Junior Member level 2
The above circuit is supposed to be a push-pull amplifier and I'm supposed to find the dc currents of the transistors for Vout=0. But i just can't do it. According to my calculation Q7 and Q6 will have the same collector current and therefore Q5 will also have the same collector current( of course this is an approximation I left out the base currents). So if Q5 is in forward active mode then Q2 is in cut-off and since Vout=0 Q1 will also be in cut off. Now there is the contradiction Q1 can not be in cutoff because Q5 is in forward active mode.
Am I missing something here ?