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LED Lighting: More to It Than You Think (.PDF Download)

How hard could it be to turn on an LED? Connect the LED in series with an appropriate resistor and hook it up to a dc source with the correct polarity and voilà, instant LED light. Of course, you can do that with a simple LED “pilot” light, but when it comes to lighting multiple LEDs or designing them into homes or vehicles, it’s more of a challenge. As it turns out, efficiency is a big issue. In most cases, the best way to light an LED is to use specially designed

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