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Description: This is a high quality AC to DC 'wall wart' which produces a regulated output of 12VDC at up to 600mA. These are switch mode power supplies which means the output is regulated to 12V (no more 14V outputs!), and the capable output current is much higher (600mA!).

These will power most projects that don't require more than 650mA of current. Center-positive 5.5x2.1mm barrel connector.

Works with 100-240VAC inputs.

Check out our Unregulated Power Supply Tutorial

Note: One of our shipments arrived with labels indicating 500mA. They are mislabeled and are actually 600mA.

Comments 18 comments

  • Is there a way to make this work with as little as 50 VAC input?

  • i gonna lower the voltage on this to 9 volts

  • WARNING!!!!
    You get what you pay for with this supply.
    Out of 12 I ordered, the first 3 have failed! One which left the AC tong still in the Hot side of the wall plug!!!!
    The other one’s have lifted pads,cold solder joints, and solder blobs all over the boards.

  • My arduino gets super hot when using this. Anyone know of a way to cut down on the heat?

    • Actually, it only seems to happen when I am running the arduino on this power supply AND I have the most recent (as of October 2011) Ethernet shield attached.

      • seems like something is wrong with the arduino or the shield. the power supply is probably fine.

  • does this work with the 12v inverter for the el wire

    • In short: yes.
      It is listed as a related product for the EL Inverter, so it should be okay. But we can always check manually:
      ref: http://www.sparkfun.com/products/10469
      From its datasheet…
      The maximum input voltage is 13V and its maximum operating power is 9W. That gives a maximum current draw of 9 / 13 ~= 0.7A (naively, but it’ll do).
      The typical input voltage is 12V and its typical operating power is 5W. That gives a typical current draw of 5 / 12 ~= 0.42A.
      This power supply is rated for up to 0.6A.
      So in typical circumstances it should be fine. In atypical circumstances - think the very short transient current when clicking the EL inverter on - the power supply is asked for more current than it’s rated for.. but usually they can withstand that just fine. Unfortunately there’s no datasheet for this power supply to check that.

  • Mine stopped working after few hours (connected on 230V to an duecimilanove and a nokia color lcd shield, multimeter gives 90 mA). Now it works few seconds before stopping again.

  • Maybe it’s just my multimeter (it is pretty old), but I measured the voltage coming out of one of these at over 16 volts! If you order one, make sure you check its output before plugging it in to your project.

  • Got 3 of those and love them.
    Output voltage is between 12.1 - 12.5V, that’s within 5% of nominal output.

  • Is this power supply UL listed?

    • I sort of doubt it. I took this as a backup power supply to FCC/EMC testing and lets say it’s good it was a backup as it would never, ever pass the conducted test, even without a load. :)

  • Bought this for a mini project at work. Works well, it is regulated, and actually outputs at 12.5V! This might just be the specific one I have…
    If you’re working with components that need 12V, I would recommend not using an LM7812 voltage regulator, but just a diode, capacitor, and inductor to filter what is needed.


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