Quick NPN transistor question

Discussion in 'General Electronics Chat' started by monkeyhead, Dec 7, 2007.

  1. monkeyhead

    Thread Starter Active Member

    Mar 5, 2007
    45
    0
    Hi,
    If the voltages of the Base and Collector are the same whilst the voltage of Emitter is equal to the supply. Is this a sign that the transistor is shorted between the base and collector?

    Many thanks
    Matt
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Are you sure you're talking about an NPN transistor?

    Normally in an NPN circuit, the emitter is closest to ground!

    If the emitter is measuring the same as the supply voltage, then the load WAS between the emitter and ground, but it is now open, and all three (E, B, C) would measure about the same voltage.
     
  3. monkeyhead

    Thread Starter Active Member

    Mar 5, 2007
    45
    0
    Appologies, I meant PNP*

    Makes a big difference! Sorry about that
     
Loading...