help with electrical fans

[cruising]

I want to run 2 fans off the 110 electrical outlet,can anyone tell me what kind of voltage reducer I need ?

Voltage / Ampere / Size: DC 12V 0.21A, 60x60x15mm
Part Number: 2406KL-04W-B50, T10

Thank you

 

[bereanracer]

I used an old wall wart from some random piece of electronics I had laying around (an old cordless phone I think, or a modem or something) that had enough of a current rating to support the load. On my canopy I'm running two .15A, 12V fans with a .8A, 7.5V wall wart. The lower voltage reduces the fan speed a little to reduce the noise and lower some of the cooling effect (similar to how the fans on my ATI fixture inside the canopy works).

 

[fishgate]

voltage reducer? You need an AC to DC converter. You could just find an old 12 volt DC power supply. I used one from an old external modem. Or you can buy a new one. They sell them pretty much everywhere that sells this kind of stuff.

 

[cruising]

Thanks guys,but I'm rebuilding an old unit and it came with the led drivers that work fine;and the unit has a small box that takes the electricity from the outlet and it runs the fans.Unfortunately the small box has absolutely no writing on it.I really don't need any more wires outside the unit.

 

[Utah Fatman]

Are you converting from 110 to 12 VDC? I just did this. Like everyone above said you need to lower the voltage and convert from AC to DC. I used a cell phone charger and plug it into a wall outlet. If you are not wanting an exterior cord I would find a 110 circuit inside the unit that is switches and run an outlet inside the housing to plug the cell charger into, then wire tie it down.

 

[uncleof6]

Cell phone chargers, or wall warts, are not appropriate for continuous use to run motors, and in case of an accidental overload, have no circuit protection. 12v power supplies are so cheap, that there is little point to use inappropriate chargers to run your fans. Plus you will not have to mess with cutting the wires, splicing, etc.

http://www.jab-tech.com/12v-DC-Power-Supply-with-Single-Molex-Connector-pr-3776.html

 

[bereanracer]

Thanks guys,but I'm rebuilding an old unit and it came with the led drivers that work fine;and the unit has a small box that takes the electricity from the outlet and it runs the fans.Unfortunately the small box has absolutely no writing on it.I really don't need any more wires outside the unit.

This http://www.radioshack.com/product/index.jsp?productId=2103732&filterName=Type&filterValue=Transformers is likely what you're looking for then.

 

[fishgate]

Also get a cheap multi-meter (sears $12) and check to see what voltage is going into the light.

 

[NanoReefWanabe]

Cell phone chargers, or wall warts, are not appropriate for continuous use to run motors, and in case of an accidental overload, have no circuit protection. 12v power supplies are so cheap, that there is little point to use inappropriate chargers to run your fans. Plus you will not have to mess with cutting the wires, splicing, etc.

http://www.jab-tech.com/12v-DC-Power-Supply-with-Single-Molex-Connector-pr-3776.html

can you locate 2 of these in 24V?

 

[US27inKS]

I used the power supply off an old monitor. 12V 3A output. Works perfect.

 

[BerriersReef]

http://www.youtube.com/watch?v=KkBVOOx1gqM&feature=channel_video_title
Skip to about 5:13, I show how to wire up a computer fan to a 12V adapter.

 

[cruising]

Thanks again all

working on it.