Re: Toroidal choke failure
To the list of important parameters, I'd add self-resonances. Having one hit the switching frequency can be dramatic.
Dropping a gauge and going to 'Heavy Formvar' enamel may be the best move. It's possible that the original was made with light solder-through vanishing varnish coated wire.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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