Linear constantcurrent drivers, for instance, offer low EMI, low cost, and use only a few components. Many designers favor them for low-current applications where power loss is a minor concern. If ...
– 6 super-bright white LEDs (Ours were rated for 3.3v with an intensity of 7000mcd.) – 1 2N2907 PNP Transistor (We found ours in a 15 transistor combo pack from RadioShack.) – RadioShack 3x2x1″ ...
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