🔌 PEMENOL 15W DC-DC Adjustable USB Power Supply Module - Convert Voltage from 5V to 3.3V, 9V, 12V, 24V, 30V - Step Up/Down Module with CVCC Buck Boost and Shell Review

This is a great adjustable power supply. I carry this USB device in my tool bag wherever I go. Now that I'm working on TTL circuits, alarm systems, computer systems, and my Raspberry Pi collection (too many), I have the power I need. I like the 0.5 to 30V range. I've used 0.5 to 12V with no problems and the output is clean. I haven't used the 30v option yet. The power supply is clean and once you install it, it consistently outputs the desired voltage. Due to the large number of connections, I…

I've found this unit to be ideal for my regular testing of electronics in various voltage ranges. Easy to use by plugging it into any 5V USB outlet, then setting your desired voltage and turning on, and the current limit is an absolute bonus. My favorites are pressure fittings for positive and negative output voltage for quick and easy connection. If that's not the best option, then the additional USB output certainly doubles as another option for quick plug and play. From time to time a…

I originally bought the blue non-fast charge version which worked great. I saw some additions to the red version and I should have had them. You can use it as a passthrough device and see how many amps the device draws from USB alone, which is pretty cool. 4 ways to eat! Plug it directly into a USB port anywhere, disconnect from Micro-USB or USB-c, or even solder wires to a +/- USB connector. Just such a cool thing for small electronic projects. I wanted to drop the voltage on a small 12 volt…

Generally good physical build quality. The output voltage adjustment knobs are smooth and precise. Comfortable to hold, not dangling. I checked the output voltage with a multimeter and it does what it's supposed to. My only complaint, however, is the quick-release clamps for the exit. They are too small and bulky. If you have something that fits, it doesn't seem very secure. If you have something like the cigarette lighter adapter I was planning to use, it might just have wires too big to even…

I am continually amazed by the practical and inexpensive electronics available to electronics enthusiasts (and in my case, school teachers). I plan to use this in my high school electronics class. The circuit board and acrylic sheets are professionally made and all smaller than a deck of cards. The 4-13V input can be connected via standard USB, micro USB, USB-C or custom cable pads. Output voltage and current are adjusted with very handy brass knobs on multi-turn potentiometers - no need to…

This is a very solid device with a large display for old eyes like mine. The open case design means you have to be a little more careful with it. The device has three inputs including USB, Micro USB and USB-C, which should cover most voltage sources, which is nice. The output comes from a set of terminal screws. There are only two buttons, one for power/trigger and one for mode, I like simple ones. The two settings are a constant voltage, which is like a detent potentiometer but isn't, and a…

This review is for a red box, 4-13V input, 1-30V output as shown in the photos which should accompany this review. I bought this block to be part of my electronics toolbox as it looked like a very handy little block. After using it for a few days, I'm really amazed at what this little power supply can do! The device arrived on time and well packaged. There were no instructions in the box, but the seller provided a PDF download link in the product description. To be honest the device is so well…