Simple Circuit Keeps Process Control Loops In Tune

Spare a moment’s pity for the process engineer, whose job it is to keep industrial automation running no matter what. These poor souls seem to be forever on call, fielding panicked requests t…

Op Amp Contest: This Lighthouse Sculpture Flickers In The Rhythm Of Chaos

Op amps are typically used to build signal processing circuits like amplifiers, integrators and oscillators. Their functionality can be described by mathematical formulas that have a single, well-d…

Surface-Mount Light Breathes Life Into Your Project

If you’ve ever seen those gadgets with the “breathing light” LEDs on them and wondered how to do it, then [DIY GUY Chris] can show you how to design your own surface-mount version…