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LED and Transformers question

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computer

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Hi,

I'm thinking about creating some LED Floods as on www.bigclive.com

I have drawn a new PCB file up from the controller he has designed (the layout is available as a TIF on his site and I've attached a copy below) and made it as small as possible. I've done this without affecting anything although two of the connections are swapped from the original design.

I've attached it and if possible can someone verify the design looks ok.

I'm also wanting to know whether it'd be safe/possible to power this from a standard 240v -> 12v halogen light transformer, such as this. I can rectify it or put a few components in if needed.

Also, he mentions Aligent POP LEDs for the RGB LEDs. Anyone know where I could purchase these in quantities of about 100 of each?

Thanks,
computer
 

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  • pcb_small_662.jpg
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I can't see any glaringly obvious errors - you seem to have switched the position of the LED and its series resistor (electrically speaking), not that that really matters.
 
"I'm also wanting to know whether it'd be safe/possible to power this from a standard 240v -> 12v halogen light transformer, such as this. I can rectify it or put a few components in if needed. "

As You see, the minimum load 20W, with smaller load doesn't started.
The output is 50...150kHz rectangular, so need schottky rectifier and low ESR cap.
I mean, the cheap wallwart adaptor quite enough for this cct.
 
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