After my DIY article “Build Your Own Headphone Amp” in the May 25 issue, the good folks at Radio World asked me to share the process by which I make printed circuit boards. There are usually two ...

How difficult would it be to build a feed-back circuit that would automatically compensate for colder nights/warmer days, etc.

Having the tools needed to do a job is a powerful thing. Having the tools needed to make more tools for doing cool things is even better, though, and that’s where [Jiří Praus] took things with ...

Deconstruct an inexpensive solar circuit, then repurpose it to engineer a foldable, lightweight solar-powered device that solves a real human problem.

Researchers at Vanderbilt University have come up with a way of building a circuit board that comes apart when you stop heating it.

The physicists say that an energy-harvesting circuit based on graphene could be incorporated into a chip to provide clean, limitless, low-voltage power for small devices and sensors.