Meanwell RSP-1500-48

[licoricetree]

Is this a possible driver for 24 cobs in parrelel? From what i see if 4 cobs out of the 24 went out i would still be withen spec for lets say cxm-22 or vero29 unless im wrong. obviously this would have to be run on 220v ac

 

[licoricetree]

Someone has to know? or used a similar driver

 

[licoricetree]

not letting this die.

 

[licoricetree]

Would love to have 2 drivers in a server rack to cover two 8x10 rooms filled

 

[shadow_moose]

If you ran 24 CXM-22 in parallel off that guy you would see about 1250 mA draw per COB maximum, 65 watts or so. This gives you some head room if you're using larger heat sinks, but I would recommend 26 50V COBs instead, putting you at 1150 mA per COB, about 60 watts. This puts things into safer territory when it comes to thermal runaway, allowing you to actually drop like 4 whole chips and still be fine.

 

[shadow_moose]

Would love to have 2 drivers in a server rack to cover two 8x10 rooms filled

These guys support current sharing, so theoretically, up to 6 kW (3+1 driver units) you can just wire them in one MASSIVE parallel array. I'm talking like 100 COBs in parallel.

 

[Plant Lobbyist]

The problem is the constant voltage and LEDs fluctuating their vfr with current and heat.

Would be nice if someone could show a PC power supply conversion to power LED in a guide somewhere since you can get those power supplies anywhere.

 

[shadow_moose]

The problem is the constant voltage and LEDs fluctuating their vfr with current and heat.

Would be nice if someone could show a PC power supply conversion to power LED in a guide somewhere since you can get those power supplies anywhere.

PC power supplies all run at 12V, although often pretty high amperage. They've got three rails generally for different voltage spec components within the PC. Each rail is essentially a buck regulator with a specific voltage and available current. You would need a sizable transformer to boost that voltage to the point where we can run COBs.

 

[Plant Lobbyist]

Its the same as this meanwell - constant voltage. The solution for this would work for PCs which is why I brought it up.

I would do it but I am just too lazy and spoiled with a stockpile of cc drivers.

 

[licoricetree]

these have one oultet for dc on this one http://www.mouser.com/ds/2/260/RSP-1000-SPEC-806406.pdf

so i think some will work some wont it seems.on ebay there is a steal for these type of drivers.

 

[shadow_moose]

Its the same as this meanwell - constant voltage. The solution for this would work for PCs which is why I brought it up.

I would do it but I am just too lazy and spoiled with a stockpile of cc drivers.

You don't need converters for this specific MW. You would definitely need some boosters for a PC power supply.

 

[licoricetree]

Don't need converters, output voltage is programmable 43-56V on the RSP-1500. http://www.mouser.com/ds/2/260/RSP-1500-SPEC-806383.pdf

Ok just as i figured awesome. I have an idea for a big area but i dont want multiple drivers. So i am thinking about two of these on a fan cooled server rack. to cover two 5*10 areas 24-32cobs in each room. This will be in a newly built garage, im up here in Maine so ambient temperatures are manageable especially in a concrete floor garage.

 

[licoricetree]

With this type of driver i should put a grounding rod in the floor lol.

 

[licoricetree]

guessing 12awg wire is needed jesus do bjb connectors even accept 12 gauge

 

[goofy81]

You wouldn't need 12awg to every led in parallel. Wire it like a manifold so you have one main cable and small ones tapping off it to your LED.

 

[licoricetree]

You wouldn't need 12awg to every led in parallel. Wire it like a manifold so you have one main cable and small ones tapping off it to your LED.

Thats what i was figuring cause amps get split at manifold ty thats what i was wondering.

 

[Keith41510]

I came across alot of these power supplies and a pile of aluminum led strips i dont know anything about them except i screwed2 sets of 15 strips on 2x2s making 2 panels at 42"×32" hung them in a 5'×10' grow tent and plugged them into 1 of those power supplies i vegged for 1 month then flowered and harvested about the same as i did running 2 600 watt hps bulbs without the heat problem so i didnt need as many fans or a airconditioner because the lights dont even get warm and they draw a fraction of the power the hps bulbs did. I even made a couple clone racks with strips. The buds were fat and dense im definatly happy. I have some for sale if anyone is interested.

 

[nfhiggs]

PC power supplies all run at 12V, although often pretty high amperage. They've got three rails generally for different voltage spec components within the PC. Each rail is essentially a buck regulator with a specific voltage and available current. You would need a sizable transformer to boost that voltage to the point where we can run COBs.

If you can isolate the negative leg of the output from ground, you can "stack" them, essentially running them in series, for higher voltage without the need for boosters. I saw a page a while back that showed how to do this with 1000W Dell server supplies.

 

[nfhiggs]

I came across alot of these power supplies and a pile of aluminum led strips i dont know anything about them except i screwed2 sets of 15 strips on 2x2s making 2 panels at 42"×32" hung them in a 5'×10' grow tent and plugged them into 1 of those power supplies i vegged for 1 month then flowered and harvested about the same as i did running 2 600 watt hps bulbs without the heat problem so i didnt need as many fans or a airconditioner because the lights dont even get warm and they draw a fraction of the power the hps bulbs did. I even made a couple clone racks with strips. The buds were fat and dense im definatly happy. I have some for sale if anyone is interested.

I might be interested - PM me with details on what you have.

 

[Keith41510]

If you can isolate the negative leg of the output from ground, you can "stack" them, essentially running them in series, for higher voltage without the need for boosters. I saw a page a while back that showed how to do this with 1000W Dell server supplies.

I might be interested - PM me with details on what you have.

I might be interested - PM me with details on what you have.