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Power Transistor HVAC: Testing and Inspection
INSPECTION
INSPECT POWER TRANSISTOR OPERATION a.
Connect the positive (+) lead from the battery to terminal 1 through a
3.4 W test bulb and terminal
3 of a
120 Ohms resistor.
b.
Connect the negative (-) lead from the battery to terminal 2 and check that the test bulb lights up.
If