Can somebody tell me the “inductance reading” of your ETD49 core with that 11+11 primary windings… I actually don’t have ETD49 ferrite core at the moment but I have some collective transformers from different types of power supplies. At least by getting some reference like primary inductance from actual EDT49, I can possibly compare the close ferrite material on what I have in my hands.
I did several measurements with 22Turns primary on different type of cores. Tester shows different readings like 800uH, 200uH etc… The best I got so far was the newer FBT cores.
BTW, on post #229, I answered my own questions by doing some experiments. I also add short circuit protection on it, so I can save a lot of mosfet in case of mistakes...