The idea i'm playing with has to do with thane heinz and wilian Barbat
I have 4 CC cores ,, 3 at one side having on them the secondary and feedback coil,
and the other has the primary, the cores are than linked by a shorted turn of very thick wire…
the secondary has 220 turns, the primary is going to have 100 or 200 turns at least
the feed back coil maybe have 20 turns going into the continuation of the primary having around 7 turns…