I have wound up perhaps 30 transformers on the BN202-73 cores over the last 
three years for myself and friends and have had no problems with shorted 
turns.  I have used #26 enamel for the 5-turn windings and whatever small 
insulated wire I have on hand for the 2-turn winding.
I have not found one core with a rough edge (all my cores came from Amidon), 
but to be sure I do not pull the wire tight to the core.  I check each 
transformer after winding and "Goop" the leads to relieve stress.
Are we making a mountain out of a mole hill here?
Bill, VE3CSK 
_______________________________________________
Topband mailing list
Topband@contesting.com
http://lists.contesting.com/mailman/listinfo/topband
 
 |