[R-390] Selenium rectifier

[wli]

I agree with Barry re that OEM selenium rectifier. I replaced my expensive 26Z5's with 12BW4's, and replacing the old discolored tube sockets with new ceramic ones and some minor rewiring. Has worked out swell for over a decade now.

Our house power varies more than I like, so I have a home-brew AC volt-ammeter mated to a Variac for a monitored soft-start. At least I know what's happening when I power up. 

W. Li