Operating circuit including an oscillating circuit capacitor cou

Details Operating circuit including an oscillating circuit capacitor cou Operating circuit including an oscillating circuit capacitor cou

1992-07-21

1995-11-21

Chilcot, Richard

Electricity: motive power systems

Induction motor systems

Primary circuit control

318109, 73460, H02P 300

Patent

active

054690404

ABSTRACT:
An operating circuit for use in an apparatus for measuring unbalance of a rotary member in which the drive for the rotary member is by means of a single-phase ac motor with a single-phase main winding and an auxiliary winding which is electrically displaced through 90.degree.. Under at least approximately load-free operating conditions, a capacitor is connected in parallel with the auxiliary winding to reduce fluctuating angular speeds of the rotor of the motor when the motor is operating in an approximately load-free condition.

REFERENCES:
patent: 2454968 (1948-12-01), Fuge
patent: 3484670 (1969-12-01), Shankwitz
patent: 3646601 (1972-02-01), Lash
patent: 3754447 (1973-08-01), Turton-Smith et al.
patent: 4085619 (1978-04-01), Shapiro et al.
patent: 4675565 (1987-06-01), Lewus
patent: 4734601 (1988-03-01), Lewus
patent: 4772814 (1988-09-01), Lewus
patent: 4794288 (1988-12-01), Lewus
patent: 5201224 (1993-04-01), Rogers et al.
Patent Abstract of Japan, vol. 10, No. 282, JP-A-61-102533 dated May 21, 1986.

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