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Do It Yourself (DIY) paradise for tube and SET project builders.

RE: power transformer design questions or call it debate .


I covered this beautifully eight years ago - after about 30 years of A-Bing this on DHT amplifiers, almost always Class A1.

Boy, did I make enemies. Here goes, to remind you all:

DCR of half the high voltage secondary winding (if a center tap) or entire secondary( if a non center tap) of a typical (audio output tube) amplifier :

" HIGH FIDELITY" is 20 Ohms or less DCR.

" ULTRA HIGH FIDELITY" is 10 Ohms or less DCR.

And this hasn't changed ONE IOTA.


Jeff Medwin

Edits: 04/26/12

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