Re: Early Unusual Transformer Design
There is an error, sure, but it's (hopefully) not huge in a well-designed transformer.
Even if the off-load primary current is as much as a third of the on-load current, the primary losses are still only 1/9 of what they are on-load. And as for minimum winding losses the wire gauges will be chosen so that primary losses and secondary losses are equal (this gives the lowest figure for the sum) we can infer that the off-load primary losses are 1/18 of the on-load winding losses. That's an error of under 6%.
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