KORAD KA3005D - Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade…

Works fine. Its not a precision unit for a lab but for the shop it does the work.

I have a bunch of these and they work absolutely great. One of them has been running 24/7 for probably 2 years now. There are no power spikes if you use the output on/off button, the only way to get a small spike is to cut the mains power while the output is enabled but you're not supposed to do that anyway. I very much prefer these over switch-mode supplies because the output is extremely clean. The voltage and current settings and display are very accurate. I use these all the time and I bought my first one 4 years ago; I have both KA3005D and KA3005P (programmable) models and I've used to software to script one of them for automated testing. I did have an issue at one point where I needed customer support and both Korad and the seller (SRA) have been absolutely great with their support which is really important to me and I would say they went above and beyond. I had originally considered buying a "fancy" bench-top dual supply but decided that for the same money I can get 3 of these and that turned out to be a very good decision. My priority is to never get into a situation where I needed another power supply and not have one. I have 6 of them permanently as part of my work bench and a few more to move around where needed. If for some reason I needed another one I would buy this one again, no question.

Great

This thing feels like I salvaged it from a Soviet Missile Bunker, but in the best possible way. Much nicer than the cheap version out there, very satisfying fit and finish. Interface is a tiny bit clunky but not terrible, and the memory functions are nice. I wish it came with more variety in the leads but it uses standard connectors so it's easy enough to make or buy more.

Great for all sorts of testing of electronic gear. Note that the circuit is electrically noisy, so it's not suitable for powering receivers that will pick up the RFI hash it generates.

There are a lot of cheap junk power supplies on Amazon -- this is not one of them. It's a LINEAR power supply not a switching power supply. The cheap ones are little more than repurposed computer power supplies. The construction quality and controls are like what you'd find on units costing at least twice this amount. The only problem I have with it is there's a voltage spike on the output when you power it on (after it's on the output on/off button is clean though). I would have knocked off a star for that but you'll find much worse in all the cheap switching power supplies, so I leave it at 5 stars for the incredible value. Very glad I bought this unit and I recommend it if you can avoid problems with the power-on spike at the output.

Very easy to use, accurate and reliable. If you look at forums this model comes highly recommended; such a high value product at this price point. Being a linear power supply it's a little wasteful, but I haven't noticed an excessive amount of heat, and while I haven't observed it myself, the waveform is said to have low ripple. If I needed another supply I would buy another without hesitation.

Noisy output but at the very least its consistent across all voltages.only 4 memory banks, not enough.Only 5 amps. Not enough.10A model is overpriced. it should not cost double having exact same thing except bigger transformer.It does not even have PC interface like cheaper counterpart products.Honestly not sure why it cost this much. Maybe brand cost more than a product its self.