Step motor for electronic timepiece

Details Step motor for electronic timepiece Step motor for electronic timepiece

1974-07-17

1976-07-13

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

58 23D, H02K 3700

Patent

active

039696421

ABSTRACT:
A step motor particularly suited for use in electronic timepieces wherein the induced current generated by the stepping of the rotor is utilized to minimize the power consumption thereof. The step motor includes a permanent magnet rotor adapted to be stepped through a specific angle, at least two stator poles surrounding same, and an electromagnetic core coupled to the stator poles for providing at least first and second magnetic orientation to said stator poles in order to step said rotor through the specific angle. Coupled to the electromagnetic core is a circuit for applying driving pulses to the stator pole to effect said orientations thereof, and a second circuit coupled to said first mentioned circuit for terminating each drive pulse applied to said electromagnetic core at a time coincident with completion of the stepping of the rotor through the specific angle.

REFERENCES:
patent: 2457637 (1948-12-01), Brailsford
patent: 2601517 (1952-06-01), Hammes
patent: 2704334 (1955-03-01), Brailsford
patent: 3375384 (1968-03-01), Thees
patent: 3597915 (1971-08-01), Aizawa
patent: 3657583 (1972-04-01), Tamaru
patent: 3720864 (1973-03-01), Kolhagen
patent: 3731125 (1973-05-01), Nikaido
patent: 3818690 (1974-06-01), Schwarzschild

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