Power Supply - 80W DC Switching Mode

This is an 80W 3-in-1 (3 output ranges) Switching DC Power Supply. Gives a regulated 0-36VDC @ 2.2A, 80W max output. Takes a 100-240VAC, 50/60Hz input. This is the cream of the crop when it comes to power supplies. Slim profile - why take up a huge footprint out of your small work space?

We've played with many bench power supplies and worked with many suppliers. We found that too many suppliers were cutting things just a bit too close with quality and engineering. These units are high quality and should last for years. This is the power supply that we use in SparkFun production.

  • Extech Part : 382260
  • 3 selectable output ranges: 0 to 16V/0 to 5A; 0 to 27V/0 to 3A; 0 to 36V/0 to 2.2A
  • 4-Digit LED displays
  • Front/Rear output terminals
  • Current limiting
  • Compact, slim tower
  • Lightweight
  • AC power cord with US prongs
  • Banana to alligator test cables

Power Supply - 80W DC Switching Mode Product Help and Resources

How to Power a Project

February 7, 2013

A tutorial to help figure out the power requirements of your project.

Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

3 Electrical Prototyping

Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • cole.christensen / about 5 years ago / 1

    I have owned one of these for 5 years and the adjustment knobs have stopped working in that there is a loose correlation between turning them and getting different values in the direction desired.

    Anybody have any experience fixing this kind of problem?

    Otherwise I quite like it.

  • Matir / about 6 years ago / 1

    Is the output of this device ground-referenced or floating/isolated?

  • TeslaFan / about 12 years ago / 4

    These things are awesome!

    A nice feature is the "Master / Slave" mode. One unit can provide up to 5 amps at 16 volts... but 2 connected together can double that to 10 amps.

    I needed 12 amps at 14 volts... so I chained 3 together in Master / Slave mode. Nice! It works great, you adjust the voltage on the "Master" unit and the slaves follow automatically.

  • Zio / about 9 years ago / 2

    I have heard some bad things about these. Can anyone confirm?


  • KF6WRW / about 11 years ago / 2

    This item looks great.

    I am mostly sure I will be getting one.

    Please add a image of the back of this power supply.

    Also, how loud are these? I have a very expensive HP power supply here that runs a fan all the time.

    I hate it.

    I am hoping that these are better.

  • MrTangent / about 14 years ago / 2

    What's the resolution on the voltage adjustment? (After reading a review on Amazon, I can't tell if it's 0.1V or 0.03V.)
    Is the current display accurate to about 1 mA, even though the limit can't be adjusted that finely?

    • MikeGrusin / about 14 years ago / 1

      The voltage adjustment knob is a rotary encoder with detents. The step size is rather coarse, at approximately 0.1V. I say approximately because the display reflects the actual output of the supply, so one step may be from 4.99V to 5.08V.
      The current displays to the 1mA level. I just tested one and it was accurate to within a few mA, which isn't bad.

  • loner / about 14 years ago / 2

    I don't mean to be a grammar stickler, but the last sentence "This is the power supply that we us in SparkFun production." Instead of "us" would you mean "use"?
    By the way nice selection of products guys.

  • Swift / about 10 years ago / 1

    Just ordered one... hope you are right TeslaFan! ;)

  • neozeo75 / about 10 years ago / 1

    Any sign that this item is back in stock? i've ordered it and waiting for the item for a couple of weeks already...

  • shawnee6d / about 11 years ago / 1

    is there any possibility you might create or adopt/sell a kit for a power supply with digital display for current and voltage someday? I for one would pick one or to up in a hurry!:)

  • Member #31646 / about 12 years ago / 1

    Can anyone comment on the noise level of this supply? I see one comment below about noise being 20 mVpp and virtually no load. That doesn't bode well for higher loads. Is it really that high?

    • dsffasdfdsafadsfasdfadsf / about 11 years ago / 1

      At less then 3 amps no noise at all!

  • kylehotchkiss / about 12 years ago / 1

    $230 at frys:


  • TECH GEEK / about 12 years ago / 1

    Does this come in a SFE red box?

  • PeterDav / about 13 years ago * / 1

    This is a very good supply!
    Pros: Small, current limiting rocks for saving your parts from disaster. Seeing how much current you are drawing as you tinker is great. Push button power enable is nice. I saw about 20mvp-p ripple on the power.
    Cons: As stated already getting to my 250ma limit from 5.100A took a few dozen turns of the knob. Btw, spinning the knob really fast does not seem to help, the fly by wire logic inside this unit seems to have a maximum rate of change.
    Stacked 2 of these - 9v + to - 9v + and have a +- 9v supply with all this unit's bells and whistles. My TL072 based signal generator was only drawing 3 ma from the - supply, and 14 from the + supply. So battery life with this circuit should be great.

    • kmart / about 12 years ago / 1

      Hi, For getting +-9V with two units, how do you connect them together? Is it as simple as connecting the + on one to the - on the other? And wouldn't there then be a risk for damaging them, as they share a common ground (through the power cable)? I am just curious, as I am considering obtaining an another of these, have one, in order to get dual polarity when I need it. br,

  • nibbler / about 14 years ago / 1

    Is the mains input plug just a standard IEC socket, as seen on PCs?

  • aappleby / about 14 years ago / 1

    Good power supply with a few annoyances.
    1. You have to spin the dials a bazillion times to get between the top and bottom of the voltage/current ranges.
    2. It takes a noticeable fraction of a second for the supply to switch from constant-voltage to constant-current mode, so don't rely solely on the current limit to prevent you from blowing things up.

  • Albermega / about 14 years ago / 1

    So, when this is set to voltage, it shows you how much current is being used by your circuit?
    I always have problems with multimeter breaking my circuit when I try to measure the current.

Customer Reviews

5 out of 5

Based on 1 ratings:

Currently viewing all customer reviews.

Simple, good quality, easy to control, compact