Sure you could go buy a USB charger off the shelf, but what fun would that be? Try making one yourself with a little help from a 9V battery and a few extra components. This simple hack on a standard ...

This is a simple circuit diagram of 9V battery charger circuit using SCR and LM311. This is a simple circuit diagram of 9V battery charger circuit using SCR and LM311. The principle behind the circuit ...

Posts from this topic will be added to your daily email digest and your homepage feed. The best charger when you’re trapped in a gas station during the apocalypse The best charger when you’re trapped ...

Google has a new 67W charger for the Pixel 10 Pro XL, but many older plugs charge the phone in essentially the same length of ...

When you’re spending the day with family you probably haven’t seen in a year, nothing is more vital to keeping your sanity than your smartphone. And to ensure it’s got enough charge to keep you busy ...

Alongside its new iPhone 17 lineup, Apple casually launched what looks like a world’s first charger to support USB PD 3.2 AVS ...

If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from ...