Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: I cant understand this transistor

  1. Jun 10, 2010 #1
    [PLAIN]http://img687.imageshack.us/img687/2164/transistor.jpg [Broken]

    is this a pnp transistor? if yes, why does the current go from top to bottom?

    also, does this transistor work? I mean shouldnt there be 0 current going throuth the two resistors?

    i cant understand it at all
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Jun 10, 2010 #2
    Yes, this is a PNP transistor. The current is just flowing via two resistors to the ground. The gate-emitter junction is reverse biased by voltage across R2, so the transistor will be in cut-off region.
  4. Jun 10, 2010 #3
    but why does current go through the two resistors? shouldnt it just go down from the other way where there are no resistors?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook