Can someone explain to me what T2 in the Yellow square is all about. I am assuming it is a way to use a transformer that is not center tapped eliminating polarity control but, I'm not sure. I wouldn't think the circuit would need T1 and T2. Thanks in advance.. Chip https://drive.google.com/file/d/1cSFhf1KkwxsJs6fEZNxtjjcn7sloazqN/view?usp=sharing _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla