Hybrid Breakers Could Make Direct Current Practical in High Power Applications | Research Horizons

Direct current (DC) powers flashlights, smartphones and electric cars, but major power users depend on alternating current (AC), which cycles on and off 60 times per second. Among the reasons: AC is simple to turn off when there’s a problem — known as a fault — such as a tree falling on a power line. Electronics and Nanotechnology Energy and Sustainable Infrastructure Materials