Transformer fields

Andrew · Post by **Andrew** » Sun Dec 30, 2007 8:26 pm

Question for the panel, in an EI tx whats the worst direction of radiated magnetic hum field. along the grain of the lams or at right angles to it?

many thanks,

-- Andrew

Paul Barker · Post by **Paul Barker** » Sun Dec 30, 2007 8:53 pm

I've not held iron filings near it but the magnetic path is along the grain.

Andrew · Post by **Andrew** » Sun Dec 30, 2007 9:22 pm

Hmm, wonder if (eventually) I should get a toroid instead? I've heard there's less hum field on those.

cheers,

-- Andrew

Post by **Nick** » Sun Dec 30, 2007 9:30 pm

I've heard there's less hum field on those.

Maybe, but everytime I use one, I have to rotate it to get the minimum induced switching noise.

audio-talk

Transformer fields

#1 Transformer fields

#2

#3

#4