Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1973-11-30
1976-05-18
Schaefer, Robert K.
Electricity: motive power systems
Open-loop stepping motor control systems
H02P 700
Patent
active
039581675
ABSTRACT:
A reversible pulse-motor driving circuit comprising a steady driving circuit composed of an oscillator circuit, a frequency divider circuit, a waveform conversion circuit, and a driving circuit, and a fast correction driving-circuit composed of a fast correction set-circuit, a first gate circuit, a detector circuit, a normal and reverse discrimination circuit, a conversion change-over circuit, a pulse selector circuit, a first memory circuit, a second gate circuit and a second memory circuit, whereby a user can hear a time signal delivered from a calculation circuit and only push a pushbutton to rotate the pulse motor in a reverse direction when the second hand is ahead of the correct time, and rotate the pulse motor in a forward direction when the second hand is lagging with respect to the correct time, and the use of a frequency higher than the steady driving frequency permits a fast setting of the second, minute or hour hand to the correct time. A reversible pulse motor for use in timepiece and more particularly in wrist watch is disclosed which can be rotated in forward and reverse directions by the driving circuit, which is small in size and which can operate with a minimal consumption of the electtric power.
REFERENCES:
patent: 3112433 (1963-11-01), Fairbanks
patent: 3441821 (1969-04-01), Tomota et al.
patent: 3458786 (1969-07-01), Thompson
patent: 3541417 (1970-11-01), Frank, Jr.
Machida Takayasu
Nakajima Fumio
Nikaido Akira
Onda Mitsuo
Toida Takashi
Citizen Watch Co. Ltd.
Dubno Herbert
Duncanson Jr. W. E.
Montague Ernest G.
Ross Karl F.
LandOfFree
Pulse motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2238879