Through a lot of expensive and dangerous trial-and-error over multiple centuries -- sometimes resulting in shipwrecks you still can explore today-- humans have pretty ...

RAILWAY AGE, NOVEMBER 2023 ISSUE: Both are essential for a rugged, lasting railway. Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Each month, we examine a technology topic about which ...

A tricky bridge lift was made possible by crane owner Emil Egger in Switzerland using a special ballasting system on its Liebherr LR 11000 crawler crane. It was the first time the V-frame and ...

Fluorescent dimming systems can satisfy visual comfort, and reduce utility costs through daylight harvesting, demand reduction, scheduled dimming, and other strategies. A dimming electronic ballast is ...

The IQ series all-in-one AC/DC emergency ballasts function as primary ballasts that operate lamps at normal power conditions. Eliminating the auxiliary ballast, they sense any power disruption and ...

Electronic ballasts used in fluorescent lighting systems can experience high failure rates, due to the fact that the ballast manufacturer may not have considered all failure mechanisms or provided ...

Resonant-mode topologies offer many benefits over traditional buck, boost, and flyback solutions. These include soft-switching, higher operating frequencies, higher power density, and higher ...