In Reply to: RE: " Maybe I should be looking for a toroidal transformer" posted by dave slagle on June 13, 2017 at 04:51:32:
" There is absolutely no reason why someone cannot wind a toroid with the primary as a semicircle on one half of the core and the secondary on the other half "
Dave, have you ever wound a transformer like that? My experiments with this technique at RF frequencies indicate that coupling degrades and core losses increase significantly. Perhaps things are different at the mains frequency, or maybe I did something wrong. I tried it only on one occasion using various cores and several hundred watts of RF. I quickly abandoned the idea in favor of isolating the primary and secondary using an insulating layer of fiberglass tape between them.
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Follow Ups
- RE: " Maybe I should be looking for a toroidal transformer" - Triode_Kingdom 19:14:02 06/13/17 (7)
- RE: " Maybe I should be looking for a toroidal transformer" - dave slagle 04:31:13 06/14/17 (3)
- RE: " Maybe I should be looking for a toroidal transformer" - Triode_Kingdom 10:33:37 06/16/17 (2)
- RE: " Maybe I should be looking for a toroidal transformer" - Tom Bavis 19:31:29 06/18/17 (1)
- Thanks Tom, good info! (nt) - Triode_Kingdom 23:03:31 06/19/17 (0)
- RE: " Maybe I should be looking for a toroidal transformer" - mah 04:30:02 06/14/17 (2)
- RE: " Maybe I should be looking for a toroidal transformer" - cpotl 06:24:33 06/14/17 (1)
- RE: " Maybe I should be looking for a toroidal transformer" - dave slagle 08:38:35 06/14/17 (0)