AC adapter for DC blower fan?

Discussion in 'General Electronics Chat' started by tomjonesrocks, Aug 28, 2015.

  1. tomjonesrocks

    Thread Starter New Member

    Aug 28, 2015
    2
    0
    I'm trying to power the following fan:
    http://www.amazon.com/gp/product/B001O0DE8K?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

    ...off an A/C outlet. I've read numerous projects where guys have used this fan in this manner but can't find how/what power supply they used. I tried this one first (after cutting to the wires)
    http://www.amazon.com/gp/product/B003TUMDWG?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00

    The fan runs for a second, then stops for a second, runs for a second, stops for a second. And so on and so on.

    Am just not sure what I'm missing or what I'm doing wrong. The adapter seems to have enough power but I don't know why it keeps stopping?

    The fan definitely functions connected to battery; the specs it says Voltage 13.6, Amp Draw 3.1, Fuse Size 4-amp
    http://www.attwoodmarine.com/userfi...2/69465-turboin-linebilgeblowers-instr-ra.pdf

    Any help greatly appreciated, thanks--
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,521
    2,369
    As I believe you were advised in another forum, most likely the adaptor does not like the motor inrush.
    Obtain or make a simple mains adaptor from 3 components, transformer, bridge rect. and capacitor, in fact with a motor you do not need the cap even, now 2 components.
    Max.
     
  3. tomjonesrocks

    Thread Starter New Member

    Aug 28, 2015
    2
    0
    Yes, I'm now becoming educated on the difference between a "switching" and "linear" adapter is between forums. Unfortunately I can't seem to find a "linear" adapter that I can just wire up and have this fan working. Unsure really how to build a solution from a bridge rectifier and capacitor - was hoping just to find an adapter that would work. Easier said than done I guess...

    Will now research what a "mains adaptor" is...lol...thanks.
     
  4. #12

    Expert

    Nov 30, 2010
    16,268
    6,780
    This sounds like a job for a 15 volt transformer rated for 5 amps with a 4 diode bridge and no capacitors.
    Judging by the country you are in, I would say to buy the parts at...

    No country.
    I'm stuck.
     
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