Small Bench DC Power Supplies - Review and How To (Constant Current vs. Constant Voltage)

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Published 2021-02-01

Here I am reviewing and showing basic usage of the Longwei and Kungber bench variable power supplies. Especially the difference between constant current and voltage and how to adjust them.

SAFETY POINT: I forgot to mention - always disconnect the power supply from any load when turning it on and off, and when adjusting voltage and current!

Affiliate links:
Kungber - amzn.to/3sHcoax
Longwei - amzn.to/3lYQdd1

Please post if you have any questions or comments!

All Comments (21)

@goosewalkhero 2 years ago

Thank you for not having a 12 minute intro.
@Funjaunts 2 months ago

At last someone who gives clear detailed instructions on how to use a PSU. Ive watched loads of videos but your is by far the best for a total female beginner. THANKYOU
@ivanrodriguez4236 2 years ago

Thanks man! I got myself a power supply about a year ago similiar to the one on the right except mine's Evetek and it doesn't show wattage, but to this day I had been rocking my brain in figuring out how to display the change in current output on the machine, so I gave up on it supplying current and just focused on voltage. Appreciate the help!
@MrWhtbred94 2 years ago

loved this video, perfect explanation. not too much fluff and an easy way to understand. Thanks man!
@Hahehhwgajshah72726.. 2 years ago

Thank you for a great explanation on setting the power supply up to read voltage and current.
@neverusedutube 1 year ago

Very good tutorial! I cracked up when you perfectly placed the ad segue when the camera mount moved. I like your videos!
@zezeA380 2 years ago

Very helpful video! This is really what people will need if it's the first time they bought themselves a bench power supply
@aaronbinder6903 2 years ago

Thank you so much for this video!! I just bought a cheap power supply and i was just getting ready to send it back because i didn't think it was working. You explained everything so well!! I have been watching videos for the past hour and they all had me confused. Your video got me back on track. Thx again!! Take care!! Aaron
@Dr.Scorpio 1 year ago

I saw videos regarding this power supply. I must say that this is one the BEST video and awesome explanation. Thanks a lot. 💐
@deanodley 11 months ago

Thanks, you have a easy way of explaining things and this helped me understand how to set the CC mode.
@johthor 2 years ago

Very nice tutorial. I have been using the Longwei identical to the one you were demonstrating for some time, but this video actually taught me some things I did not know about the unit. Thank you.
@joshmiller887 5 months ago

This is what I spent all day looking for. Thank you and nice job
@mufeedco 2 years ago

Thank you. I learned something today. Now I can use my power supply correctly.
@BobAg_ 3 years ago

Super helpful. I recently acquired a real "Shenzhen Special" with terrible operating instructions. This was so much clearer!
@Verminator151029 10 months ago

Thank you. Recently got a similar power supply and really had no idea how to use it, so this helped tremendously! Thank you!!
@kekekeernest8920 2 years ago

I had challenge setting the current, thanks for the current adjusting explaination
@paramj4287 2 years ago

Your video is very helpful and easily understood. Thank you.
@JossinJax 3 years ago

This was super helpful, thanks!
@eriku571 3 months ago

Super helpful video for me to learn how to use a bench power Supply that is new to me.
@The_Actual_CarlJr 2 years ago

Clear explanation with good examples, great video.