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This instructable will guide how to use LEDs and how to make simple basic LED circuits, which current limiting resistor to use for operating LEDs with 3V, 6V, 9V & 12V. An LED is an important component in electronics, it is used for several indication and other decoration purposes.
In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
The requirements of a lighting application often dictate what type of circuit can be used, but if given the choice, the most efficient way to run high power LEDs is using a series circuit with a constant current LED driver.
LEDs (that's "ell-ee-dees") are a particular type of diode that convert electrical energy into light. In fact, LED stands for "Light Emitting Diode." (It does what it says on the tin!) And this is reflected in the similarity between the diode and LED schematic symbols: In short, LEDs are like tiny lightbulbs.
Maxim's describes the properties of old and new LEDs, and performance required for power sources that activate them. Find a guide to LED circuit designs and LED basics & operation.
You may know that LED lights are more efficient than incandescent bulbs, but do you know how to design and build your own LED circuit? How would you minimize power consumption and maximize efficiency?
Complete Arduino LED tutorial. Create a circuit with an Arduino board and an LED, and learn how to control the LED with programming.