Bench Power Supply Testing, Homemade vs. Korad KA3005 vs. LongWei LW-K3010D 

The SMPS based bench supply has a long wei to go.

Thanks for the video. I'm just getting into the hobby and have been on the fence about the Korad power supply you tested, but now have it on my list.

Thank you for sharing your knowledge for us who are still learning what you share would take so long to learn by ourselves.

Great work on the tests!

Best information 👌 on Bench power supply..very helpful 👏

Very good. Learned a lot. Thank you very much.

Very interesting tests. Thank you!

Helpful tests. Thank you!

Great video

great.... we try noise in,,,, noise out tests too

Very nice and interesting advanced-level performance tests you performed on those PS units. At 9:16 I tend to disagree your statement: mid and high-end power supplies (including your Korad one) have the possibility to preset the voltage & current settings and they have an output on/off switch. If you use that built-in switch, it will not overshoot in cc mode. By using your external opamp-mosfet switch, you compromised the performance you were expecting for. I know for sure because I tried both ways with my TTi PL-601 unit and saw the difference.

Excellent video very easy on the ear, many thanks. Can you tell me the video you did and the mod to stop the on switch spike and where to fit output capacitor for prevention. I have a 30v 10A similar PS and blew mosfet when setting amperage my fault voltage and amps were to high when I shorted the leads. Thanks again.

Not surprised the Home Made one (capitals intended) exceeded both of them by a few miles.

A good example of "horses for courses" - All power supplies are not born equal. If you are playing with low noise op amp circuits, build yourself a linear dual rail supply. If you are building a 500W fairground lighting controller , go with a smps!

Is not it possible to build a circuit that when current limiter reach's Max set current it shortens the output capacitor ( with "output enable/disable discharging" switch )?

Are you the guy that made a better impedance analyzer for the analog discovery?

Great video. Can you share the schematic for the diy power supply? Thanks

Very informative. I have the same long wei supply and it is indeed very slow in regulating current. I did blow some fuses due to this supply 🙄

Any video in your channel to show how to make homemade psu?

so actually it is better to build our own power supply than buying cheap ones on AliExpress? (or pay 6000 $ for Rodhe and Schwarz)

Seeing this my old idea comes to mind: How about switchable capacitors for the output? One low value, one high value. Depending on what you do with it, you can choose between them. I've seen one guy who straight away exchanged the 300ish μF cap on his power supply for a 47μF one, if I recall correctly. (I am kind of binge watching lab psu stuff the recent days)

My Korad had famous crash issue even with the updated boards. I'm done with this Chinese junk. From now on, on keep on saving money to buy Rohde & Schwartz or similar high end equipment. Granted you can buy a complete lab with Owon or Siglent stuff for the price of just a Rohde & Schwartz power supply, but at least you don't have to worry about the equipment failing or, even worse, destroying anything hooked up to it. Chinese just can't designing anything decent.