SOLAR BATTERY POWERED BATTERY CHARGERS AND ELECTRIC POWER SUPPLY SOURCES INCLUDING SOLAR BATTERIES

摘要

1463878 Electronic timepieces SUWA SEIKOSHA KK 23 Dec 1974 [25 Dec 1973] 55469/74 Heading G3T [Also in Division H2] A wristwatch is provided with a solar battery powered charger for charging a secondary battery used as the power source of the watch, the charger having means responsive to the voltage across the secondary battery for by-passing current from the solar battery when the voltage reaches a near fully charged value. The solar battery may double as the watch face, the watch having a digital liquid crystal display and a quartz crystal oscillator.