Great work, guys. I read about the Bedini device on OU.com and other sites but never tried to acutally build anything. It's good to meet other experimenters who work at the component level, too.

Wouldn't FET's have less loss than bi-polar transistors? I mean the higher impedance of FET's should increase the efficiency of the circuit overall.

If I understand Bedini's theory, he utilizes the back-emf as a secondary source and adds it back into the primary. ????