Measuring diode drop in both directions with meter??

dl324

Joined Mar 30, 2015
12,871
Not for a regular diode.

If you had a low voltage zener, it might work. It depends on the voltage used by the meter. I think mine only works to 2 volts.
 

AlbertHall

Joined Jun 4, 2014
11,309
With the diode in circuit, yes, you might read conduction in both directions - one direction being the forward conduction of the diode and in the other direction conduction through some other component in the circuit. For instance in the circuit below, checking the diode, the base-emitter of the transistor will conduct in the reverse direction.
1612140714414.png
 
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