Single phase alternating current motor dual speed control circui

Details Single phase alternating current motor dual speed control circui Single phase alternating current motor dual speed control circui

1976-01-09

1977-06-14

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318224A, 318225R, H02P 144

Patent

active

040300099

ABSTRACT:
A double pole-double throw dual speed control switch for a single phase AC motor having high speed main and starting windings and a low speed main winding is operable to a high speed operating mode position in which the high speed starting and running circuit including the high speed main and starting windings in parallel is completed and to a low speed operating mode position in which the low speed starting circuit including the low speed main winding and the parallel combination of the high speed main and starting windings in series is completed. A potential sensitive switching device responsive to a potential of a predetermined magnitude across the low speed main winding is effective to interrupt the low speed operating mode starting circuit and to establish a low speed motor running circuit for the low speed main winding.

REFERENCES:
patent: 2743406 (1956-04-01), London
patent: 2774024 (1956-12-01), Brammerlo
patent: 3049654 (1962-08-01), Brucken
patent: 3110852 (1963-11-01), Brucken et al.
patent: 3389316 (1968-06-01), Roby

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