Page 126 - Testing Electronic Components

1. Connect the red probe of the multimeter to one of the transistor leads
and connect the black probe to any of the other leads.

2. If two low readings are found for one connection of the red probe
(Test no 1&2), while each of the other two position gives two high
readings (Test no 3, 4, 5 & 6), then the transistor is PNP type.

3. The pin where the red probe is connected to showed two low reading
when the black probes connected to other two leads shows high
reading is the “Base”. In the above case pin 1 is the “Base”.

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