Inductor devices – Winding formed of plural coils
Patent
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.
Alcatel Converters
Kozma Thomas J.
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