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Discussion starter · #4 ·
Quote:
Originally Posted by lirtle View Post

Oh crap! I just realized I was looking at the wrong model. Not sure how much it actually differs from the original one I posted though. This is where i extracted that quote from:
Link
I still don't know what they are on about even for the 24W model. A pumps starting voltage is the volts needed to get it moving. That would apply to something that reduced output voltage but the adaptor just outputs 12V. Well above starting voltage.

I assume they probably mean that you can't use the 5V output to slow down one of the Voltage control pumps like a DDC. That does not apply to a pump like a D5 Vario or PWM.
 
Quote:
That's the same type adapter as the Phobya one linked in the OP except it's only 2 Amps instead of 5 Amps.

A D5 vario up to speed 4 will draw 2 Amps or under but on speed 5 will draw closer to 3 amps. I've used a 12v molex adapter almost identical to that 2 Amp coolerguys one (This one, to be exact) for a D5 Vario on speed setting 3 or 4 just for filling and bleeding on several different occasions. I really can't imagine the Phobya one not being able to do the same since it's the same thing except even more higher power rated. That said, I wouldn't use either adapter or one like it as a long term / permanent power supply for the pump because in my experience they don't tend to have a very long lifespan when used continuously like that.

If I was going to go with an external pump I'd just make up my own PSU cable from the computer's power supply, or even just an extension cable, and route it outside the case to the pump just the same as you are going to have to do with the tubing. It would look tidier than an external power supply and you wouldn't have to worry about it not providing adequate power for just a pump.
 
Why don't you get a molex stand alone adapter and adapt molex to the 3 pin header you need? I did this for my D5 pump and my 720 pump for bleeding purposes.
get one of these > http://www.ebay.com/itm/USB-2-0-to-SATA-IDE-Hard-Drive-Adapter-for-2-5-3-5-SATA-IDE-to-USB-/231322953487?pt=LH_DefaultDomain_0&hash=item35dbec270f
and then a molex to 3 pin adapter, which should come with practically any case fan you buy.

The tool linked is also handy for slaving other hard drives to your laptop
smile.gif


EDIT: pretty much same as one of the suggestions above
thumb.gif
 
Quote:
Originally Posted by Unicr0nhunter View Post

That's the same type adapter as the Phobya one linked in the OP except it's only 2 Amps instead of 5 Amps.

A D5 vario up to speed 4 will draw 2 Amps or under but on speed 5 will draw closer to 3 amps. I've used a 12v molex adapter almost identical to that 2 Amp coolerguys one (This one, to be exact) for a D5 Vario on speed setting 3 or 4 just for filling and bleeding on several different occasions. I really can't imagine the Phobya one not being able to do the same since it's the same thing except even more higher power rated. That said, I wouldn't use either adapter or one like it as a long term / permanent power supply for the pump because in my experience they don't tend to have a very long lifespan when used continuously like that.

If I was going to go with an external pump I'd just make up my own PSU cable from the computer's power supply, or even just an extension cable, and route it outside the case to the pump just the same as you are going to have to do with the tubing. It would look tidier than an external power supply and you wouldn't have to worry about it not providing adequate power for just a pump.
Where do you get 3 amps from? All my Varios stay under 2 amps even at very high flow rates. At normal loop flow rates they are closer to 1.5A

The only pumps I know of that draw 3A is the pmp500 or Iwaki's
 
Quote:
Originally Posted by Jakusonfire View Post

Where do you get 3 amps from? All my Varios stay under 2 amps even at very high flow rates. At normal loop flow rates they are closer to 1.5A

The only pumps I know of that draw 3A is the pmp500 or Iwaki's
From Martin ...





You are correct though at 12v for any normal flow rate the D5 will stay around 2 amps max.

My experience with those small adapters though is you really don't want to max them out especially for long periods. Even running one well below its full capacity I've had one get really hot and die after just a few days continuous use.
 
Quote:
Originally Posted by Unicr0nhunter View Post

From Martin ...



You are correct though at 12v for any normal flow rate the D5 will stay around 2 amps max.

My experience with those small adapters though is you really don't want to max them out especially for long periods. Even running one well below its full capacity I've had one get really hot and die after just a few days continuous use.
That's the beauty of their price. if one dies it's not even $10 for another one
thumb.gif
 
Quote:
Originally Posted by XanderTheGoober View Post

That's the beauty of their price. if one dies it's not even $10 for another one
thumb.gif
Naaaa, if you really did need to go with an external power source you'd be way better off just getting a small power supply for just about the same price that can handle running continuously for much longer periods. Something like ...

http://smile.amazon.com/Logisys-240-Pin-Beauty-Supply-PS480D-BK/dp/B008MUDGBA/

That said, I'd just run a cable from the computer's power supply out to the pump. There's really no need to have an additional external power source for it.
 
Quote:
Originally Posted by Unicr0nhunter View Post

Naaaa, if you really did need to go with an external power source you'd be way better off just getting a small power supply for just about the same price that can handle running continuously for much longer periods. Something like ...

http://smile.amazon.com/Logisys-240-Pin-Beauty-Supply-PS480D-BK/dp/B008MUDGBA/

That said, I'd just run a cable from the computer's power supply out to the pump. There's really no need to have an additional external power source for it.
As long as you are only running 1 molex device off of it. Anything further and it may catch fire XD
 
Quote:
Originally Posted by XanderTheGoober View Post

As long as you are only running 1 molex device off of it. Anything further and it may catch fire XD
That's exactly my worry with using this type of power supply for anything but just a few minutes use at a time.



They nave very poor heat dissipation which is why they tend to get really hot if you put any sort of load on them for an extended period. Catching fire should be a real concern.

On the other hand, that little PSU I linked in my previous post will go for years running 24/7 even running a small complete system on it much less just a pump.
 
Quote:
Originally Posted by Unicr0nhunter View Post

That's exactly my worry with using this type of power supply for anything but just a few minutes use at a time.



They nave very poor heat dissipation which is why they tend to get really hot if you put any sort of load on them for an extended period. Catching fire should be a real concern.

On the other hand, that little PSU I linked in my previous post will go for years running 24/7 even running a small complete system on it much less just a pump.
Point well said and I see where you're coming from. I still have a cooler master 700W psu laying around i could dig up to use if need be
smile.gif
 
Discussion starter · #19 ·
Wait should I actually be worried about the external psu catching fire? I'd rather not go into details but the external psu is a necessity for this project and I'd rather have something more discreet than a full size one.
 
Quote:
Originally Posted by lirtle View Post

Wait should I actually be worried about the external psu catching fire? I'd rather not go into details but the external psu is a necessity for this project and I'd rather have something more discreet than a full size one.
Catching fire is an extreme scenario but i can imagine it does get hot. Care to elaborate on this project of yours?

If it worries you that much you might be able to crack open the plastic case of that cheapo stand alone molex power supply and put a fan on it. Not sure how well this would work or if it would work for your project...
 
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