Q-Point Voltage

Discussion in 'Homework Help' started by Stereoblind, Apr 29, 2015.

  1. Stereoblind

    Thread Starter New Member

    Mar 10, 2015
    14
    0
    I'm currently working on tutorial problems for setting the q-point for bjt circuits. When talking about Vq I'm getting a bit confused though. If Iq is the quiescent current I can see where you would measure that. But across where would I be able to measure Vq? Is it across the output of the transistor? Or is it just an imaginary point that I can't actually investigate with a voltmeter on the circuit?
     
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
    2,503
    380
    The q-point is a point on the transistor collector/load line, measured at the collector.

    Watch this
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    The voltage on the x-axis is the voltage across the collector-emitter, VCE, i.e. the voltage at the collector with respect to the emitter .
     
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