Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Patent
1975-07-02
1976-11-16
Kozma, Thomas J.
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
H01F 500, H01F 2728
Patent
active
039926915
ABSTRACT:
An inductor is developed on an electronic circuit board by forming plural parallel series of holes and plating a conductor pattern on both sides of the board in association with the holes. The holes are plated through with conductive material and are electrically connected by connective segments from the conductive pattern in the form of elongated straps. Each strap extends between a hole in a first series of holes to a hole in the second series of holes. The straps are arranged to produce a conductive pattern in a flattened generally helical form. The holes are drilled oversized so that, after plating, the remaining opening corresponds to a standard lead diameter. Connections may be made between a selected number of turns of the coil by inserting the leads of a circuit component in holes corresponding to the proper number of turns. The holes may be alternately staggered in relation to the control axis of the coil to maximize the number of turns in the coil for a given surface area of electronic circuit board.
REFERENCES:
patent: 3033914 (1962-05-01), Acosta-Lleras
patent: 3185947 (1965-05-01), Freymodsson
patent: 3731005 (1973-05-01), Shearman
patent: 3812442 (1974-05-01), Muckelroy
Cubic Corporation
Kozma Thomas J.
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