Inductor devices – With means to change coil length or connections – Plural coils
Patent
1978-04-03
1981-03-10
Kozma, Thomas J.
Inductor devices
With means to change coil length or connections
Plural coils
200 11TC, 323340, 336150, 336223, H01F 2112
Patent
active
042557348
ABSTRACT:
A device for transformation of alternating current-voltage which includes a core, a primary winding subassembly and a second winding subassembly. One or both of the primary and second winding subassemblies consists of at least one pair of equal turn and approximately equal resistance windings wrapped co-directionally around the core, and each having an equal number of tapped sections. A special tandem switch selectively interconnects tapped sections within winding pairs to provide a desired output terminal winding array such that all sections connected through the switch are energized, and are in the current carrying path at all selected switch positions, with selectively seriesed and selectively paralleled portions of the switch-coupled winding pairs being selectively circuited at each switch position. The functioning primary and secondary windings are asymmetrically disposed in relation to each other at most of the switch positions, and the leakage reactance is unequal through the several paired windings when they are connected by said transformer switch to place less than all of the tapped sections of each in parallel.
REFERENCES:
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patent: 3619764 (1971-11-01), Brennan
patent: 3725833 (1973-04-01), Thomas
patent: 3891955 (1975-06-01), Horton
patent: 4160224 (1979-07-01), Owen
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