Class b amplifier

Discussion in 'Homework Help' started by fmm, May 18, 2009.

  1. fmm

    Thread Starter New Member

    May 11, 2009
    hi..i'm having some problem with this question (see attachment for figure)...and am not sure whether what i've done is correct​

    for maximum power to load i calculated
    0.5*((12.73)^2)/12) = 6.75 w ....(is this correct?)

    for efficiency of this output stage i calculated
    ∏/4 * (12.73/20) * 100 = 50 % .....(is this correct?)

    how do i get the maximum peak value of input Vi?

    i'm not sure how to get the breakdown voltage of each transistor?

    if the output stage delivers 36% more power to the load..hw do i calculate the percentage the power supply voltage must be increased by?


  2. PRS

    Well-Known Member

    Aug 24, 2008
    Is that 12 ohms at the output? What is the voltage?