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Powering a 12v computer fan

Discussion in 'General Electronics Discussion' started by DanR, Oct 21, 2011.

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  1. DanR

    DanR

    6
    0
    Oct 21, 2011
    Hi guys,

    Complete newbie to electronics (But keen to learn)

    I am researching a possible project which requires 2x 140mm case fans (12v) like this one

    Does anyone have any ideas about how to power the fans via the mains (UK)? Ideally, I'd like to build it myself, but i do understand that us newbies shouldn't be playing around with mains electricity.

    Any suggestions are greatly appreciated,

    DR
     
  2. Resqueline

    Resqueline

    2,848
    2
    Jul 31, 2009
    I'd use any of the readily available 5-12V plug-in power supplies, aka wall-wart or adapter.
     
  3. DanR

    DanR

    6
    0
    Oct 21, 2011
    I don't suppose you could post a link to such adapter? (on eBay for example)
     
  4. BobK

    BobK

    7,682
    1,688
    Jan 5, 2010
    What, you don't have a box of about 50 of them you have accumulated over time? :)

    Bob
     
  5. davelectronic

    davelectronic

    1,087
    12
    Dec 13, 2010
    Power for fans

    Hi DanR.
    This is what the other members are referring to, it quick simple and will power your fans at different speeds, but choose a supply of 1 amp or a little more say 1.5 amps, or build a power supply circuit, i am not sure if thats the route you want to take ?
    Any way link below as a reference.
    Dave. :)

    http://www.maplin.co.uk/power/power-supply-adaptors/multi-voltage-power-supplies
     
  6. DanR

    DanR

    6
    0
    Oct 21, 2011
    Just been doing a little more research into it. Because my project needs to be fairly portable, I was thinking of using a small(ish) 12V battery. Something a bit like this.

    My only concern would be how long it would last, and if those kind of batteries are okay with recharging.

    DR
     
  7. davelectronic

    davelectronic

    1,087
    12
    Dec 13, 2010
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