All-semiconductor regulated HT PSU

[Skywave]

It's better than my scrawny effort Al:

http://golbornevintageradio.co.uk/forum/...p?tid=1887

Lawrence.

Err, no: not scrawny at all. Your design is based on the classical valve cct.; mine is based on semiconductors only. I've built several valve-regulated PSUs over the years, but I simply wanted to see if such a regulated PSU design was possible with transistors (the onward march of technology, etc.), plus sheer curiosity and using my limited design skills. Also I needed something that was smaller than a typical valve equivalent: space here is getting quite limited. For every item that goes out, three more seem to arrive!

Al.