3V - 24V 1.5A 36W Universal Adjustable DC Power Supply Kit AC Adapter Speed Control Volt Display ON Off Switch with Variable 8 Plugs

I'm very happy with this power supply because it is adjustable and I can test it with any different products that I need to test or plug in and just dial in the right voltage it's really cool highly recommend this part

Solid and accurate. I have this semi-perm bundled with a similar sized volt-ammeter to test LV LED (pkg to 5 or 12V), charging packaged "lost brick" items temporarily and other short-term supervised uses. Excellent value and much smaller and useful than a large ultra-regulated knob & button covered box that click-clacks & flashes. Wall (120V) cord a bit short & knob covers wide range so touchy, but not loose and amazingly unvariable voltage (based on external meter) Amps output dependant on draw from whatever it's connected to. Similar products offer less range and price equal or exceeding this AlloverPower unit, longevity unknown but has handled brief shorts and remote interrupt (OV shutoff) well. Plugs are good quality and very helpful. One of honest: Buy this now you need or will soon need project, handiman, hobby or 'where's that pwr brick' (wired to + center) must haves.

I wanted an adapter to control voltage on miniature incandescent bulbs on a model to a very precise voltage (22.5 V) and found this inexpensive power supply which turns out to be precisely controlled to 0.1 V and easy to install, use, and read. Users needing a specific voltage should note that the voltage changes under load (due to basic electronics) but the continuous adjustment makes it easy when the load is connected to slowly dial up to the desired voltage. Surprising bargain for such versatility.

Power supply seems to work fine. The only slightly annoying thing is the adjustment knob is very sensitive and it's a little difficult to dial in the exact voltage.

This has saved me a ton of money texting different electronics. Just plug it in and tune it to whatever wattage you need, and you're good to go

I used this to control the speed of a small DC motor. When trying to make small voltage adjustments, the voltage would change by as much as 1.5v or more. Forget about 0.1v changes, 0.5v changes took some fiddling. It did hold the voltage steady once set.

It’s simple: a 3-24dvc power source. Used it in a generator class for excitation voltage and to troubleshoot an AVR. Also used it in conjunction with dc plugs with pigtails, and the Milwaukee top-off to troubleshoot a large tonnage chiller’s PLC, and power supply board. It’s cheap enough not to get if you find yourself working with VDC control equipment and need to power something that was powered by something that went bad (as a VERY temporary fix to keep temps. in check while you make the more permanent temporary fix), or whatever else you need from 3-24dvc. Very handy to not have it. Solid buy.

Every one needs one of these I have gone to every thrift store you could think of looking for just the right size. I looked on Amazon thinking maybe I could find one but didn’t know what size to look for and I saw this and I wondered if they had the right size I needed so I ordered it and YES It works for all sizes. I never need to buy a cord again.