DC Power Supply Variable, (0-30V 0-10A) Adjustable Switching Regulated Power Supply，USB Quick-Charge，4 Digits Accurate Display，Laboratory Testing Maintenance Aging DIY Power Supply

It is small and works It has some shortcomings, first and foremost the instruction book is As well as listing all the knobs with the wrong identifier numbers, they describe how to use the control knobs. It is terrible how they translate into English. Then there is the issue of the wire leads There is a problem with the cord with alligator clips as the plug is not securely connected to the wire. Although it works initially, it is clear that it will loosen over time and make intermittent contact. The problem can be resolved by appropriate soldering. There is a plastic sleeve over the probe that must be removed in order for the leads with probes to be used otherwise, the screw-on plug must be removed and the lead can be used. The sleeve is slid directly over the brass threaded terminal with the nuts tightened. Having this conversation is a very stupid idea. It would have been possible to resolve these issues with some lateral thinking, and at no additional.

Yusuf MORLEY

| May 20, 2021

The first thing you should know- DON'T FORGET TO SWITCH FROM 220 VOLTS TO 120 VOLTS NEAR THE MAIN POWER INSERT CONNECTOR you will only get about 6 amps when running 120 volts and leaving the switch on 220 volts. There will be no damage to the unit (at least not on mine), but the power will be half of what it should be. * B/R/X Review The power supply was not expected to be of much value since it came from China and wasn't very expensive. But when I opened the packaging, I was surprised at the package's contents, which included a set of meter leads and 1) Power supply with 32VDC and 6Amps. It worked very well, I like the blue display, it is easy to read and clear. For both voltage and amps, the controls are smooth and easy to set, with coarse and fine adjustments. A calibrated Fluke 289 and a large 28V 250 watt light bulb were used to conduct the test. In the end, I was satisfied with the results, the numbers were very close, if not exactly correct based on Fluke was a little out of whack, but on average all of the data I couldn't be happier with this little power supply and was able to almost double my power at almost half the weight and bench space for a lot less money. The unit I have is excellent. While I received a gift of this power supply, I would not hesitate to purchase it with my own money. Due to the small size and lightweight of this unit, I will probably buy another one for my small avionics shop. Thank you for supply. I'm very pleased with it.

Indie Church

| Oct 24, 2020

My sail boat projects have been a breeze with this little unit. Because I need to be flexible with respect to voltage supply at ports visited, the size (small) and dual voltage were undoubtedly factors in my decision to make the purchase. Stowing the foam packing in a safe way when not in use was important to me. A shunt was calibrated in the first instance. Everything worked as expected.

Catalina Fleming

| Mar 25, 2021

Verified that the voltage on the device was correct. The cord was plugged in and the device was turned Voltmeter registered no voltage even though the lights were on. I turned on the fan. As I was doing some research to see if something was wrong, sparks came flying out of the back fan and it made an awful sound. I nearly dropped the computer. Obviously, it must have been unplugged Out of the box, the product is clearly defective.

Juliana Gill

| Nov 15, 2020

A friend and I bought one, we liked it, so we bought another. The coarse and fine voltage adjustment knobs could be made more precise, and could have a pointer so you know where the knob is in relation to the range. I was surprised to see the power readout, which is a nice touch.

Avery McBride

| May 06, 2021

The book is very good and highly recommended.

Kinley Petty

| Jul 10, 2021

I have been an EE for 36 years, so I have a lot of bench power supplies at home and at work. Despite not being a pass for work use, I would find this power supply quite satisfactory for hobby use on my bench. It has a small footprint and is a good price point, with so few limitations. The power supply was tested against a Fluke multimeter worth $500. I have included some pictures to show you what is good and what is bad about it. Basically, my Good, Bad, and Ugly Review

The Good 1) Small size, light weight, and a decent LCD (a little too bright)
2) Accuracy is not bad for a power supply at this price. 3) Wattage information on your display, so you don't have to do 4) The supply is priced at $60 for a 300W supply, making it a nice Bad - 1) You can see in the photos that the second least significant digit on the reading is not accurate, it is close, but not as good as I would have liked. 2) The wattage readings do not exactly match the voltage readings or current interesting thing is that if I use the real readings of volts and amps from my Fluke Meter that Wattage is extremely accurate. So strangely enough, Wattage is the most accurate reading I can get. I will now reveal what I believe to be the ugly 1) This is probably the reason I almost reduced the star rating by one. It is very slow to switch power sources on inside. Turning up the Voltage or Current should be done with extreme care because the unit ramps up and down slowly and can easily overshoot the voltage or current you want. A fine adjustment has poor results and is accompanied by a significant lag as well

Conclusion I was very impressed with this bench supply. It's a great bench supply for the casual hobbyist and works within an acceptable accuracy range for most homebrewing projects. BTW, when you turn the voltage up to Max, the fan begins to run. No load was applied during the factory test for the Fan, so I guess that was what it was.

Nala Valdez

| Sep 11, 2020