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
    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


    Oct 2, 2009
    What is your definition of Q-point?

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