DIY LEDs - The write-up

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The HLG-240 don't dim. The 185 do.

Order 4 ELN and see if it works. If it doesn't order an HLG for the whites and use the two ELNs on the blues.

How close together are the tanks? Order 2 HLG and wire the tanks together?
 
Anyone have the link where you can purchase all the different Meanwell drivers. I can't seem to find it. It allowed you to see every model and then select voltage, type, etc.

Edit: Nevermind, I found it. It was wattsupply.com.
 
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TheFishMan65 said:
How close together are the tanks? Order 2 HLG and wire the tanks together?
Click to expand...

I'm thinking this might be the ticket. (6) 48D would run around $204 and I should be able to get 2 HLG for the same. Dont know if I want the tanks tied together but this might be the best solution. Now where do I find (2) HLG-185-48Bs in stock?

I could run (3) strings of 12 XP-E on 1 HLG and (3) strings of 12 XP-G on the other right?

At say 900mA that would only be 2.7 amps and I believe the HLG is good for 3.5 amps at 48v.
 
Gold Stripe said:
I'm thinking this might be the ticket. (6) 48D would run around $204 and I should be able to get 2 HLG for the same. Dont know if I want the tanks tied together but this might be the best solution. Now where do I find (2) HLG-185-48Bs in stock?

I could run (3) strings of 12 XP-E on 1 HLG and (3) strings of 12 XP-G on the other right?

At say 900mA that would only be 2.7 amps and I believe the HLG is good for 3.5 amps at 48v.
Click to expand...

You might want to consider the HLG 120 in 42V. i am running 4 strings of 10 at 700ma off it. It will handle 3 strings of 12 because they will only drop 3.2-3.3V and the 42v version puts out 2.9A so you will get near 1000ma in each string...~970ma.

As Fish pointed out wattsupply.com carries them. But unless they changed in the last few weeks they are special order but they get them once you give them them the okay on the slight delay which is no more than a week. A direct call may short cut that whole thing some.
 
NO, you need black 3 inches thick!

Clear is fine, thinner is better just because it lets more light through, but nothing is wrong with 1/4 inch.
 
So could someone do a quick write up with the formulas to determine how many LEDs a particular driver could handle? (or point me to the info)
 
brassmonkyballs - I do agree kcress knows his stuff. He helped me on the 300 build. As far as using the larger drivers. If you are safe and take all the precautions it is no problem. The smaller 40w units can drive up to 15 LED's and are much easier to wire. You think about it for the ELN...

ELN - $34.00
10v Wall wart - $5
POT - $2

TRP/Inventronic 40w - 37.95
POT - $2

It runs cooler, easier to wire, inrush wont give you a head ache and a much smaller/streamline driver.

I've used both on MANY builds now and really do prefer them. The larger ones will save you a mess or wiring and much easier to dim.

-D
 
Lotta good stuff here!

Please note, I find it fascinating that the ELN60s seem willing to put out far more than their spec'd 1.3 amps. However running them at some value higher will make them run hotter than they would otherwise. Hotter usually means a shorter life. I suspect for various reasons that you could get away with running them a little higher, especially since their adjustment allows it. If they indeed feel immediately threatened their Over Current (O.C.) protection will kick in.

A switcher is a "power converter" Volts x Amps. If you cut back on volts the amps get to increase. There are other issues but that's the simple view. If you don't try to pull the maximum voltage out of the driver it's likely that you can pull a little more current, especially if you keep the ELNs cool. That means not mounting them directly next to each other (leave a gap) and don't mount them horizontally (mount vertically) and they aren't in a closed box roasting somewhere.

You mileage may vary.
 
DFason said:
brassmonkyballs - I do agree kcress knows his stuff. He helped me on the 300 build. As far as using the larger drivers. If you are safe and take all the precautions it is no problem. The smaller 40w units can drive up to 15 LED's and are much easier to wire. You think about it for the ELN...

ELN - $34.00
10v Wall wart - $5
POT - $2

TRP/Inventronic 40w - 37.95
POT - $2

It runs cooler, easier to wire, inrush wont give you a head ache and a much smaller/streamline driver.

I've used both on MANY builds now and really do prefer them. The larger ones will save you a mess or wiring and much easier to dim.

-D
Click to expand...

Agree completely, especially on those smaller ones. i was just replying in general to the question on why maybe more people don't look at them. The small one is definitely cheap but when I looked into the larger ones I recall the prices were pretty high and I couldn't get them.

Its interesting that some companies have gone the route of high voltage for series connection and others current for parallel use. Good news is it gives us choices. I still don't think theres enough choices but it seems to be picking up all the time.
 
So im going to need an additional eb8 to plug the hlgs into so after my apex dims them to 0% it can cut power to the drivers. Anyone know if there are any power up issues when they are turned back on while dimmed to 0%?
 
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