USB ports have quietly turned into the default power outlet for phones, laptops, headphones, and even monitors, but the wattage behind that familiar rectangle is far from uniform. Depending on the ...

If you've bought a new USB-C cable or charger and seen "USB-PD" on the charger's or cable's box, you may have wondered what exactly these letters stood for. The answer is USB Power Delivery, a ...

The modern world runs on USB, also known as Universal Serial Bus. Whether it's the old-school USB-A ports built into hotel lamps or high-powered Thunderbolt powering entire workstations, USB is still ...

The Universal Serial Bus (USB) started out as a data interface, but it didn’t take long before progressing to powering devices. Initially, its maximum output was only 2.5 W; now, it can deliver up to ...

For one-off projects, adding a few integrated circuits to a PCB is not too big of a deal. The price of transistors is extremely low thanks to Moore and his laws, so we’re fairly free to throw chips ...

As USB-C PD becomes more and more common, it’s useful to have a tool that lets you understand exactly what it’s doing—no longer is it limited to just 5 V. This DIY USB-C PD tool, sent in by [ludwin], ...

The answer to the question “what charger should I use for my phone?” used to be simple – the right charger came in the box. That hasn’t been true for a while now, at least not for most phones in most ...