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An LED is a light-emitting diode. Lighting an LED is considered the "Hello world" of a circuit design, and it can be as simple as using a series resistor, or it can get more complicated, involving PWM and multiplexing.

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High Power LED connected to Dry battery

First, you must understand that your question is incomplete without some specifications of your "12V 6W SMD LED". … Having said that, since no real straightforward LED (light emitting diode) device works with a forward voltage of 12V, I suspect what you have there is really a "LED bulb" made of several real LEDs, and …
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