They usually need a high-voltage mains transformer and a rectifier to work, but [Hyperspace Pirate] has managed to make a solid-state power supply to power one from a 12 volt battery. Better still ...

Four lemon batteries wired in a series charge a capacitor. When connected to a calculator, the capacitor supplies sufficient voltage and current to power the calculator. Insert a strip of copper and a ...

Turns out, it might just be a single capacitor’s fault. In a YouTube video, [darieee] tells us all about debugging a Xiaomi M365 battery with such a fault – a BQ76930 controller being ...

Switched Capacitor (SC) DC-DC converters are DC-DC switching regulators ... These characteristics are of particular importance in battery-operated Internet of Things (IoT) applications where devices ...