To 200V Regulator PDF Details:
zener diode serves as a reference voltage.
Hence the diode can be used as a voltage regulator.
ZENER DIODE-With Digital multimeter
How test Zener Diode with Digital Multimeter?
Step-1.
Connect DMM (+) Test Red lead to anode
DMM (-) Test Black lead to cathode
Verification:
DMM Reading shows = 0.548v to 0.668v = GOOD condition.
Step-2.
Reverse bias:
Connect DMM (+) Test lead to cathode
DMM (-) Test lead to anode
DMM Reading shows = OL or OPEN or ‘1’ (over load) = GOOD condition.
Verification:
If you get reading in forward bias as 0000 or OL or 1, in reverse bias as 0000 (or) low values the device can be FAULTY and needs replacement.
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You should mention the mode selection to multimeter. And can voltage range display in diode mode?