In the name of science, I introduced three of the worst 12V adapters (from My kingdom for a 12V adapter) to my bandsaw. What I found may shock you. First on the chopping block, the “EH1205”. Wait!

This project is designed to be used with a 12v battery. This voltage is boosted to about 220-250V AC. I am planning to create a capacitor charger out of this. An other goal of the project was to build ...

Maybe I'm describing a unicorn device here but I have a bunch of devices that run off DC-in of various voltages, and take a barrel jack connector for power. They all have their own wall warts but I've ...