Inductor devices – Inductive regulators with no relatively moving parts – With magnetic shunt to increase leakage reactance
Patent
1989-12-11
1990-06-26
Kozma, Thomas J.
Inductor devices
Inductive regulators with no relatively moving parts
With magnetic shunt to increase leakage reactance
336210, 336212, H01F 2726
Patent
active
049375474
ABSTRACT:
A ballast assembly for a fluorescent lighting fixture has a magnetic core, a primary winding and a secondary winding, both windings mounted on a central leg of the core, with a shunt disposed between the windings to prevent a flux generated by the primary winding from coupling with the flux generated by the secondary winding. The ballast further includes a shunt retaining clip disposable between the windings, the clip including a essentially U-shaped wall having a pair of upright portions and a crossover portion, a bottom ledge attached to the crossover portion for accepting the shunt. A spring arm extends between the pair of upright wall portions of the U-shaped wall with the spring arm sized to resiliently engage a top surface of the central core leg. By resiliently engaging the top surface, the clip and the shunt positioned thereon are accurately located relative to the central core thereby assuring long-term stability of the shunt, increasing efficiency and eliminating inconsistencies in magnetic flux concentration from ballast to ballast.
REFERENCES:
patent: 3010050 (1961-11-01), Hume et al.
patent: 3371301 (1968-02-01), Higano
patent: 4800357 (1989-01-01), Nickels, Jr. et al.
patent: 4857876 (1989-08-01), Costa
Ruggiero Thomas
Van Wagener Raymond H.
Kozma Thomas J.
Magnetek Universal Manufacturing Corp.
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