Solar Power Battery
China's BYD to invest $3.3 bln in solar battery plant
HONG KONG, Jan 23 (Reuters) - Chinese car and battery maker BYD Co Ltd <1211.HK>, 10 percent owned by U.S. billionaire Warren Buffett's Berkshire Hathaway , will invest 22.5 billion yuan ($3.30 billion) over five years to build China's largest solar power battery plant, a report said on Saturday.
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explain me about working of scientific calculator using solar energy when battery power is down?

that is, how a scientific calculator works when its battery power is totally down?how it works when it is shown in sunlight for sometime?please give me the mechanism involved in it.

when batt not available the triac is used so the base power switches to solar cell and there if it gets energy it emmitts power to 7-segment and again ur calc is on solar batt. when u replace battreis again the triac actives through batt power.

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