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1...The base emitter junction should behave as a diode, conducting when a positive voltage is applied to the base (NPN types).

2...The base collector junction should behave as a diode, conducting when a positive voltage is applied to the base. (NPN Types).

Note: Many multimeters cannot put out enough voltage to overcome the forward offset voltages, 700mV for silicon devices.

Note: Some transistors are too fragile for this kind of testing.

Note: Determine the polarity of the multimeter output on ohms ranges.

Note: Be very careful when using a multimeter that employs a 9 volt battery for it's ohms ranges...that is enough to blow junctions.

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