A TRANSISTOR GAIN TEST can be made using an ohmmeter and a simple test circuit. The
principle behind this test lies in the fact that little or no current will flow in a transistor between emitter
and collector until the emitter-base junction is forward biased.
A 10-to-1 resistance ratio in the test between meter readings indicates normal gain.
TRANSISTOR JUNCTION RESISTANCE TEST can also be made using an ohmmeter by
measuring the base-emitter, base-collector, and collector-emitter forward and reverse resistances.