DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord 

I do electronic design for a living, and I normally use expensive equipment that belongs to someone else (can't go wrong with a $2000 HP bench supply). As a backup, I also have a linear Chinese PSU at home that also works well. The power supply is for a side project that does not have any sensitive sensors in it, and runs some motors and heaters on 250W of power. I love the design of this power supply! I like the fact that the voltage knob is multi-turn, which is more sensitive than you would get with a fine/coarse There is only a single turn on the CURRENT knob. Due to the fact that this power supply is not linear, I expected ripple and noise. There was no way I expected 1VP In the photos you can see (1) my hand holding the scope probe while looking at the pretty LED display on the power supply and (2) In general, the 5V/1 and 5USEC/1 divided by (3) is This power supply is 5 Volts/div and 50 ns/div

Nuff said.
If you run motors, charge batteries, and anodize aluminum, you should get this power supply. Whenever you work with electronic components, it is imperative that you know what you are.

Rene Orozco

| Jul 19, 2021

For 10A, the price is good and the size is small and compact. The only thing I like about it is that. Voltage and amp are dialed with smooth knobs (they don't click into discrete values) and are hard to tune into precise values. Turning the knobs also results in a delay in response. I'm not a big fan of the on/off button. It is not possible to see the current limit simply by turning the amp knob unless there is a load connected. If I want to set the current limit before hooking up the load, how do I do it? When the fan comes on, the voltage and amp temporarily drop by 0. This is what I find the most irritating. If the voltage was 16, then the current would be 16 amps. If you multiply by 5, you would get While the fan is running, continue on to step 3 and then back to step When the fan turns off, the fan counts up to 5. In the same vein, adjust the volume. By blowing the hot air inward, instead of sucking it out, the fan increases the air circulation. * NOTE *UPDATE Electronics that consume small amounts of current are not good choices. Using the constant voltage of 3 volts, we see 00 when testing a single LED. I would have seen 00A on the other power supply (the exact mA would have been In article 18A). Also, there are only two places after the decimal in the current resolution I would prefer nine places as opposed to two. In place of 10, use 999A. The overall impression I have is that it is not a very precise tool.

Sierra Gutierrez

| Dec 16, 2020

This is the first item I purchased to assist me with the production of DIY LiFePO4 and Solar Systems. With three digits on the triple digit display, it has 30v /10 specs It seems to be a great value for the lower price. I am not sure if I am getting a bad roll of the It has been suggested in the Amazon Questions & Answers section that you should connect your wires together Here are the answers to the questions Despite my best efforts to avoid it, I believe that might have hurt my unit's function). You should definitely spend a lot of money if you work with LiFePO4 batteries. Had I spent only $15 - I would have saved a lot of money The same 30v/ 10A specs with greater width of the same LONGWEI brand name costs $20 more A finer tuning feature or a different brand with more positive reviews might be more beneficial. I would like to add the following note As soon as I briefly touched wire to a 3, I got a little puff of smoke. After the unit had been switched off, it had a 2V LiFePO4 cell. Once the cover was removed, an inspection revealed that one of the 2 main wires inside the unit had been severed I was soldered poorly (plus I was poorly soldered to start with) When it stops producing voltage or current, it falls into a state of inertia. After using a solder gun to fix the problem, the unit is back to charging the batteries as I type this.

Forest MARSDEN

| Sep 07, 2020

There is no internet connection for me. I run my dwelling on a rather large forklift battery with twelve 2volt cells of industrial size. When I noticed it, it was already dead. It fell behind and fell over and by the time I noticed it, it was already The specific gravity of water is I am thinking of contacting GB Batteries to have a cell shipped in at a cost of about
After hooking up this little unit to the dead cell, I managed to charge it to full within a week with some patience and time. Consequently, I will keep it for future reference when perhaps one or more of the 12 cells seem to be out of balance.

Zayne Bernard

| Oct 10, 2020

Working well, display is accurate, and amplitude can be adjusted independently based on the
The only issue I found is that there is not a direct path to earth on the ground terminal on the front of the machine. If it runs through the circuit board, the transformer, and the power supply ground wire, it is likely to cause the transformer to leak out all its factory smoke. If you send any current greater than one amp to ground, it is likely to cause the transformer to fail. created a bridge wire from a ground terminal directly to the ground terminal of the power source. By doing so, a spontaneous discharge will only blow a fuse and not damage the circuits.

Truett CHAMBERLAIN

| Jan 22, 2021

You can use it for Home or Hobby use. Despite its shortcomings, I gave it a 4 star review mainly because of its An example would be as follows This section pertains to section 4 of chapter 4 Maintaining. The first step is to replace any insurance tubes that have burned out. You should determine the reason for the burnout, the native capacity of the replacement tube and the probability of a backup tube having the same problem as the failed one. My understanding is that this is a picture of installing a new I suspect they used some translation software, and this is what came out of it. There is room for improvement in the manual, and I hope they make some effort to do so. This is a pretty straightforward device, but if you have a need or desire for a manual, I suggest looking into another solution.

Iyla Tran

| Jul 10, 2021

Prior to purchasing this power supply, I had been looking for a bench power supply for a long time. Since I bought another one and returned it because of its low quality and inability to perform as described, I returned it as well. However, it fails to deliver the full 30V at 10A when compared to the first one. My current draw is a tiny bit over 8A at 30V. My favorite feature of the meter is the coarse and fine control knobs that allow me to dial in exactly how much power and current I want. However, the fine dial is almost as sensitive as the coarse dial, because it is extremely touchy. Compact design is a major plus for me, because I need little space on my workbench to accommodate it. Despite being large and easy to read, the display is not overly bright. You will get everything you need to get started right out of the box with this power supply. Heavy loads are not too taxing on the fans, and they are not too noisy. I have found it to be reliable, and it accomplishes its job effectively. Overall, it is a good product that I recommend. A 4 out of 5 star rating from me.

Bryant Green

| Aug 12, 2020