Transformer calculation

[Gary Fortnum]

Francisco Viegener  wrote:

>Hi,I want to rewind a filament tranformer for the SB220 for 220volt
and
>50Hertz , someone know from were can
>I obtain formulas and charts to calculate it ,
>thanks, Francisco LU3EEC
>

Try looking at  this tutorial at U.S. Amplifiers site for "Roll your own
transformers".

http://www.freewebs.com/skunkworks/xform/xformer.htm

Gary.

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