NICE-POWER DC Power Supply Variable, 30V 5A Adjustable Switching Regulated Power Supply with Encoder, Upgraded 3-Digits LED Display, Mini Regulated DC Bench Power Supply

I was hesitant to buy a cheaper bench power supply, but the huge pile of glowing reviews swayed me. I am quite happy with it. Works perfectly. Only issue I had was with very low voltage - I can't get a stable output under about 0.9V.Had to whip up a little voltage divider circuit to generate 300mV and 600mV stable for oscilloscope calibration but it was able to handle the rest of the cal range up to 17V without a problem. Comes with a decent set of output cables - banana jack with alligator clips.Wish all my equipment had this awesome blacked-out finish - I love it - looks great.

I needed a constant-current power supply for something I was working on, but wasn't sure how much use I would get out of one afterwards. Not wanting to spend a lot of money, I came across this supply that not only has the constant current capability I needed at the time but also a constant voltage function as well. This is the perfect size to sit with the rest of my bench equipment and looks right at home sitting on top of my bench DMMs.While the functionality of the unit is as advertised, I did have to knock off 1 star. That is for the standard IEC power inlet on the back. I at first thought I had a DOA supply but found that some IEC power cables are very loose in the socket on this supply, thus not making a good connection. I can work around it, so not a reason for me to return the supply.

My first round of testing has me quite impressed for the price. I will update my review later if something changes, but it appears that this will work well for low voltage tinkering (arduinos, pis, etc).My initial voltage readings by range:0.0v - 0.7v: Pretty spotty. Voltage was mostly correct, but would waver up and down a LOT. I wouldn't use it for anything below 0.7v (not sure this would ever come up anyway).0.7v - 3.3v: Good, but a little off, within 1% - 2% of expected voltage. Should be perfectly fine unless you need very exact voltage for some reason (and if you do, don't buy a $30 bench power supply).3.3v+: Spot on, usually exactly on the voltage or very, very close.

I bought this DC power supply to replace 9 volt batteries that I was using for a DIY Iontophoresis machine. It works great for my needs and It's going to save me time and money on 9 volt battery daisy chaining and purchasing.

Good build quality

Decent, basic benchtop power-supply. A bit quirky to use, but pretty self-explanatory after messing with it for a few moments. Noisy fan, but keeping the works cool is more important than making it quiet. A good replacement for it's deceased predecessor (mice got into it!)

Not the cleanest output, but it's compact and functional. I bought this as a secondary supply to use along with a fancier one. In that capacity I highly recommend it. Great for powering digital rails and the like.One quirk I've noticed that's slightly annoying: The display shows 3 digits, but the user interface actually has 4. You can tell, because when you have no digit selected and rotate the knob 10 times, the 1st decimal place increments. My OCD now requires me to turn the knob back and forth after every adjustment to find that threshold, so that the hidden digit is 0.

Used as a voltage supply for several applications as well as for component testing. Supply was never on for more than an hour in any given day and used maybe 30 days total over six months. Unit fuse blew when operating well within spec limits (providing roughly 5V at about 4A when the fuse blew).Replaced fuse with the provided spare. On next power-on there was an arcing / shorting sound within the unit. Fuse did not blow and digital readout panel was active, but unit no longer supplied voltage.