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Old 26th May 2023, 9:11 am   #11
Courtney Louise
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Join Date: Sep 2005
Location: Welshpool, Powys, Wales
Posts: 1,327
Default Re: Mains cable with resistance wire thread

@techman

This one never had a transformer fitted from factory. The factory solution was a resistance wire in the line cord. That’s on the diagram and also what I have. The motor chassis is pretty well isolated from any power shorts risk but the amp section I’m not so sure. But this is how it was originally designed and was on a 2 pin plug so no obvious polarity when new.

It sure is a strange beast for sure.

@all I will redo calculations on 150mA but what do I allow for the HT side or do I just base it on the heaters?
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