What is an LED driver?

An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards, so ...
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What happens if I overdrive an LED?

A typical indicator LED will have a spec that represents a typical point along the operating curve. That would look something like “3.3V @ 20mA typical.” Driving this LED above ...
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Can LEDs be dimmed?

It’s useful to think of an LED as a current-driven device. The light output is proportional to the drive current over a decent range. But things go a bit odd ...
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What are the electrical characteristics of LEDs?

It’s useful to think about two main types of LEDs—the familiar indicator LEDs that come in 5mm and 3mm epoxy packages, and “illumination-grade” LEDs, which are high-output devices, designed for ...
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How do you get more light out of an LED?

LEDs are made by a process that deposits the junction materials on a substrate material. One of the limitations of LEDs is that imperfections in the material deposited on the ...
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What makes an LED such a good colored light source?

If you want a colored light, LEDs can’t be beat for efficiency. The process that gives off the light makes light of a certain wavelength, which is a function of ...
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How do they make white LED light?

There’s two main ways to get white light from LEDs: The first method is to combine light from red, green, and blue colored LEDs. If you get the right mix, the ...
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Why are LEDs different colors?

The color of an LED is a function of the material used to make the junction. There are two main flavors used in visible light LED junctions: Indium gallium nitride ...
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What is an LED?

Light Emitting Diodes, as the name states, are diodes. A diode is a semiconductor device that permits current flow in one direction. Semiconductor diodes are a junction of two materials. ...
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