09-20-2015, 05:29 PM
Well, glad you asked, because it does matter when there are feedback circuitry attached to the secondary windings, and I was not thinking of that when I responded earlier. Generally we want negative feedback, and if you reverse the primary windings on an output transformer you will get a terrible hown when you fire it up. So whenever you are faced with this hook up a junk speaker and variac to sort it out. I suppose you could use a signal generator and scope to get it right the first time, or you can do it my way.
