I'm a vintage radio collector and I have on my benchtop a Variac that I use for testing out radios. I wonder if there's a way I can put together something that I can either put inside the radio chassis or in the cabinet area of the radio that would allow me to take the 120 V AC mains and drop it down to either 110 V AC or 117 V AC.
I know there are buck/boost transformers out there but nothing that seems to quite fit what am looking for.
They either allow for other types of voltage reduction that would not be applicable for these radios.
I estimate that the amperage would be probably at least one amp and maybe 1.5 when I turn up the volume on some of the sets. Usually the AA5 would draw probably less than one amp while the other larger vacuum tubes complement radios would probably draw more than 1 amp. I also have discovered that some vintage radio restorers use wire wound resistors that give off wattage and heat and I don't know how to calculate what I would need those resistors to be.
I appreciate any recommendations that may be sent my way.