Transformer coil consisting of an insulating ribbon comprising e

Details Transformer coil consisting of an insulating ribbon comprising e Transformer coil consisting of an insulating ribbon comprising e

1992-07-17

1994-01-04

Kozma, Thomas J.

Inductor devices

Winding formed of plural coils

336183, 336200, 336232, H01F 2730

Patent

active

052764214

ABSTRACT:
Transformer coil consisting of an insulating ribbon comprising electrically conducting patterns making it possible to produce paralleling of the patterns when this ribbon is accordion folded.
According to the invention, one side of the insulating ribbon (25) alternately comprises one face (34; 36) with pattern (26; 27) and one face (35; 37) without pattern, each pattern (26, 27) comprising two paralleling pads (28, 29; 30, 31) prolonging each of its extremities beyond a separation line (P1, P3) in order to overlap onto the face (35; 37) without pattern in such a way that the paralleling pads (28, 29; 30, 31) of each pattern (26, 27) come into electrical contact with the extremities of the neighbouring pattern (26, 27) when the ribbon (25) is accordion folded, in such a way as to produce paralleling of the patterns (26, 27).
The invention applies especially to the production of high-frequency transformers used in switched-mode power supplies.

REFERENCES:
patent: 2911605 (1959-11-01), Wales, Jr.
patent: 4959630 (1990-09-01), Yerman et al.

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