[quote author="Greg"]Been studying this schem getting ready for the build, and I don't understand what Q5 is doing. Can someone explain?[/quote]
At first glance it looks like it is adding an AC signal to the gate to reduce distortion.
since peter started his project, i've been working on getting some ap2623 type transformers made. unfortunately, the first supplier i was working with backed out after a few weeks, so now i am a bit behind.
i don't want to discourage anyone from going ahead and buying transformers. but i should have something good available in a few weeks. until then, please do not contact me. as soon as they are available i will post to this thread and post to the black market.