11-07-2018, 06:17 AM
"It isn't a very good method - how would you know what wire gauge to use? " I would think you find core area to give you your VA, divide by 240 then use a wire gauge/I chart to get gauge. To wind a secondary I put on 10 turns, measure V, then divide secondary needed voltage by that, then measure 10 turns, in the tfmr I just wound 10 turns = 4.38v AC RMS = 6ft, I just add on a good safety margin and tweek at the end of wind. I never worry about having any room left as I overwind the tfmr's and never use all available "power".
"measure the size of the cross section and multiply calculated area by 0.92)" this gives you what?
Andy.
"measure the size of the cross section and multiply calculated area by 0.92)" this gives you what?
Andy.
