justwantin
New Member
I have finalised a little project involving 2 arrays of LEDs and need to select a 12V wall wart to power it. I have been testing with a homemade 1.5-30V powersupply that is supposed to deliver at around 1.5A but I don't really know what the actuall current is at the 12.5 I've been testing at. I am using 2 lm317's to provide 7V to one array and 5V to the other. The online array wizard I used to check my array and resistor sizes says I would be drawing 700mA and 200mA respectively.
Both lm317's have heatsinks and are just a slightly warmer than ambient to touch at, say, 20-25C after several hours running.
Would a 12V 1A wallwart be suitable for this appilcation?
Both lm317's have heatsinks and are just a slightly warmer than ambient to touch at, say, 20-25C after several hours running.
Would a 12V 1A wallwart be suitable for this appilcation?
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