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8th Dec 2021, 5:13 pm

An inverted toroid, wire is in a cylinder which is easy to wind. The outer and inner core is all the iron bits which don't have to connect, easy to wind... until we had winding machines for toroids.

8th Dec 2021, 5:13 pm	#3
Guest Guest Posts: n/a	Re: Early Unusual Transformer Design An inverted toroid, wire is in a cylinder which is easy to wind. The outer and inner core is all the iron bits which don't have to connect, easy to wind... until we had winding machines for toroids.