12v CPU fan powered without cord. HOW?

Airwalker16

Well-Known Member
Just as the thread name states. I just want an easy answer on how to power a 120mm 12v fan off a meanwell hlg185h-c1050b driver running 5 36v cxb3590s? It can run 5.6 per supras chart. How can I so when I plug in the 3 prong US cord into the wall, run my lights AND the fan without using a seperate old phone charger cord or the like to power the cpu fan?
 

Abiqua

Well-Known Member
So about half of that made sense.
Find a 12v version...
Only has 1 set of + and - outputs, so multiple fans will have to be all wired in parallel from one line.....

Then you wire the 12v switching power supplies AC cord in parallel with the Led Driver AC mains and you have 1 cord.
 

woz from oz

Active Member
Hi Abiqua my aged brain cant quite work out the wiring of the "regulated switching power supply". This is how I see it.
The mains connect to the "AC in" +, neutral and ground terminals. The fans connected in parallel (+ to +, - to -) and then to their driver. That driver is then connected to the + and - out terminals of the RSPS. I don't understand where the lights drive connects up can you explain? Thank you/
 

PurpleBuz

Well-Known Member
Just as the thread name states. I just want an easy answer on how to power a 120mm 12v fan off a meanwell hlg185h-c1050b driver running 5 36v cxb3590s? It can run 5.6 per supras chart. How can I so when I plug in the 3 prong US cord into the wall, run my lights AND the fan without using a seperate old phone charger cord or the like to power the cpu fan?

its more efficient to power fans with a meanwell apv-12 instead of using some sort of dc to dc coonverter. The apv-12s are cheap check them out
 

Fastslappy

Well-Known Member
OR wire in a wall wort that will power the fan . free !
tap into the power at the point where u wire the driver simple
 

Airwalker16

Well-Known Member
But I'll be using pairui drivers from cutter. I'm gonna run my whole light on Pairui brand. Their 250 model goes clear past 4000mas rather than meanwells 240 capping at 2100. I actually think they'll be a hit in a few months. 5 year warranty, aluminum housing. Looks identical to MW.
 

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Fastslappy

Well-Known Member
now you could get a mars driver they have a fan header & some have a 12v lead off them with a mini molex
 

Fastslappy

Well-Known Member
you'd have to have a battery with a solar panel
OR your spin up on fans wouldn;t start till After the COB's came on
 

Abiqua

Well-Known Member
An APV 12 isn't good for 6A at once either...and the SPS is probably near the efficiency of the APV anyway, which isn't that efficient to begin with....low 80's?
 

Fastslappy

Well-Known Member
An APV 12 isn't good for 6A at once either...and the SPS is probably near the efficiency of the APV anyway, which isn't that efficient to begin with....low 80's?
that's where PC salvage comes in those old dells they have 400 watt psu that do 12v & 5v & not alot of leads to deal with as well , less wires over a new one ( a PC style pwr spply ) .
I got a small one i got for HTPC build & a bridge terminal for 8 mini molex fittings(the ones at the ends of a PC fan )
 

Abiqua

Well-Known Member
that's where PC salvage comes in those old dells they have 400 watt psu that do 12v & 5v & not alot of leads to deal with as well , less wires over a new one ( a PC style pwr spply ) .
I got a small one i got for HTPC build & a bridge terminal for 8 mini molex fittings(the ones at the ends of a PC fan )
personally I like the 2.19mm connections and don't mess around with Molex at all, but I feel you on the PC, good emergency or Whole Room Power Supply! APV's are great drivers [I run them too!] but they are only realistic for the smallest of grow imho......I have a crimper and everything, cost $10 bucks plus the male and female 2.19mm 2/3/4 wire connections...Make your own Fan headers :peace:
 

nevergoodenuf

Well-Known Member
you'd have to have a battery with a solar panel
OR your spin up on fans wouldn;t start till After the COB's came on
A cold heat sink should protect it for the second or 2 it would take, but can the light fixture power the fans? Otherwise set up a 12 volt power strip for all your lights in the room off one power supply. 12 volt plugs on the ceiling.
 

Fastslappy

Well-Known Member
I tried getting a PCB with 8 Or 4 fan headers (they use them in R/C racing cars)
& that silverstone was cheaper & best of all enclosed ,hard wired to a PCB /w a lead off it

I look in the PC Watercooling sites that sell gear , those guys stress Clean Look !
everything is sleeved !!
find what I want , then seach ebay from china for the exact item @ 300% less than that site I just stole their idea from .
fleabay search function really works
 
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J-Icky

Well-Known Member
This is what I used to power 6 AA64gt fans, had to cut some plastic off the controllers so the 4 pin from the fan would fit the 3 pin on the controller but I could have ran 12 of the AA64 gt fans off this setup if I needed.

Power cord
http://www.coolerguys.com/840556029977.html
Fan Speed controller x3
http://www.coolerguys.com/840556094296.html
Fan port hub
http://www.coolerguys.com/840556097600.html

I know the OP wanted cordless but there is no splitting and reconnecting wires, although it is a bit more expensive. But on the other hand it does give you control of the fan speed. Oh and something of note, with the AA64gt fans I believe I really only get 2 speeds(probably 5v/12v) and off, although I could be wrong as I have nothing to actually measure the rpms just judged off of sound and as I turned the controllers up or down.

I also plan to hook up a couple more fans for intake and exhaust using this and placing it all inside small case with holes for the speed knobs so I can adjust without opening the case.
 
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