Home LAB for Students equipment PT 2

With everyone having to stay at home and this includes many students, I thought it may be useful to review and suggest some economical instruments to make up a home lab for electronics engineers and hobbyists
In this second video we will look at a KAIWEETS 30V 10A Power Supply. In par 1 we looked at a very capable multimeter. • Home Electronics Lab f...
The power supply performed as expected with the exception of slight inaccuracy at the lower current range, here is a link to buy one for yourself is so desired. these are affiliate links, you will not pay extra but I will get a small commission to help the channel
Amazon USA amzn.to/3nyFaYE
Amazon CA amzn.to/30NsL9z
I would like to thank KAIWEETS for sending me the meter and PSU at no charge to help with this video series.

[@leos9865]

Thanks. Being retired I'm trying to learn electronics . This is just what I need.

[@TheBreadboardca]

well the fun is just beginning, I will be going through many projects, updating some old ones and creating more arduino / raspberry pi beginner videos. Always with something useful as the topic

[@HamedAdefuwa]

With my kids, they always adjust the dials and mess things up lol

[@TheBreadboardca]

I will be investigating alternatives and or a mod to this unit, stay tuned

[@MGee1]

I'm just getting started and have an okay multimeter (Brymen) and was considering a bench supply made from a couple of old HP server PSUs in series to give 24v (for charging my RC LiPo's) by floating the ground on one of the supplies. Is there an easy way to get a half decent variable supply from these or will the switching supply make it just too noisy to be of any use for electronics work?
I've seen a few videos using off the shelf (ebay etc) integrated digital units but I'm not sure I'd trust them to be safe in short situations etc...
Then i've also watched all of the Dave Jones 'building a lab supply videos' which lost me about pt4....so I'm kinda stumped.
ANy suggestions appreciated. Many thanks

[@TheBreadboardca]

OK, a few things
1. The Brymen is as far as I know, a good multimeter and is the hardware behind the EEVBlog multimeters too.
2. If you look at most electronics in the modern day, there almost ALL using a switching power supply in one way or an other (If the USB / Wall wart is light weight, then its a switching supply), so provided adequate filtering is added where you have very sensitive circuits like precision ADC/DAC then you should be fine.
3. Many new power supplies and some older Agilent ones had a switching back end followed by a linear final stage, this keeps the heat dissipation down when your outputting low volts but high current, the other method was to have multiple taps on the transformer and the PSU would select different taps depending on the demanded voltage output. You could use a similar trick to put your PSU's in parallel for lower volts but more current, then in series for more volts but less current :).
4. I to have a series of videos on a bench power supply, if you have not watched them yet, perhaps they will give you a different perspective and also fill in gaps in your knowledge.
czcams.com/video/KGn5noes66Q/video.html , there are over 32 videos, a series on specifically building a PSU and then many more on associated topics like current sensing set.