Cheapest Amazon Power Supply DOESN'T SUCK!
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- Опубліковано 5 сер 2024
- Reviewing the cheapest lab power supply on Amazon and I was totally surprised!
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Amazon Canada (the one shown here) : amzn.to/3cBiuAp
Buys on Amazon US (slightly different model- same guts I'm told): amzn.to/3dw90Ya
Similar options amzn.to/305MSQr
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Description: UNIROI DC Bench Power Supply, 0-30V/0-5A Available Power Supply with 3-Digit LED Display, Adjustable Power Supply Alligator Clip Leads (Banana Plug and Spade Lugs), Input Power Cord
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#ELECTRONICS #LAB #REPAIR
0:00 Intro
0:15 In the Box
1:36 Functional Test
2:12 Internals & Disassembly
4:44 Output Power Quality - Наука та технологія
Do you have a favorite power supply or lab tool?
I'm thinking about buying this, given the price point. I've also been looking for a linear PS, and the KORAD KA3005D has come up several places and looks nice, with a good set of features. $113 on Amazon US>
@@glenntrewitt - I have a Tenma 72-10495 (similar to the KORAD KA3005D, just a dual unit). Very heavy, works great for what I use it for.
Some review and tips of the KORAD unit - www.eevblog.com/forum/testgear/220v-lab-power-supply-on-110v-mains-korad-ka3005d/
The dual unit is a little more expensive, not much - uk.farnell.com/tenma/72-10495/power-supply-2ch-30v-5a-adjustable/dp/2251947
My favourite power supply is the minleaf k3010d
I’ve just bought a wanptek PowerSupply 0-30v, 0-6a. It’s very nice and cheap for charging lithium battery and revive dead batteries.
Thanks for the video.
Greetings from Saudi Arabia.
I know it's kind of off topic but do anybody know of a good website to stream new series online ?
Great video! Super informative and straight to the point!
I completely forgot... Thanks for the excellent review!
This one - UC305 - is available from Amazon in the US - $50.
Agree, I have a Kungber and use it in the garage for odd DIY projects.
Just ordered (another) one 2 days ago, this video would have been very helpful. Markets are flooded with cheap and potentially dangerous pieces of electronics which makes a decision extremely difficult if you don't really have much experience!
I got a hold of a lightly used Tacklife MDC01 for about $60 (50 plus 10 for s/h), when the new price is around $100. Has 4 digits & has an output button. Thanks
Thank you! I just ordered it for 60CAD :)
Appear to be a couple of different manufactures of this, and I noticed some use a different board which is not as good as this one. I have the Winptek which uses the same blue board as yours, although I have seen some that come with the inferior green one. Maybe what they have in the parts bin at the time !
Are you able to set the max amps before connecting it to a load?
I have an EVENTEK 30V/10A DC power supply I bought from Amazon for around $50. It seems to be a pretty good one.
It's already not available. How much did it cost?
Thanks for this review. As it happens, I have been looking at bench power supplies and it's difficult to chose between the cheap ones. I hadn't looked too closely at the pictures of the inside of the units before, but this model seems a lot tidier inside than the others in the price range.
Hello, can you tell me the numbers that put on the 7-pin chip (on the board marked as U2) that is next to the diode bridge and above the yellow filtering capacitor? That is, there are two large capacitors, then a diode bridge and then a capacitor yellow filtering that has an 7-legged chip on top, well that's it. It is that my power supply, which is exactly like yours, same make and model, has burned that chip and I cannot see its number to repair it, I would appreciate your collaboration.
All the best.
Have you tried dialing the supply to something like 5v and power cycling it a few times while attached to the scope? Many of these cheap supplies have bad power-on spikes.
I have the exact same power supply and I did just that. You're right, it does have a very slight power-on spike besides the ripple. I was testing it on 4.0v while charging a li-po cell. V regulation is surprisingly accurate tho, but being only a single digit fraction, the resolution is limited on the display. I hooked up my scope and used it to measure the voltage with 3 digit fractions instead. Surprisingly good power supply, especially for the price. In fact it's better than many of the ones I can buy here locally for more than twice the price.
Just ordered one. I see there is no output enable button. So the outputs are live whenever it’s powered on? That seems kinda weird but we will see.
This is in reference to an older video.Do you still fly paramotors? Where did you get your paratoys wing? Please help...thanks in advance.
Blackhawk paramotor. No I sold it some time back I'm afraid
Can u explain clearly for this product iwonna get more information for this product please help
I have one very much like it. I dont like the fact that you switch between volts OR amps reading.
I stupidly destroyed a hand held oscilloscope that was being powered by my bench power supply.
I forgot it was in amp mode and kept turning the knob looking for 5 volts. little did I know I was turning the voltage up to 30 volts. My nose let me know I did something wrong.
Darn....that's definitely learning the hard way! Hopefully it was only one of the $20 chinese cheapies?
Looking for a simular item liked and subbed
"Uniroi" hmmmm... What else do they make? Thanks for a good review. 🤓
I always thought constant current was the current the device would be shoving through. Like if c.c is set to 10 amps then ten amps would be shoved through whether the device liked it or not
Google Ohms law ;)
Absolutely not, the current setting is where you want the power supply to fold back the voltage once that amount of current is reach or drawn with the device under test. Once say your amperage setting is reached the power supply basically self protects itself and your device by turning down the voltage which immediately makes current drop so you don't destroy your device under test.
@@kevinmccool3719 hmm guess I learned it wrong from afrotechmods
@@MkmeOrg for what exactly
study ohms law and why "Loads" draw a certain amount of current depending on the supply voltage.
Just ordered mine can’t wait to charge my bank of yinlong
Good luck with these...
It us a real piece if crap....they do not hold up...defective out if the box on two out if five.
You get what you pay for, cheap smps made in China, most of them are garbage and dangerous, full of ripple and voltage spikes, glitchy controls and fold back circuits unreliable.
Can you recommend a better one?
I found one for 40$ lol