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

This is a very nice and not terribly expensive single output power supply. I have yet to use it extensively, but ran it through its paces the other night and found the features worked pretty much as expected. I especially like the programable memories, so I can set it up for different applications, and just tap the memory button and be ready to go. The over voltage and over current protections work well, as do the constant current and voltage functions. I do find the fine adjust a little odd, but that seems par for the course with these supplies. Finally, the ability to switch off the output and adjust the voltage and current with the output off is quite nice. FWIW, I've been doing electronics as a hobby and profession for pushing 50 years now.

Man this thing is awesome. The knobs are nice. The functionality is very intuitive and easy to configure and its so fun to use. No complaints from me as this unit is just to awesome to pass up. Weight is what you would expect for a linear power supply. But who cares about weight. It works abd it works well.

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.

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.

According to Amazon I purchased this 10 years ago. I'm surprised they are still selling the same model. It's worked well for me. The current limit works as well as the voltage limit. The current limit can be adjusted in 1mA steps. The voltage limit can be adjusted in 10mV steps. I haven't noticed any appreciable spikes on activation of the output. The jog knob works well. The connections are solid. The on/off button is solid. The rubbery push buttons feel good enough. Once you get used to how the controls work it's relatively fast to adjust. I'm not seeing much noise either. It's actually quieter than any of my USB batteries that all seem to spit out some noise in the 450kHz range.

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

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.

I'd been using it as a backup when I had to send in my Rigol DP832 for a failed control board.I used this unit for almost the entirety of a quick turnaround project, and it never did anything unexpected. No weird pulsing on on/off at the outputs, so that appears to have been fixed. Power button felt/feels solid, but the transformer still has a bit of inrush buzz on startup.I left it running for 4 hours at max power to see if anything odd happened. Not a peep.I thought I'd be giving it to a colleague when I got my DP832 back, but this PSU's small size and performance means it'll be going into the mobile toolbox instead :P