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#1
03-19-2011, 09:14 PM
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I have used the 3w blue leds and they work well, but I don't have any Royal Blues to compare with, but there is some info on nano-reef's that the two are almost identical. I am using the Sure drivers, cheap and seem to work well, but do get quite warm when run at close to capacity.
the leds are on a nano reef so just using a 24v laptop powersupply. The sure drivers are quite forgiving for voltage and you have a wide range depending on number of LEDS used. http://cgi.ebay.com/3w-LED-Driver-MB...item3a6442f9f3
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-=Bryan=- 
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#2
03-21-2011, 07:27 PM
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#3
03-22-2011, 07:26 AM
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Well, they can run up to 8 LEDs on each driver. From the bottom of the Ebay page is a link to the datasheet, which describes the specs and voltage required for the amount of LEDS used. You will need to provide a PWM input for dimming. A simple 555 timer can take care of that.
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-=Bryan=-
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#4
03-22-2011, 01:28 PM
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Thanks, I was thinking that can't be right but I had to ask since I'm such a noob.
Will 1 24v laptop pwm be enough for 72 led's?
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#5
03-22-2011, 03:32 PM
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For 72 LEDs you'll need at least 200W which I believe is much more than the average laptop requires. You can buy other power supplies that run at 24V at much higher wattage than a laptop supply. I would go larger to the range of 300-350 W encase you ever wanted to add more LEDs. Last edited by sphelps; 03-22-2011 at 04:52 PM.
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#6
03-22-2011, 03:48 PM
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for a power supply you don't want to go by watts. while this can work it is much easier and safer to go with a constant curent output. so figure out what current you want to run at (700mA or 1000mA) then get one that has enough voltage to handle the amount of LEDs. you want to run your blues on a different power than your whites
here is an example of one of the better drivers to come out laitly http://www.nanotuners.com/product_in...roducts_id=754 this is a 64 top 114 volt driver at 1050mA you can get them bigger or smaller. Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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#7
03-22-2011, 04:26 PM
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Steve are you talking about a power supply or driver? If the driver runs off 120VAC then obviously you don't need a power supply but some drivers already discussed require a lower voltage DC supply so you need a separate power supply. The driver must be constant current but the power supply only needs to have enough power (watts) to run the driver(s). The voltage of the supply is also important and dependent on how many LEDs are in each array for each driver.
Last edited by sphelps; 03-22-2011 at 04:54 PM.
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#8
03-23-2011, 08:48 AM
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__________________
-=Bryan=-
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#9
12-15-2011, 01:15 AM
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Any of these supplies...
Can you get the following items:
http://reefledlights.com/shop/led-seal/ : this is a spray to protect the welds... by a company called Luxdrive. Philips LEDs - Rebel ES series.... apparently better than CREE in terms of lighting suitability for corals. nano-box-reef.com/ uses them. msjboy
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#10
12-17-2011, 02:53 AM
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Quote:
Steve
__________________
*everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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