KORAD KD3005D - Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade…

This is a decent bench power supply bought to replace an elderly linear supply that had failed. I haven't tested it to the limits of its stated spec but have now used it a fair bit at lower supply currents, and I am very happy with it. A push button selects output voltage or current limit with a single control to adjust the levels. That's my only quibble: if the control is inactive for a few seconds after adjustment the control is deselected - a little longer would have, for me, been better. On the whole though it is a good PSU.

It was fast delivery and everything works as it should. Plugged into mains and straight away set up voltages and currents i need it for my work and stored them into memory and it performs really well and cooling is quiet as well, but that depends on a load of course.

Can’t explain the reviews you’ll find for this brand. Let me say, this model is NOT loud at all, preforms to spec, has no odor, does not jump values quickly when setting the dial, and is dead simple to use. I wish I didn’t spend 2 weeks reading reviews and comparing models. This os a solid mid-level linear power supply in an Amazon selection of mostly switching power supplies. I use this on RF and microcontroller projects and I’m not seeing any major interference The only con is somebody mustve made a mistake on this power cord. As others have noticed, it’s not a good fit and falls out. I’ve had to tape it on and will be buying a different cord for it. Hopefully its just the cord and not the actual socket that has weird dimensions (depth seems too short) *UPDATE* bought the first power cord I could find, like the ones you use for a PSU, fit perfectly. Something very off about the one that comes with this unit, it’s about 1/4 inch too long, non-standard

I purchased this DC power supply specifically to build a silver refining electrolysis machine to refine old junk silver into .999 pure silver. So far I have refined over 200 oz's of silver with this power supply and have not any issues or problems. I ran this unit non stop for over a week and it worked flawlessly. After a week of use it was still cool to the touch and started right back up on the next batch of silver I refined. The unit arrived very quickly and was very well packaged. The box looked like it just came off the assembly line and right to my door! There are many different power supplies that are available, but I think this is probably the best value for your buck. Some of the feature I like with this power supply: 1. The best feature is that it has a cooling fan at the rear of the supply. This really helps keep internal components cool which is important if you are using it in a warm area with limited cooling. The fan is very quiet and will automatically adjust fan speed depending on the power load. This is one of the main reasons I chose this supply over many others. 2. The unit is easy to operate and comes with a decent instruction manual written in English. 3. The display is bright and easy to read your setting even from a distance. 4. The knobs to adjust the power settings feel good and solid. 5. It has a grounding connection which some other supplies do not have. 6. The unit shipped with alligator clips (3 feet) 7. Heavy duty single channel power supply with continuously adjustable voltage and current. 8. 120/220v selector switch in the back of the unit. If you are in the market for an adjustable DC power supply I highly suggest you give this product a try, you won't be disappointed! I expect that it will last for a very long time as it has proven itself already many times. If you have any questions please feel free to ask!

The KORAD unit I received exhibited great performance, especially against its peers at similar price ranges. The first thing you'll notice when you pull it out of the box is, it's quite heavy. This is a good thing, the transformer inside the unit looks to be of good quality. The second thing you'll notice, if you apply an electronic load drawing the full 5 amps, is the unit will switch to constant current at 5A. The voltage may drop a little bit (few millivolts) but that's no big deal... you shouldn't run bench power supplies at full load anyways. I and a coworker tested the unit with an oscilloscope and a precise, calibrated electronic load. The voltage readout on the unit under load was bang on. The current readout was bang on. And the ripple, at ~30V drawing the full 5 amps, the maximum power for the unit... was 10 millivolts. This is amazing for such a low cost variable power supply. 10 millivolts ripple will allow you to power many high speed electronic systems with it, and it's cheap enough you can have multiple around to provide for various rails. Of course, it is outside the spec of some parts, but if you're developing with those parts, you will have the budget for more expensive gear to fit that spec. All in all, this is a VERY impressive hobbyist bench power supply, and I hope the quality never falls. They can charge double for this device, and it would still be worth it. I'm using it to power the 24v logic of the Teknic Clearpath SC servo system, and it works very well for that purpose.

Not received as mentioned. Received old version. Working ok ok

I found some software on github that works. The storage that comes with it is national instruments LabVIEW but made into an executable. I’ve done a lot of labview for work awhile back. I couldn’t get the step functions working in a way that wasn’t a pain. It work save it. I can’t edit the file easily. It gives me this error so it’ll take you hours to actually make useful step functions. I need this to work for engineering test. I also downloaded the latest NI runtime files. Still didn’t work. So then I found some open source software someone made on github. Please send that guy a coffee if you download it. Works great. Other than the software the power supply is amazing. It is noisey but I work in a lab don’t care. It is heavy also. Very heavy. Nice small size compared to my other power supplies. I just can’t give. A good review when I only bought it for the software use. I don’t have time to write my own code.