Hello all. New member, first post. I am helping a friend make a step-up transformer. The plan is to use a square spit ferrite core. I will be machining plastic spools to wind the coils on. Does it matter if the i.d. of the spools are round vs. square to match the cross section of the ferrite? This will be for a low amperage, low power application. Coils will be wound with 18 ga formvar coated magnet wire, 500 turns on the primary, 3000 turns on the secondary. I am a novice, mechanical engineer with limited EE knowledge, i.e. "V = I R, touch one wire at a time and wear tennis shoes." Please let me know if my questions are better suited for a different forum.
Thanks
Thanks