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Solar power calculator

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The solar power calculator has been popular for many years. So small and efficient is the solar powered calculator than many do no realize that it is actually solar powered.

Solar powered calculators became more widely available in 1978, and this was in part due to the calculator’s conversion to a Liquid Crystal Display (LCD). The switch to LCD made the calculator more compact and energy-efficient. So efficient that a small single solar cell producing 3-volts of electricity is enough to power it.

Because of this amazing efficiency, a solar power calculator is able to work even in week indoor light. There are two types of solar power calculators, ones that have a rechargeable battery to store solar energy and ones that are do not. Because of the small energy draw of the circuitry and LCD light display, buying a calculator without the rechargeable battery is preferred.
A popular experiment with electronic hobbyists is repurposing a solar power calculator. The single solar panel on a calculator is three volts or more, and this voltage is capable of powering a low-intensity LED. This can make a fun DIY reading light.

The solar power calculator is available for the same retail price as a battery powered device. So the next time you need a replacement, take a close look at the calculator, and if you see a small solar panel imbedded in its design, then this is the calculator for you.

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