In October 1984 I arrived at Oxford University, trailing a large steamer trunk containing a couple of changes of clothing and about five dozen textbooks. I had a freshly minted bachelor’s degree in ...

Abstract: The main objectives in driving multiple LED strings include achieving uniform current control and high-performance pulse width modulation (PWM) dimming for all strings. This study proposes a ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

It's rare these days for an artist to ask for fewer microphones, but after warming up in our space, Billy Strings did just that. Surrounded by his band, the bluegrass virtuoso brings back the spirit ...

Michigan bluegrass phenom Billy Strings and his band stopped by NPR’s Tiny Desk for a performance more than a decade in the making. Backed by his band — Alex Hargreaves on fiddle, backing vocalist ...

Abstract: A flicker-free single switch multi-string LED driver with high power factor and current balancing is proposed and analyzed. It combines a pre-stage boost PFC converter and multiple ...