DC Power Supply Variable, 0-120V 0-3A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-12003

Nice little trouble shoot tool. Electronic repair on small stuff requires watching how the current flows and limiting the current when a short is encountered. I like it. Wish I had one 30 years ago when I made a living repairing all sorts of devices. Price was excellent and easy to use.

Great psu. Cant quite get full current out most of the time(seems to top out at 2.5A at higher voltage), but for a cheap psu it is great. I find this works well for titanium anodizing, but it is slow on large pieces due to the high surface area to amperage ratio. It is super simple to use. Feels super light, but what can ya expect from a cheap psu.

Summary: This is the 3rd power supply I have bought since 2020. The first two were the same 30V/6A (180W), one blew out, and the other is still working. Wanted a bit more power when charging 12V AGM batteries, so ordered this unit, which is a 30V/10A (300W). Overall, very satisfied with the performance. Use-Cases: In addition to charging 12V AGM batteries, I use this bench top power supply to charge lithium batteries. Have a couple of Milwaukee M18 battery packs that are older, and sometimes drop below the point where the standard charger will recognize it, so after opening the case, I can individually charge the cells. I typically start with this charger, and then finish off the cells with an XTAR lithium battery charger. Sometimes the XTAR stops at 4.0-4.1V, so I use the power supply to drive it to 4.20V when top balancing the pack. Observations: This unit has a robust cooling fan, and when running at high current (above 5A) the fan kicks on. While the added noise might bother some, this is the purpose of the cooling, to keep the power supply within the allowed temperature range, which can lead to long term reliability. This 300W power supply's cooling fan is definitely moving way more air volume than the 180W one. Selecting this one was easy because it was the #1 rated offering in "Lab Power Supplies", with over 1000 ratings/reviews. Recommendation: Last time I researched power supplies was 2021, so I spent an hour looking at a bunch of different options in the $50-200 range. I looked at a couple of dual units, essentially two of these in one, with the ability to parallel or series the output, but decided against those offerings which were in the $150 price range (3x the cost). The same can be done manually (with the requisite knowledge) with two individual units). In general, if you buy a higher rated supply, and run it at half power, it should last longer than a smaller unit running at full power (all the time). Pros: Jesverty is a specialty power supply manufacturer, many with great ratings/reviews; cost is comparable to similar offerings. Cons: None for now. Conclusion: At $50 for a 30/10A (300W) power supply, rating this 5-stars.

I bought this supply to use a bench supply for my electronic projects. I was tired of buying batteries. I did some quick tests on it and it performed quite well. The calculated voltage, current and wattage readings (under a load) were very close to actual measurement. I scoped the outout and it was the corect voltage and no ripple. My test setup: A 44.2 OHM, 2 Watt Resistor, Power Supply, Oscilloscope & Fluke Multimenter. Calculated Results: 9.0 VDC 0.20 Amps 1.8 Watts Measured Results: 9.0 VDC 0.198 Amps 1.782 Watts (Rounding it is exact the same as calculated) Scope: No ripple Being able to be either a current supply or voltage supply (depending load) is a good feature for me. The only reason I gave the product 4 stars versus 5 stars are the controls. The course controls appear too course. The fine controls have too limited range. This make setting the voltage and / or current tedious. For my use, this is not a problem as my power supply voltage will be constant as it supplies power for my projects. I attached some test pictures.

This variable power supply is a game-changer for anyone working with electronics. Its flexibility allows precise voltage and current adjustments to suit various applications. Whether you're a hobbyist, technician, or engineer, its usefulness is undeniable. The intuitive controls make adjustments effortless, ensuring accuracy and reliability. Efficiency is at the heart of its design, minimizing energy waste while delivering stable power output. The sturdy build enhances durability, making it a long-term investment. Overload protection adds an extra layer of safety, preventing damage to your components. Compact yet powerful, it's perfect for any workspace. With consistent performance and user-friendly operation, this power supply is an essential tool for any electronics setup.

Been runing for a few days and it works as expected. like most switch mode supplies ita RF noisy. But for testing stuff and charging batteries it works well.

Great product Easy set up Easy controls Doesn't take up too much real estate on workbench

Ottimo alimentatore, tensione di uscita regolalabile finemente e molto stabile. Ho provato a misurare la tensione prodotta con un volmetro digitale e leggevo la stessa tensione mostrata dal display dell'alimentatore. Utilissimo nello svolgimento del lavoro in laboratorio, oer ora affidabile e bello esteticamente. Il display è sufficientemente grande e leggibile. Importante non è rumoroso, la ventola entra in funzione quando necessario e il rumore è impercettibile. Ritengo più che adeguato il prezzo relativamente alle prestazioni che offre. Ottimo l'utilizzo per alimentare dispositivi elettronici e led. Consigliato

It works well but there's no way to know what current value you've set it to until you short it.

An awesome tool for the money paid. Works well and outputs the desired voltage and current without problems. Extremely happy with this purchase!

Une alimentation très fiable et parfaitement fonctionnelle dans la plupart des utilisations. Par contre en tentant de l'utiliser pour l'étude d'un circuit d'amplification sur un oscilloscope, elle a généré un niveau très élevé d'interférences électromagnétiques dès l'allumage, et ce malgré les précautions prises pour exposer le circuit au minimum.

Works as advertised. Allows to set both Vol and Amp to desired levels. In higher settings the coils will whine but it doesn't affect the operation. Good value for money.