Scientists have built DNA-based nanocircuits that reset with heat, enabling reusable molecular systems for tasks like cargo ...

There are six power banks on my desk right now. On the shelves behind me are a dozen (two dozen?) more. Over the past three years, I’ve tested more than 55 portable battery packs for Engadget — and ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Sarah Witman Sarah Witman is a writer focused on batteries and charging ...

Abstract: Boost converters enhance input-to-output voltage, two power converters: DC-DC and DC-AC. By quickly turning on and off, switch-mode power supplies (SMPS) increase efficiency and lower energy ...