Horology: time measuring systems or devices – Signalling means – Time condition responsive
Patent
1979-06-19
1981-04-07
Rubinson, Gene Z.
Horology: time measuring systems or devices
Signalling means
Time condition responsive
368250, 368 73, G04C 300
Patent
active
042610508
ABSTRACT:
An electronic watch having a stepping motor and equipped with an alarm, in which the number of power transistors necessary for the control of the stepping motor and of the alarm transducer is reduced so as to permit the integration of all the electronics of the watch of a single chip and to reduce the number of terminals of the integrated circuit and the number of interconnections.
A pair of the power transistors (5, 6) is common to the control of the motor coil (11) and of the alarm transducer coil (12) and the alarm control signal is inserted between the driving pulses.
REFERENCES:
patent: 4068461 (1978-01-01), Fassett et al.
Conklin John B.
Ebauches Electroniques SA
Rubinson Gene Z.
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