Quote:
Originally Posted by Electronic M
If you don't mind not having the 5U4 you could get a transformer without the 5V winding and use a pair of 1N4007s in place of the 5U4.
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Yet another option, and an excellent one if the supply of 5U4 transformers available to the poster proves scarce. There may be more 1960s transformers laying around than '50s.
I suggested a 5U4 equipped donor by considering the skill level of the poster. A 5U4 transformer would take care of all filaments with just the B+ to tweak and likely a couple of holes to be relocated for mounting.
But something like this RCA, that isn't a historic piece, should be put back into operation even if requires some minor modification.
Looking forward to seeing it run.
John