ok, currently on my bench,
it appears that i can not get it going with a 5Vpk-pk Sig from the Gen. But Va must be 3V or so, it Can not be the same as the driver source. my sig gen should have enough current to work but maybe it dose not.
Update, tested this by shorting G to 0v and its fine. so 5V and 5Vpk-pk dose work. just not with my Gen. hummm...
guess that's due to the need for a change big enough to flow the current on the first stage...
the 100uf cap dose smooth out the Signal a tinny bit on the first stage.
the 22K and .33nf do feed all the way back in to that base of Q7, there is a small peak that happens with it in place, prob not enugh to worry about, but i think its not for that, its for the PLL, if its connected there is a nice slow curve, showing that there is an RC time constant there. maybe checking for when the primary is fully on?
there is a delay when the Sig turns off and the Tip120 turns off, they all turn on at the same time. but they do not turn off at the same time.
ok updated Driver circuit V 1.2 with Values and Numbers for Input points and component's
please try to stick to this component numbering system as we need to stay on the same page when talking about this thing...
PS, Uploading Video on this testing. post it when its up. also note that in the video my sig gen dose not turn off the circuit when at 0V so i had to drop the voltage of the Va and Vb to 3V.