Part Emergency Communications drill and part informal competition, amateur radio Field Day encourages ham radio operators across the U.S. and Canada to test their equipment and skills.

It is midday on Saturday, and a half-dozen members of WACOM (Washington Amateur Communications), an amateur radio club, are ...

Direct-current (DC) power distribution has been used ever since electric grids were invented, but, for the last century, low-voltage dc has been largely limited to a variety of niche applications such ...

Is high-voltage DC (HVDC) the future of power distribution in data centers? If so, power-supply designers will have to work through a lot of challenges to make it a reality.