Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? If Thomas Edison were to walk down the light-bulb aisle of a modern home-improvement ...
With this circuit, any type of LED can be driven from a single-cell supply in the range of 1.0 to 1.5 V (see the figure). As a result, it can be used with alkaline, carbon-zinc, NiCd, or NiMH cells ...
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