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Dimming /w LM317 regulator
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Krazie4Acans View Drop Down
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Joined: December 17 2012
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    Posted: April 10 2013 at 12:54pm
I have a board that is driving 5 strings of 5 - 3 watt LED's. The board has individual circuits for each string and each circuit is current controlled by an LM317 and a resistor.

Does anyone have any quick designs that would allow me to make this LM317 circuit dimmable? resistive dimming would be the easiest as the driver board is already mounted in a hood and space is not overwhelmingly available. A 555 PWM might be an option if i can control them all with a single dimmer circuit.

Any thoughts and ideas would be very helpful. Thanks Krazie


Edited by Krazie4Acans - April 10 2013 at 12:55pm
My ocean.
90g (yup, won it!), 40g, 28g, & 10g Systems
PADI Advanced Open Water
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Erikts View Drop Down
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http://www.utahreefs.com/forum/forum_posts.asp?TID=47456&KW=LM317&PN=1&title=super-cheap-dimmable-led-driver-cost-under-3
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Points: 24177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Krazie4Acans Quote  Post ReplyReply Direct Link To This Post Posted: April 11 2013 at 12:25pm
Thanks Erik!
My ocean.
90g (yup, won it!), 40g, 28g, & 10g Systems
PADI Advanced Open Water
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