Variable autotransformer having an indexed stepping brush

Details Variable autotransformer having an indexed stepping brush Variable autotransformer having an indexed stepping brush

1984-06-12

1986-03-18

Beha, Jr., William H.

Electricity: power supply or regulation systems

External or operator controlled

Using a transformer or inductor as the final control device

336149, G05F 114

Patent

active

045771464

ABSTRACT:
An adjustable voltage transformer having a commutating surface formed of segments of electrical conductors upon which a contact brush is movable while in electrical engagement therewith. Means are provided to "step" the brush between segments, so that when at rest, the brush contacts no more than one segment, thus reducing short-circuiting currents and overheating; however, when the brush is being moved, it is in contact with two segments, thus allowing uninterrupted output from the transformer.

REFERENCES:
patent: 920925 (1909-05-01), Darlington
patent: 2214864 (1940-09-01), Stonehill
patent: 2273245 (1942-02-01), Ander
patent: 2812478 (1957-11-01), Allen
patent: 3016484 (1962-01-01), Mulder et al.
patent: 3160842 (1964-12-01), Neumann et al.

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