One of the questions that hobbyists ask over and over is how to select the value of a current limiting resistor for an LED. Usually the seat of the pants response is: “Subtract 2 V from the supply ...

Most small-size color LCD displays today use white LEDs for backlighting. These systems usually involve handheld devices with an LED drive circuit powered by a battery whose output voltage varies over ...

Thanks to their improved luminous efficiency and longer life, coupled with increased demands for a wide color gamut, light-emitting diodes (LEDs) are steadily replacing the venerable cold-cathode ...