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my dyna mk III output trans has resistance readings that concern me
please advise.
Center tap B+ to blue plate lead 120 ohms
center tap B+ to blue-white plate lead 80 ohms
are these readings indicative of a properly functioning
MK III output transformer
thanks
Follow Ups:
Yes, that's correct for ANY output transformer that's not Bifilar wound. Because one half of the output coil is wrapped around the other, one has a larger diameter and therefore more wire, hence more resistance. But, the inductance is correct for each half and that's what counts here.
Go over to to the Dynakit Basket site.
http://dynacotubeaudio.forumotion.com/t234-dynakit-mark3-transformer-testing
There are measurement guidelines there.
These are the measurements on new Triode MKIII outputs:
Blue-CT= 67.5 Ohms
Blue/White-CT= 77 Ohms
Green-CT= 22.5 Ohms
Green/White-CT= 25.7 Ohms
Craig
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