Sometimes, the most unexpected detours lead to the most interesting discoveries. After a brief break, I found myself revisiting latching relays—not just as components, but as puzzles waiting to be ...
In a move that sounds like the wildest of science fiction, DARPA has announced its new Persistent Optical Wireless Energy Relay (POWER) program that plans to use lasers relayed by airborne platforms ...
DARPA selected RTX Corporation, Draper, and BEAM Co to design prototype lop wireless optical power relays. The Persistent Optical Wireless Energy Relay (POWER) program, aimed at revolutionizing energy ...
Some relays will become warm if they remain energized for some time. The circuit shown here will actuate the relay as before but then reduce the ‘hold’ current through the relay coil current by about ...
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