Electronic timepiece

Details Electronic timepiece Electronic timepiece

1982-03-12

1984-05-01

Miska, Vit W.

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

318696, G04F 500, G05B 1940

Patent

active

044457847

ABSTRACT:
A driver circuit for a stepping motor having a coil, a stator and a rotor receives pulse signals from a pulse signal generator to rotationally drive the rotor. A rotation detection circuit comprises switching circuitry switchable between a high impedance loop formed of the coil and a high impedance element and a low impedance loop formed of the coil and a low impedance element, and means for detecting the voltage induced in the coil. After a pulse signal is applied to the stepping motor, the switching circuitry forms the high impedance loop and the detecting means compares the voltage developed across the high impedance element with a predetermined voltage to thereby detect the rotation and non-rotation states of the rotor.

REFERENCES:
patent: 3855781 (1974-12-01), Chihara et al.
patent: 3896363 (1975-07-01), Kinsel et al.
patent: 4032827 (1977-06-01), Dobratz et al.
patent: 4212156 (1980-07-01), Kawamura et al.
patent: 4326278 (1982-04-01), Shida et al.

Affiliated with

Also associated with

Rating

Electronic timepiece does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic timepiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic timepiece will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2028628