Electronic timepiece

Details Electronic timepiece Electronic timepiece

1979-04-25

1981-10-20

Miska, Vit W.

Horology: time measuring systems or devices

Power supply details

Electrical

G04B 100

Patent

active

042964890

ABSTRACT:
An electronic timepiece including a primary battery as a power source, and a solar battery for charging the primary battery is provided. The electronic timepiece includes a solar battery for producing a charging current in response to solar light being incident thereon, a primary battery adapted to be charged by the charging current and a detecting circuit disposed intermediate the solar battery and the primary battery to detect the state of charge of the primary battery and in response thereto selectively decouple the solar battery from the primary battery. The solar battery can be formed of a plurality of equal area solar cells forming a dial having a non-circular configuration.

REFERENCES:
patent: 3731474 (1973-05-01), Tsuruishi
patent: 3762946 (1973-10-01), Stow et al.
patent: 3786624 (1974-01-01), Uchiyama
patent: 3983689 (1976-10-01), Burke et al.

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