Quote:
Originally Posted by W9TR
That’s odd they would put the primary and secondary on the same bobbin on an r-core. Very strange. Defeats the primary purpose of an r-core. Anyway I look forward to your results!
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I'm not sure what an R-core transformer is, I've never heard that term. If both windings are on the same bobbin that is referred to as bifilar winding. This close coupling of primary and secondary increases efficiency of the transformer. I have known this type to be called an E-core, however I'm not the "last word" on transformer design???