• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

how can i build a Choke?

Hello there, is it possible to wind my own choke for a power supply? im looking for 6-8H of inductance and a few hundred ohms, it needs to be able to withstand a curent of about 250mA. what sort of guage wire will i need? and how many turns will i need?, i can get hold of parts such as a core, bobbin etc. but is there a calculator or anything i need to follow for it to work and get the specifications i need?

Thanks in advance