Even with the kinds of coils used in chokes and transformers for ham radio, which generally have relatively few windings, passing all that wire through the toroid time after time is a pain.

[Open Frime TV] has a video addressing this in a novel way, by creating the windings for a switch-mode power supply transformer using stacked PCB coils instead of wire (Russian language ...

Discover the seamless process of coil winding for ceiling fans, where skilled workers wind copper wire with precision to create the essential coils that power the fan’s motor. This critical step ...