Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is an LED or light emitting diode?

April 26, 2017diode emitting LED light

0

Posted

What is an LED or light emitting diode?

1 Answer

0

Posted

Technical drawing of an LED. An LED is a solid-state electronic device that is much more efficient at creating light than an incandescent lamp. LEDs contain chemical compounds that emit light when electric current passes through them. Different chemical compounds emit different colors of light. Unlike incandescent lamps, LEDs have no filaments that can burn out or fail. Daktronics recommends LED displays employed in ITS applications use high quality second generation AllnGaP (aluminum, gallium, phosphide) technology to maximize visibility. AllnGaP LEDs ensure the display consumes less power yet produces light brighter than obsolete fiber optic, incandescent bulb, and reflective disk displays. All Daktronics displays use AllnGaP diodes. For maximum LED lifetime brightness, Daktronics recommends the LED manufacturer’s specifications always be followed when determining display drive current, which in most cases is 30 milliamps.