[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 ...

Electrical coil winding machines are used to wind coils for motors, transformers, inductors, and chokes. Coil winding equipment is used in a variety of wire winding, wire welding, and wire bonding ...

Cast coil transformers have windings that are solidly-cast in resin under a vacuum in a mold. This manufacturing process covers the transformer windings in a strong, low-viscosity, epoxy resin with a ...

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.

Bel group company Signal Transfomer has announced its new Wireless Charging Transmission Coils (WCC) in both Single and Multiple Windings for smart car applications, consumer products, controllers, ...