How to find Q-point of transisters?

Discussion in 'The Projects Forum' started by Malik43, Jun 9, 2014.

  1. Malik43

    Thread Starter New Member

    Jun 9, 2014
    1
    0
    Hi..I am making DC voltage doubler for which I used two power BJTs for switching and provided two inverted square waves to the bases of these transisters. Now I want to find the Q points of these transisters. When I use DMM to find the base or collector current, it gives 0. Kindly help me in this. I'll highly appreciate it.
    Remember that I cannot measure the any current or voltage through Proteus or Multisim because I am using CD4047 ic to generate two inverted versions of square wave which is not available in either of these simulation softwares. So I have to find Q-point practically.
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,421
    3,357
    What is your definition of Q-point?

    You will have to show your circuit schematic if you are going to receive any further help.
     
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