Electronic timepiece

Details Electronic timepiece Electronic timepiece

1981-05-22

1983-07-26

Roskoski, Bernard

Horology: time measuring systems or devices

Power supply details

Electrical

368 66, G04B 100

Patent

active

043951384

ABSTRACT:
Energy is conserved and the life of a lithium battery is extended in a timepiece by using a voltage reduction circuit for normal operation and a voltage regulating circuit during periods of heavy current drain, e.g., alarm or lamp function. A no-clock detector indicates the functional status of the timekeeping standard signal generator and voltage is raised to enable self-starting when oscillator signals are absent. A timer holds the regulated voltage on-line until operations stabilize after a period of heavy load and capacitors used in the voltage reduction circuit bolster the regulated voltage output during high load periods.

REFERENCES:
patent: 3999368 (1976-12-01), Yoshida
patent: 4094137 (1978-06-01), Morokawa
patent: 4226081 (1980-10-01), Ichikawa
patent: 4298971 (1981-03-01), Morokawa et al.

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