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Adjust brightness LED with power not dimmable

Post Number:#1 Post Tue Dec 30, 2014 12:25 am
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sorry for my english .
I purchased Ferduino Mega 2560. I am waiting for arrivals .
I want to know how to adjust the light of my lamp led. The ceiling is made up of 72 LED 3W . A power supply for 18 LEDs .
Enclosed is the link to the type of feed used . I would like to adjust the brightness of my 4 channels .

Thanks for any replies. ... cts_id=737

power not dimmable

Post Number:#2 Post Tue Dec 30, 2014 10:20 am
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Welcome Daniele!

Use a MOSFET to each channel as on this circuit.


Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.

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