SHNITPWR AC Adapter 120W Universal Power Adapter 4V 5V 6V 9V 12V 15V 18V 19V 20V 24V Adjustable Switching Power Supply 100V~240V AC to DC 4V ~ 24V 5A Converter with 14 Tips & Polarity Converter

I rarely write reviews. I am making an exception for this product. I bought a used Brother QL-820NWB Label printer that I knew ahead of time was missing the power adapter. I went on Amazon and ordered T POWER Ac Dc Adapter Charger for Brother QL-810W QL820 QL820NWB. When the printer and adapter were delivered the barrel connector on the adapter did not fit the printer. I was definitely upset because the Amazon ad specifically stated that the adapter would work. I didn't want to take a chance for another mistake from a vendor and decided to go with this universal adapter that has a variable voltage. The Shnitpwr AC/DC Adapter is a godsend. My printer required 24 volts and 3.6 amps. The rating for this adapter is 3v to 24volts and max amps of 5. I am happy to know that I now own a power adapter that can easily be used for many devices that I own no matter their power requirements.

Needed a power supply for a new telescope and did not want to risk one of those cheaper ones blowing out the circuit board. I have bought many power supplies over the years and this appears to be the best so far. It has some heft to it and my multimeter showed the output voltage matches the supplies readout. That feature alone, viewing your output, is pretty unique. If I end up selling the scope someday I will be keeping this.

I collect and restore lots of old vintage laptops. This thing really is a life saver, for that. It's seemingly inevitable that I will get a machine that does not come with the original power supply, and sometimes they can be hard to come by. Between this supply and an additional set of tips, you should be pretty much set. 5A output should be enough for most applications, and the reverse polarity cable is a handy addition. I've used this to great success across multiple different era's and vendors, everything from Compaq to Gateway to Sony. Even made a little DIN-7 cable to use with my Apple IIc, and it works a treat. Highly recommended, saves lots of hassle, and money!

I'm going to say this first so people see it immediately the small extension they give you with it that looks like it's just to make the cord longer is a reverse polarity adapter don't find out the hard way like some people have. That being said this otherwise is an amazing unit I wish they would put a sticker or something on that adapter to warn people as it is not marked at all. The fact that you can adjust it to any voltage within its range is fantastic for working on small electronics like I do. The plugs that come with it cover a substantial amount of different Electronics. It would also be nice if they added a small expansion set for the few odd ball barrels they don't cover I would even buy it separately. I highly recommend this unit it has saved me a lot of hassle. Another cool thing is that it has a connector with just two wire lead spots to do positive and negative bare wire coming out of it I've used that quite often it's very handy.

I was very excited to get this DC power supply, which I wanted to use to run a G gauge model train. The measured output voltage seemed perfect, but after running one train engine that consumes about 25 watts of power for about 45 seconds, the transformer stopped putting out a consistent voltage. At first, I worried that I may have damaged my model train, but a new transformer that I ordered after I returned this one worked flawlessly. As for this one, it was clearly defective and fortunately broke right away rather than after the return window closed.

Need this for testing numerous tablets & notebooks I don't have working power supplies for. It works very well for the 3 I've tried this far. All different connectors and voltage requirements. The connectors seem well made & fit well. Especially love the polarity reversing cable as several I have use the negative center rather than the more standard positive center.

As a retired Engineer I have countless small electronic devices and gizmo's that most of which have a (sick) custom power brick and plug. Powering and charging them all while finding outlets for the equally countless chargers takes up lots of time and space. If only there was a better way. Enter this device (and ones like it). Supplied with a generous amount of different tips (and a polarity changer, +universal bare wire block!), simply select the correct tip, dial in the needed voltage and PRESTO - you can ether use (for low power devices) and/or charge your device! I keep one at home and one in the RV (it replaces countless "wall warts"). While NO it won't power and charge your high power consuming device at the same time (after all it is only "up to 120W") it is decently compact device with variable voltage output in a decent package at a decent price point. Highly Recommended.

The SHNITPWR Power Supply model SNT-0324-120 is ok for the size and prize. Included are several adapters including USB (micro and type-C). It can be used to power several electronic devices or for testing. The power supply output is within 0.2-0.3 VDC and that was not really a deal breaker. For me the deal breaker was the fluctuations at the output after turning the power supply off. The manufacturer advertises that the power supply was designed with safety protections and contains a quality microchip. The fluctuations could have been prevented by isolating the output from possible discharging components. I made a video showing the fluctuations in my YouTube channel “Abuelito Can Fix It” (Grandpa can fix it).

Really great power supply. Not as stable as a bench power supply, but it's a 1/3rd the cost and stable enough for pretty much all consumer electronics. Just don't try to power sensitive industrial or scientific equipment with it, and you'll be fine. Comes with a wide array of barrel jack tips, plus USB-C and micro USB (nice!). There was even a tip for an old and obscure NEC Handheld PC (NEC Mobile Pro 900) I have from the early 2000s. Best tip is the screw terminal tip: if you need a tip that's not included, you can source your own and can connect it to the screw terminal. Really great product, I was using those cruddy wallwart style ones before, but this is much nicer. There are screw hole mounts to secure it to a test bench or your wall. Dialing in your required voltage is a snap, and the 8 segment display is bright and easy to read. Has three significant digits. One oversight is a voltage lock button, so that you can lock it in in case the PSU gets bumped and the voltage knob moves. That could be disaster! I'll keep an eye out for an updated model, maybe they'll include that feature.

AC Adapter is easy to use, just dial desired voltage, choose appropriate device compatible tip, that's it. Well made, quality workmanship.

This is being used to supply power to electric curtain window DC motors, which have an operating range of 12 to 24 volts (increasing voltage makes the curtains open or close faster, as the motor rpm goes up). Contrary to other reviews, I do not find the voltage adjusting knob to be too easy to turn - it seem to have just the right amount of resistance to stay in the intended position. (Perhaps this was a fault of earlier models?) Also as others have said, the indicated voltage display stays on for a few seconds after power is cut, as capacitors bleed off. This is normal and nothing to be concerned about. Installation was fast, as the directions are easy to follow. I gave this product 4 stars, instead of 5, only because it has been in service a short while. Hopefully, it will perform flawlessly for years to come. Cheers!

lost the cable for my monitor and this works perfectly to replace it.

Tried on a USB-C laptop - it fried two of the USB-C ports on the laptop. Tried on other devices - it only works with low powered devices, such as 5V micro USB power bank. Tried on few different laptops, it did not work on any of them. The voltage dial is very sensitive, difficult to get it exactly at the right voltage. Also, when device is plugged in and drawing power, the voltage on dial changes...it's not fully stable like it should be.