Method of supplying power to a single phase step motor

Details Method of supplying power to a single phase step motor Method of supplying power to a single phase step motor

1991-06-18

1993-09-21

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318138, 318430, 368157, 368160, H02P 706

Patent

active

052472353

ABSTRACT:
Method of supplying power to a single phase step motor of a time-piece, adapted to provide the motor with chopped voltage pulses of time-period T.sub.6 variable with respect to the load conditions and to the supply voltage of the motor, characterized in that each said impulsion of chopped voltage is composed of a sequence of elementary pulses of the same polarity and of a constant duration T.sub.4, and in that the durations T.sub.5i separating the said elementary voltage pulses vary according to load conditions and according to the supply voltage of the motor variable with respect to the load conditions and to the supply voltage of the motor.
The invention finds a field of application in motors for time-pieces.

REFERENCES:
patent: 3609486 (1971-09-01), Feldhoff
patent: 4042865 (1977-08-01), Gurwicz
patent: 4361410 (1982-11-01), Nakajima et al.
patent: 4467256 (1984-08-01), Antognini et al.
patent: 4468602 (1984-08-01), Antognini et al.
patent: 4542329 (1985-09-01), Xuan

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