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110V Input Voltage
Luckyrao Mini DC Power Supply
this one is compact and portable, saving space. we have added practical functions such as output switch control and button locking. We used a better circuit board. This variable DC power supply is a very stable and adjustable DC power supply. It has the characteristics of low ripple, low noise, high accuracy, high reliability, and perfect overvoltage/overcurrent/over temperature/short circuit protection, making it particularly suitable for laboratories, schools, and electronic maintenance.
Luckyrao Mini DC Power Supply
Output Control Switch
The green light output state is turned on, and the red light output state is turned off. By pressing the output button, the required voltage and current can be adjusted without actual output power, making this DC power supply safer and more convenient.
lock function
All panel operations can be locked with just one click to prevent harm caused by misoperation
5V 2A charging port
Equipped with 5V 2A charging port which can quick charge your devices
richard hofecker
2025-09-04 13:59:08
no issues so far
C.S.
2025-07-16 09:15:46
I really like this power supply, it is simple and is very highly adjustable from 0.01V to 32.00V. The voltage is very stable, it only moves by 0.001V when I watched it for a while on my Fluke multimeter.The constant current mode works great, but it is a mode I rarely use. I haven't fully checked the 5A output yet, but I have run it up to 2A and it handled it fine.I like how this power supply has two power switches, one in the back for main power (turns on display and adjustments) and then the front button to switch the output on and off. This allows me to flip it on and make voltage or current adjustments before switching on the output to avoid damaging whatever I have it hooked to.The voltage is adjustable in increments of 0.01V and current in increments of 0.001A. If you press the knob while adjusting it moves over a decimal point so you can quickly adjust by any increment you want.Overall this is a great benchtop power supply I would recommend to anyone who do electronics work with various voltages!
William J. Jehle
2025-06-16 17:17:41
Did you know that 3.8Vdc is ideal for powering a 1MHz crystal oscillator? Neither did I until, thanks to this really handy desktop power supply, I was able to prove it. I have only scratched the surface of what this thing is capable of doing and I'm left wondering how in the world I ever got by without it. I've wasted hours on trying just any old thing to power my experiments. Sometimes having the right tool for the job is really worth it for the saved time and frustration from using the wrong one.This unit comes with probes (banana jack on one end, alligator clips on the other), power cord, and some instructions that I will eventually read.I recently saw a YouTube video that used this same power supply. You could see some noise from the switched power supply design on the o-scope, but that's certainly not a huge concern for research and design work.I highly recommend this!
Theodore L.
2025-01-03 12:12:50
I’ve been using this to test accessories for my 3-D printer. Because my printer runs 24 V it is good to have an adjustable DC power supply to measure the amperage of poles to make sure it will not overload my main power supply when I add it on. It works well and keeps a good constant voltage And the capping feature for amperage is a nice touch
christopher.robot
2024-12-31 12:33:17
This bench PSU is pretty good for a 'general purpose" bench supply in a garage or hobby setting (not suitable for lab use, IMHO).I haven't had a chance to do any extensive testing - checking for things like overshoot, ripple, regulation, etc.. My suspicion is that it won't be the greatest - it's a purely switch-mode supply, rectifying mains to DC and then switching it down to the set voltage.The USB-A ouput is a separate daughterboard, and not part of the main supply, so be careful if you're expecting that to drive high currents or match any quality performance of the parent supply.Overall construction is good, seeming well thought out and well laid out, quite a bit better than some of the "use up whatever parts we've got lying around" constructions I've seen from import supplies in the past... Oh, and if yours arrives looking like the screen is scratched to heck - there *is* a protective film on there - carefully peel at the corner and you'll be greeted with a fresh, shiny surface for you to scratch up all on your own. =]I don't know what part of the construction creates a hard-limit of 5A, or if it's just lazy firmware - as 5A@60V is 300W, so 10A@30V should be perfectly possible, but the 5A limit is across the entire output range. Still, it doesn't make promises it can't keep - and I run it at a full 5A frequently, even at 60V.It seems like it would lend itself really well to hacks and mods - an RPi zero W with some kind of app or desktop control would be pretty easy to implement, based on the 'supply & controller' divorced construction. That and some more filtering and I'd wager you could call this thing a "lab supply".I gave it four stars based on construction and performance. Were it at a lower pricepoint it would have gotten five. Maybe if my testing shows exceptional performance I'll come back and add a fifth star. For now, I feel like four is fair.Have fun!
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