A pair of alternating flashing LEDs makes an excellent visual alarm. One of the LEDs remains illuminated, so there's little chance the alarm will go undetected, even by a casual glance. Several ...

This circuit is used to simulate the police car lights by alternating flashing strobes seen on British police cars. The IC1a forms a square wave oscillator having adjustable frequency with VR1 to give ...

The ubiquitous LED continues to expand frontiers and applications with a plethora of sizes, colors, and output lumens. Flashing LEDs that incorporate internal electronics for oscillation offer ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO — Heading into Labor Day weekend, ...

Checking a text on your mobile phone while crossing the road might seem harmless, but if you are unaware of the traffic flying by it could have tragic consequences. A QUT study found flashing LED ...