Toroidal transformer with space saving insulation and method for

Details Toroidal transformer with space saving insulation and method for Toroidal transformer with space saving insulation and method for

1997-07-16

1998-11-17

Leubke, Renee S.

Inductor devices

Coil or coil turn supports or spacers

Flexible filament, strip or sheet insulation

336209, 336229, H01F 2728, H01F 2730

Patent

active

058382208

ABSTRACT:
Toroidal transformers and other toroidal magnetic components need insulation between separate windings. International safety standards specify minimum requirements for both total insulation thickness and number of layers of insulation. The safety requirements can be met by a toroidal transformer insulation method and toroidal transformer having, in combination, a wide sheet of insulation material covering the outside perimeter and the top and bottom radial surfaces of a winding but not entering into the center hole, and wrapping with a narrow strip of insulation material for covering the entire winding and the wide sheet of insulation material. Because the wide sheet adds insulation on the outside perimeter of the winding, which is larger then the inside perimeter of the center hole, the outer wrapping with the narrow strip need only provide the insulation actually required on the inside perimeter of the center hole. This insulation method thus avoids unnecessary build up of insulation in the center hole of the toroidal component, and thereby saves space for toroidal winding heads and/or shuttles for wire and insulation.

REFERENCES:
patent: 5179776 (1993-01-01), Boetnitz et al.
patent: 5488344 (1996-01-01), Bisbee et al.

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