Steve Flood wrote:
> I am building a 2x 813 amp and am looking for a filament transformer. I need
> some coaching on a couple options since I cannot seem to locate a proper 10V
> 10A transformer.
>
> 1) Use a 13v @ 20A transformer with a Variac.
>
> 2) Rewind a microwave oven transformer secondary with 10 turns of #12 THHN.
Either should work fine - it's fairly uncritical. I used a pair of 4.5V
50VA transformers - 4.5V is a common stock voltage over here - which
also provides a convenient centre tap.
Don't forget to remove the shunts if you use a microwave transformer.
Steve
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