1. The problem statement, all variables and given/known data 1. Calculate Vcc and Vee(should be around 14-16). 2. Calculate the input resistance. (You should get a high value). 3. Determine the voltage gain. No calculation is needed. http://img210.imageshack.us/my.php?image=effectampqe2.jpg Ucesat = 1 V Poutmax = 10 W Rl = 8 ohm Icq9=Icq11=40mA Re=0.47 ohm R8=R9=1000 ohm Vbe=0.7V 2. The attempt at a solution 1. I used P=U^2/(2*R)=>U=sqrt(P*2*R)=sqrt(10*2*8)=12.65V Vcc=U+Ucesat=12.65+1=13.65 but this is less than 14. 2.Here i don't know how to start. 3.I don't know how to solve this either.