资讯

A new interactive map reveals significant regional variations in 30-year mortgage refinance rates across the United States.
Roadside tests for marijuana impairment that are widely used by police departments across the U.S. are “inadequate,” ...
A novel small-signal model for current-mode control of PWM (pulse width modulation) converters is extended to the analysis of converters with constant on-time control, constant off-time control, and ...
GLOUCESTER, Massachusetts (WBZ) — A boater and a nurse saved three children caught in a current off a beach in Gloucester, Massachusetts authorities said, and all three children are now expected ...
The current source inverter (CSI) is a power electronics topology that allows for the realization of variable speed drives (VSD). Compared to the most common voltage source inverter (VSI), which can ...