Review on 🔌 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 by Jimmy Koroye

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 constant current potentiometer. The instruction manual was a link on the Revain site and is written in plain, easy-to-understand English, which is a refreshing change. When the device is switched on, the display shows a strange character set when booting, then it calms down. show tension. As usual, I ran some error tests by shorting the output wires and waiting for a spark, but there was none. 15 watts but it generated 18 watts before turning off the unit, again no blue smoke. When testing QC2.0/QC3.0 charging, you must remember that the power supply and what you are powering must both support QC2.0/QC3.0. QC2.0 devices can be charged with the QC03 charger but will not benefit from the QC3.0 power ramp. This device was able to automatically identify my RAVPower 20 amp 18 watt battery pack as a QC3.0 device, which I use to charge my phone and tablet. I had to assemble a USB-C cable to connect to the device's screw terminals, but I'm the creator and that's what I do. This device charged my RAVPower battery three times better than the standard 5V charger and about the same time as the 18W PD charger that came with the RAVPower battery. as a boost (boost) converter. Plug in and set any standard power adapter or battery. Using a 5VDC battery for input and setting the device to 5VDC I was able to get an output of 2.8 amps. If I then increased the voltage to 30 VDC I was limited to just under 2 amps. The oscilloscope at the output of the device showed some ripple with a DC battery and more ripple with a switching power supply, this is normal. The voltage of the device is within 0.05 volts compared to the reference stand power supply. After operating the device with a 10W load for 4 hours, it felt slightly warm, but still within 0.3 VDC of the set value. x 1.0" x 0.5" or 63.5mm x 25.4mm x 12.7mm for my metric friends. I've only been playing with the device for a few days, I'll update this review once I get a chance to work on it a bit. Geek Must Have