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DC to AC 50hz 12vdc to 12vac

Discussion in 'General Electronics Discussion' started by cjdelphi, Nov 21, 2015.

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  1. cjdelphi

    cjdelphi

    1,161
    108
    Oct 26, 2011
    I came across a water pump which requires AC, i only have DC not even an old transformer i could remove the bridge rectifier from...

    All the circuits i find invert and step up.. how fussy can a 2 wire 12vac 1.5w motor be?
     
  2. Brandon1293

    Brandon1293

    4
    0
    Nov 21, 2015
    Many AC motors' RPMs are dependent on the number of hertz. Without knowing more about the motor I'd have to suggest feeding it AC. You should be able to adapt an inverter circuit by making the transformer closer to 1:1 so as not to step up. You might be able to remove the transformer altogether.
    I'm thinking the the motor would 'prefer' a pure sine wave, if you can.
    Hope this helps.
     
  3. cjdelphi

    cjdelphi

    1,161
    108
    Oct 26, 2011
    Problem solved, found an old toroidal transformer!

    But still... im curious for a circuit
     
  4. cjdelphi

    cjdelphi

    1,161
    108
    Oct 26, 2011
    Ahhh ok a pure sine yeah easier to stick with the transformer :) thanks!
     
  5. GPG

    GPG

    452
    66
    Sep 18, 2015
    1.5W? you could drive it with an audio amp Seems small for an AC motor. Pic?
     
  6. cjdelphi

    cjdelphi

    1,161
    108
    Oct 26, 2011
    It's a 12v water pump... and when i move it i'll take photos but right now the toroidal transformer works great!
     
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