Congrats Barb
I really enjoyed the write-up, and was really curious as to the secret ingredient and how you obtained nearly twice the power I did. ?I was also at your banquet table.?
A fun little competition. I used basically the same IC, but used a push-pull configuration on the theory that it would generate less heat. I did lots of trial & error to find the best turns ratio. As you found out, the eleven volt supply level was the death point for the chip. Your custom circuit board was intimidating, as I typically dead-bug my circuits. Thanks for sharing your design process!
73 Paul K9ARF
