power supply for a blower

[NeoMoses]

Ok, here's the deal. I just got a blower out of a car heater and want to use it to duct cold air into my case. It is 12V, and I think 10-15 amp. I tried hooking it up to a seperate Power Supply, but no go. I don't think it has enough amps to turn the motor. My power converter for my HP printer will turn it, but at a much lower RPM. I don't know any specs on the HP power converter.

so, I'm looking for a power converter that will take normal 120V AC current and turn it into 12V DC current with at least 10 amps. Any ideas on anything that will do this. As always, I would like to do it as inexpensively as possible.

[Diggrr]

To get full voltage out that seperate power supply, you need to put a 1ohm load on the 5 volt side. Without this, your power supply may put out as little as 9 volts instead of 12. Got a 120 mm fan handy?

[NeoMoses]

I think I can scrounge up an extra fan. Would an 80mm work? I might have a couple 80mm fans laying around, not sure about a 120.

So, would I just plug the fan(s) in to put a load on the 5V, and that would give me more amperage to the blower?

[Diggrr]

Connecting the fans to the 5 volt side would give the psu's full rated power on the 12 volt side. 80's should be okay, you can use them to make sure the psu stays cool.
It won't make it give more amperage than it's rated for, just the full voltage it's rated for. The device pulls it's amps from the supply, the battle is, will the supply stand up to it.

Here's an example.
Power supply 12volts, 5amps
device 1 12volts 50watts.
device 2 12volts 80watts.

Device 1 will run at 12 volts, all day long. The power supply will stay within it's temperature, and power ratings.

Device 2 would pull too many amps from the power supply, overheating it, and causing the psu to fail. permanently.

[Billvill]

That blower motor has way too much draw for what your trying to do ! At full song that motor will draw about 22 amps @ 12-14 volts. I hate to rain on anyones parade but its just a bad idea. I think you would do better to find an AC fan.

Billy

[Diggrr]

I don't know what his psu is rated for, or what the fan is actually rated at. The blower in my truck has a 10 amp fuse (inline), so who knows. That's why I was stressing not to draw more amps than the psu is rated for.

I don't want him to blow it up either.;)

[Hoot]

Look here:

http://www.teamdelta.com/products/prod3.htm

Hoot

[NeoMoses]

much thanks hoot. that looks to be exactly what I asked for.

I think I may have found a solution with the HP power converter. I'm guessing with it, it probably moves 100-150 CFM of air, and is virtually silent. I'm gonna try taking my Delta38 off my HSF and using this blower to duct air directly onto the heatsink. I probably won't get around to it until this weekend, but I'll let you'all know how it turns out.