Folded foil transformer construction

Details Folded foil transformer construction Folded foil transformer construction

1998-03-04

2000-07-11

Gellner, Michael L.

Inductor devices

Windings

Having conductor of particular shape

336232, 336200, H01F 2728

Patent

active

06087922&

ABSTRACT:
An improved low profile transformer is disclosed. The transformer has desirable characteristics for switch mode power supplies such as minimum high frequency resistance, improved coupling of primary and secondary windings, and reduced eddy current losses. The transformer has a primary winding comprised of an insulated conducting foil that is folded into a staircase-shaped winding. One or more secondary winding segments comprised of U-shaped conducting sheets are interleaved with the primary winding to form a minimally separated primary and secondary winding. The windings are substantially surrounded by an E-shaped magnetic core to facilitate the magnetic coupling of the windings.

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Radcliffe, Flat Winding Transformer, IBM Technical Disclosure Bulletin, vol. 22 No. 9, Feb. 1980.

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