72W Power Supply Adjustable 3V ~ 24V Variable Universal Switching AC/DC Adapter Minidodoca AC to DC Converter with LED Voltage Display and 16 Tips, for 3V to 24V Household Electronics - 3000mA Max

Super handy. You need to know what you’re doing kind of, make sure you set the voltage right for the appliance before confecting, and make sure you get one that is rated to do the amount of current needed by your appliance. I’ve been using it at my desk at work to replace the bulky bench supplies. Co workers laughed at me, but I prefer to keep clutter to a minimum. But you can use this for anything from old 90s electronics to modern routers or external hard drives. Does the job!

I'm no chemist.. i needed a Dc power supply for my electroplating & cleaningI didn't need 3 displays or bells n whistles.This was a Score.Not only is it exactly what I hoped. Constant, accurate adjustable DC current.It further came with at least a dozen different connectors & adapters.Meaning i can further charge my electric bikes, cordless tools, Bluetooth speakers, And everything else in my house that has a rechargeable battery.So essentially everything.All for one & One was only $18 bucks.Definitely recommend . .Definitely One of my top pics of the year to date.5⭐'z and up high.

Works as is should. Very handy!

The media could not be loaded. Supplies the right voltage, slightly higher than on the. but it's kind of unsteady at certain points. I could only upload one video but around 9 volts. It's all over the place. 12 volts. It's a little unsteady, but in the lower end around 3v or the up around 24 it's fine.Came with a decent number of accessories and the alligator clips make it super useful for what I'm using it for with small electronics projects.Knob the control knob is a little loose. You have to be very gentle to get to a precise voltage and it maxes out at about 75% and has a dead band all the way to fully turning the knob. Just a small quality control thing. But I noticed it.

I'm an astronomer and I want to do some limited astrophotography by putting a camera on the back of a driven telescope. I bought an old Meade DS-2000 114m Newtonian, with an Autostar controller, strictly for this purpose. Back in the day, the DS-2000 was a really good telescope, with a reliable tracking system. The big problem is that it only took 8 AA batteries, with no option for ac, or even a 12v battery pack.I've been doing this for 30+ years now. I bought the telescope, which appeared to be in excellent shape, but untested, from shop Goodwill for $54 delivered. I wasn't disappointed. The scope looks almost unused. But I really don't want to run it using AAA batteries.I bought this Transformer because of the variety of connections, including the double snap fitting, like you'd use on a 9v battery. The battery holder in the telescope is connected by one of these connectors.After getting the Transformer set, I tested it by using the alligator clip connection. It ran the telescope perfectly. This telescope uses 12VDC so I set the Transformer to 12v. The power supply is very solid and steady through the Transformer, which I tested for 40 minutes.The idea of using the snap connection didn't stand the light of day; I realized I'd be running negative to positive, and vise versa, which obviously wouldn't work unless I switched some wiring around. So, I just sacrificed the alligator clips by cutting them off, and soldering them to the wires in the Meade. This left the barrel, which I easily connect to the Transformer wire barrel, to power the telescope.I ran the telescope for almost an hour, watching the voltage readout, and telescope tracking. The voltage remained rock steady and the telescope tracked perfectly for more than 30 minutes, before needing correction (excellent for this telescope).

Ultimately mostly does what I needed it to, which was serve as a variable speed controller for computer fans in a DIY air purifier. The dial is SUPER sensitive, with no detents, markings, or any other way to get consistent, accurate voltages. It also changes voltage over time, I'm going to guess due to resistance variance from heating. Speaking of which, this gets WAY warmer than the basic 12v wall wart it replaced. I'm betting this thing is just a very simple 'dimmer switch' type design with a single variable resistor. I wonder if any power savings I get from running the fans slower is just being dumped here in heat instead.Part of the reason I bought this one specifically was the many included heads, including type-c. I was curious if I could crank this up to 20v with the type-c header and charge my laptop with it. The answer to that was "no." I don't know if that's a problem with this though, I don't know exactly what is required to charge via type-c on my laptop.If you need to set a very specific voltage, or even just have it stay constant if not at an exact value, look elsewhere.

Trust blinking voltage not stable. After 1 min stop working. Tried anything not led light again

second one I bought, good little low current power supply