what power supply do i need?

BouncinBob

BouncinBob

Well-Known Member
so i just bought these off eBay,
Details about Red Blue 5050 Grow LED Strip Light Aquarium Greenhouse Hydroponic Plant 12W 12V.
from this dude,
http://www.ebay.com.au/itm/Red-Blue-5050-Grow-LED-Strip-Light-Aquarium-Greenhouse-Hydroponic-Plant-12W-12V-/301595494753?var=&hash=item46387e0961.
I already know i don't know much about electricity, beyond a natural instinct about which way the battery's go into almost any appliance. i thought i would be able to figure it out but the online calculators seem to be transcribed in some sort of spaceman language.
I've bought 3meters of LED's and 4 connectors to use in my nursery tent alongside my existing cfl lights. i thought I'd just stick the LED's to the tent walls and if they do nothing no harm and if the help cool.
anyway, any help would be great.
Thanks
 
caretak3r

caretak3r

Well-Known Member
these strips run on just about any 12V walwart or brick ac/dc power supply (it doesn't need to be constant current like most LED applications because the strips you bought have resistors on them). For 3M you'll want ~2A power supply. You wire them in parallel. If you get a more powerful power supply it is fine as well.
 
CanadianONE

CanadianONE

Well-Known Member
caretak3r said:
these strips run on just about any 12V walwart or brick ac/dc power supply (it doesn't need to be constant current like most LED applications because the strips you bought have resistors on them). For 3M you'll want ~2A power supply. You wire them in parallel. If you get a more powerful power supply it is fine as well.
Click to expand...
Those appear to be RGB LED strips. Having a look at the link posted they are the 60 leds/meter with that said each LED will draw 20ma (20ma R, 20ma G 20ma B) so if your only powering red and blue here is the breakdown. (20x0.02) x 3 = 1.2A (0.4A/meter) If these strips were run pure white then each meter could theoretically draw three times that because it would be utilizing all colors RGB to produce the white light. (20x0.06) x 3 = 3.6A (1.2A/meter) So as @caretak3r has pointed out a 12V 2A supply would be sufficient for running 3 meter steip with only red/blue.
 
BouncinBob

BouncinBob

Well-Known Member
caretak3r said:
these strips run on just about any 12V walwart or brick ac/dc power supply (it doesn't need to be constant current like most LED applications because the strips you bought have resistors on them). For 3M you'll want ~2A power supply. You wire them in parallel. If you get a more powerful power supply it is fine as well.
Click to expand...
thanks man, you rock.
 
BouncinBob

BouncinBob

Well-Known Member
CanadianONE said:
Those appear to be RGB LED strips. Having a look at the link posted they are the 60 leds/meter with that said each LED will draw 20ma (20ma R, 20ma G 20ma B) so if your only powering red and blue here is the breakdown. (20x0.02) x 3 = 1.2A (0.4A/meter) If these strips were run pure white then each meter could theoretically draw three times that because it would be utilizing all colors RGB to produce the white light. (20x0.06) x 3 = 3.6A (1.2A/meter) So as @caretak3r has pointed out a 12V 2A supply would be sufficient for running 3 meter steip with only red/blue.
Click to expand...
thanks.
 
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