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how to control brightness of an led? Answered

i want to design a controller so that i can control the light of led tube light. can anyone suggest me  how and where to start.
THANKING YOU

Tags:LED

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Jayefuu
Jayefuu

8 years ago

Go read about PWM dimmers.

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The Skinnerz
The Skinnerz

8 years ago

How many LEDs/how much current do you need to control?

For a few LEDs, you can use a potentiometer to add to the value of the current limiting resistor, so as you turn it, the LEDs become dimmer.

For electronic control, PWM is the most common way to control brightness, and can be done with anything from a 555 circuit with a potentiometer to adjust the duty cycle, to using the timers on a microcontroller.