All About LEDs

Sam just shared a new tutorial: "All About LEDs"

Hello and welcome to our tutorial where we a look at all things LED. Now first of all, what is an LED? LED stands for Light Emitting Diode and is an electronic component used to convert electrical energy to light energy. This process is called electr…

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Some modern indicator LEDs will give satisfactory brightness with less than 1mA. I’m using a green LED in a 5v circuit with a 10k resistor. That’s something like 0.3mA and it’s quite bright enough on a pc board as an indicator. However if you want to run a LED in a car headlight then it will need a bit more current.