When I was into battery sets from the 20s I made a mains PSU using a 110 volt toroid and wound the primaries onto it for the heaters. Because it was for 1.5V, 2.0V and 4.0V heaters there were taps and rectifiers/regulator circuitry.
One thing that I thought VERY important was protection on these ccts. I provided Over voltage protection with diodes and/or SCR to ensure that the heaters would not be blown by a possible fault in the PSU. Valves from the 20s are hard to find and expensive.
Mike
One thing that I thought VERY important was protection on these ccts. I provided Over voltage protection with diodes and/or SCR to ensure that the heaters would not be blown by a possible fault in the PSU. Valves from the 20s are hard to find and expensive.
Mike
