the PSU is one I also made out of spares, it`s a Cossor transformer, some electolytics out of an old Scope chassis that was given to me some 15 years ago, an GZ34 rectifier I found in my rectifier box, and some power resistors that I bought.
I get my 6.3VAC and about 250v under load, I use a 7W pygmy buld when I`m prototyping as balast to limit the current and show any fault conditions.
here`s some pics:
https://www.vintage-radio.net/forum/...2&d=1257960301
https://www.vintage-radio.net/forum/...1&d=1257960301