07-04-2011, 06:52 PM
IMO, its more a matter of fitting the turns on a reasonably sized form. I had to rewind one (BCB) recently in a 30s era radio and it seemed like the original was around 34-36ga. All I had was 30 and 38. 30 wouldn't fit but it did turn out ok with 38 although I had to tweak it quite a bit with my AADE L/C meter. There was 15-20 turns of difference.
The problem in doing like I did going from 34 to 38 was there's a difference in the distributed capacitance. So although the inductance came out ok, it didn't track as well as the original.
Using 38 when you can do the job on the smaller secondary with 32 simply introduces more production issues.
The problem in doing like I did going from 34 to 38 was there's a difference in the distributed capacitance. So although the inductance came out ok, it didn't track as well as the original.
Using 38 when you can do the job on the smaller secondary with 32 simply introduces more production issues.
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