GreetingsI'm having to build a new power supply for a Lomo 19a9 which contains the external output transformer. I need to find some sort of equivalent for this, does anyone know what the ratio and source impedance needs to be? Thanks

Lomo info is scarce.If I have a hour some day, I can measure ours.

anyone?

The Lomo 19A9 output transformer is 3:1 ratio. 420 turns primary, 140 turns secondary. Same AWG for both bobbins.

John Peluso has good LOMO transformers that make great replacements. Not the same model number, but very similar.

I have a 4:1 and a 5:1 cinemag condenser output to spare...