Class b amplifier

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fmm

Joined May 11, 2009
1
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?

thanks

 

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