Inductor devices – Coil or coil turn supports or spacers – Flexible filament – strip or sheet insulation
Patent
1997-07-03
1999-06-29
Gellner, Michael L.
Inductor devices
Coil or coil turn supports or spacers
Flexible filament, strip or sheet insulation
336208, 336198, H01F 2730
Patent
active
059173971
ABSTRACT:
A transformer has a bobbin having a winding surface formed at a periphery thereof. Provided on the winding surface of the bobbin are at least one primary winding layer formed by a conductor wound around the winding surface of the bobbin, at least one secondary winding layer formed by a conductor wound around the winding surface of the bobbin, and at least one insulating layer each arranged between an associated one of the at least one primary winding layer and an associated one of the at least one secondary winding layer, for insulating them from each other. The at least one insulating layer is bent at an associated one of the at least one end portion of the bobbin and extends from the winding surface of the bobbin to a portion of the bobbin other than the winding surface.
REFERENCES:
patent: 3946350 (1976-03-01), Goto
patent: 4639706 (1987-01-01), Shimizu
Gellner Michael L.
Mai Anh
Yamaha Corporation
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