Review on 🔌 PEMENOL 60W 6A Adjustable Buck-Boost Voltage Regulator with Cooling Fan: DC to DC Power Supply Module with LCD Display and Solar Charging Support by Dave Wolf

Bought to replace a humming desktop power supply with a large transformer. I didn't really have to replace it, but I love having the workbench back. And this device performs better in terms of performance and accuracy (but check the caveats). Note. If it's _a_ replacement for a desktop power supply, you still need to supply DC power. The powerful 12V DC power adapter gets the job done with ease in most cases. What I liked: * Trimmer potentiometer for voltage and current. Some devices use button presses, which is more "digital", but mostly I'd prefer to turn the knob. I seriously doubt that the device is accurate enough to ensure precise button control. * The trimmer handles are tall and protrude above the faceplate for one finger adjustment. I've never seen these tweaks before and I find them amazing. * Features a standard coaxial DC input in addition to the screw terminals. 5.5mm/2.1mm, for those curious, perfect for my 12V power supplies. * The current limit works fine and the "over current protection" is activated when the current exceeds 6A. The device must be turned off and on again (with the button or the input power) to clear this condition. In this state, the display shows "OCP", which RoboCop fans will surely appreciate. It just (actually) changes the setpoint to 0. This has the following issues, which may or may not be important. , the output voltage jumps approx. 2.5 V above the set value and stabilizes after approx. 200 ms. I believe it has to do with how the voltage is regulated by the PID controller to set the switching duty cycle. (See, ethyl, PID controllers aren't a panacea for all of our problems!). This test was carried out with a 100 ohm (5 V, i.e. 50 mA) resistive load, but without an additional capacitor. Higher loads or a larger canopy can reduce this. I highly recommend adding a mechanical switch instead of using a button to toggle the input voltage on and off. Do something. A short press turns on/off. It's possible the controller was programmed incorrectly.* It's too easy to accidentally press Power when all you really wanted to do was press the Change Display button. If that bothers you, you can omit the small green cover and/or file the switch down a bit so that the button is recessed. All in all a great little device and only needs a built in switch or something with that limitation. I've ordered two more!