Metro-North’s train service in Connecticut is challenging because of a technological quirk of fate: ours is the only commuter railroad in the U.S. that operates on three modes of power… AC, DC and ...

Forbes contributors publish independent expert analyses and insights. Gaurav Sharma is a London-based analyst who covers energy & ESG. Since the early days of electricity, alternative current or ‘AC’ ...

Batteries aren't one-size-fits-all, and neither is the way they're wired to your house. Here's what you should know about AC- and DC-coupling. When we think about solar panels and batteries, we don't ...

Famously, Nikola Tesla won the War of the Currents in the early days of electrification because his AC system could use transformers to minimize losses for long distance circuits. That was well before ...

Compact 3 kW programmable AC-DC power supplies gain a new wide-range three-phase input variant that widens voltage ...