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USB Detect Voltage Current
Long press (mute) button for 5 seconds to enter the engineering mode, you can access the device (cell phone) via USB, observe the device input voltage and current changes
Intelligent cooling fan
The Bench power supply is equipped with an intelligent cooling fan. When the DC power supply reaches a certain temperature, the fan will automatically turn on to dissipate heat, greatly improving the life of the product.
HD 4-digit display, status light.
The HD 4-digit LED display allows the screen to be seen clearly even in poor lighting conditions. All the working status of the lab power supply is shown in the indicator on the left side of the screen.
Mute function
The default state of variable DC power on is to turn the knob and press the button all with sound. If you like a quiet working environment, you can press the mute button to switch the mute mode.
Peter O.
Reviewed in the United States on September 9, 2024
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Kyle
Reviewed in the United States on September 27, 2024
This DC power supply is a fantastic addition to my electronics workbench. The adjustable voltage and current output make it incredibly versatile for a wide range of applications. The encoder knobs for coarse and fine adjustments provide precise control over the output. I appreciate the inclusion of both USB and Type-C quick-charge interfaces, adding to its convenience. It's a well-designed and reliable power supply that has become an essential tool in my lab.
Vanessa Palumbo
Reviewed in the United States on September 20, 2024
Overall, this is a pretty decent variable DC power supply. Voltage is adjustable down to the 100th of a volt, while amperage is adjustable down to the 1000th of an amp. You can also use this to get readings on USB-C and USB-A devices (as pictured) and charge them if desired. There is also an over current protection that can be turned on and off as needed.In terms of adjustments, voltage and amperage knobs can also be pressed to change which digit is being adjusted. This way you don't need to spin endlessly to go from one extreme to the other.For accuracy, I brought out my multimeter to see what it read versus what the device claimed to output in terms of voltage. At lower voltages it's very close to the displayed number. But as the voltage increased the disparity did as well. The highest discrepancy pictured is a difference of 0.21 volts. This isn't necessarily a problem depending on your use case, but it certainly might be for certain applications. I do not have a way to measure amperage at this time and was unable to gather accuracy data in that area.
Timothy Lyons
Reviewed in the United States on September 18, 2024
The feature set is nice with both a power button and an output on/off button. The programming is the usual way where the voltage or current button is pressed and the knob rotated for each of the digits in the set value. The OCP (over current protection) is nice to have on an inexpensive unit. The cables are slightly cheesy and unlikely to carry 10A without some loss; I didn't test that but its a minor issue.An added feature of the USB fast charging is convenient and helpful for measuring power draw from USB devices.Overall, its a keeper.
CatDad
Reviewed in the United States on September 15, 2024
My husband has a friend with a retail shop who occasionally asks him to bench test audio and video equipment. More times than not the equipment has no power cord or includes a damaged power cord. This power supply allows him to dial in the precise voltage and amperage so that the equipment can be properly tested. So far he has had nothing negative to say about this power supply. He has also used the USB and USB-C ports for charging various items.I have heard him comment that this power supply is a nice addition to his work bench and that he appreciates all of the functions and capabilities of this unit. I am certain that he would recommended this power supply made by Diaiary.
Adam
Reviewed in the United States on September 13, 2024
I was surprised at how well this performs for this price. I used a multimeter to check every 10V, and the voltage was always within .02V, which is plenty accurate for at home projects, whether you're powering LEDs or a microcontroller. I also tested the current with a 24V LED strip, and the current displayed was within .03A that was measured on my meter. The USB ports are a good touch too. They are not for fast charging, but will power most small peripherals without a problem. Overall I've found that it works great, and you won't be disappointed.
Jason
Reviewed in the United States on November 8, 2024
For the modest requirements of a hobbyist, this is a really great bench power supply. Voltage and current are easily adjusted with separate encoders. Displays are large and easily readable. Voltage is accurate within a few hundredths, according to my (cheap) multimeter. Has convenient front facing USB-A and USB-C ports. Features aside, space is at a premium here, and the whole thing is pretty compact. Everything I need for powering small circuits and messing with microcontrollers. Very satisfied!
Brian Hankerson
Reviewed in the United States on October 19, 2024
Not rocket science. User friendly. Puts out specified parameters. Well built. I got no complaints.
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