Hi!
I'm fishing for ideas and experience here.
I want to make some small power transformers for stepping up from about 9-12 V to about 150V. This would be for a tube mic B+ supply like the Gyraf G9, where the mains supply has already been stepped down to provide a suitable voltage for the tube heater. I'm looking for just a few milliamps for the B+.
I have some small toroidal power cores to play with, and I know the basic transformer rules, but what else do I need to factor into my design? Is it as simple as winding 12 turns of thick wire onto one side of the toroid and 150 of thinner onto the other? or double/x10 those figures? Should the windings overlap? Anything else to look out for?
I could just buy what I want, but this is DIY! :grin:
Many thanks
Stewart
I'm fishing for ideas and experience here.
I want to make some small power transformers for stepping up from about 9-12 V to about 150V. This would be for a tube mic B+ supply like the Gyraf G9, where the mains supply has already been stepped down to provide a suitable voltage for the tube heater. I'm looking for just a few milliamps for the B+.
I have some small toroidal power cores to play with, and I know the basic transformer rules, but what else do I need to factor into my design? Is it as simple as winding 12 turns of thick wire onto one side of the toroid and 150 of thinner onto the other? or double/x10 those figures? Should the windings overlap? Anything else to look out for?
I could just buy what I want, but this is DIY! :grin:
Many thanks
Stewart