NORTH TEXAS (CBSDFW.COM) - Koehler-Bright Star has recalled flashlights due to an explosion hazard. The flashlights are missing an encapsulation on a circuit board component that protects the ...
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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