How to test a transistor using a digital Multimeter

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Easy way to test a transistor using a digital Multimeter. In summary, to determine what type of transistor is by swapping positive and negative probes until you get 2 forward bias voltage reading for example 1 positive probe on one pin and another two pin is on negative probe then it is an NPN transistor.

To determine the which pin is collector, emitter and base:

Emitter = forward bias voltage is higher than collector pin
Collector = lower forward bias voltage compared to emitter pin
Base = reference probe for both two junctions in forward bias

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