Two nitrogen liquifiers, used for redundancy, are installed to support the superconducting fault current limiters. As electric transmission networks become more interconnected and more power ...

Turning on a power source into a highly capacitive load can wreak havoc on circuit elements and protection devices. Foldback current limiting allows circuit elements to withstand transient currents ...

Brushless dc motors have the advantages of high reliability and smaller size, but the absence of brushes can pose challenges. One challenge is the requirement for electronic commutation and control, ...

A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both ...