The demand for smaller, lighter, and more efficient AC/DC USB power delivery (PD) chargers is always a challenge for power-supply design engineers. Below 100 W, the quasi-resonant flyback is still the ...

A specialized test gadget that tests continuity quantitatively in both AC and DC modes could prove to be an indispensible bench test instrument. This article describes such a continuity test set up, ...

The world's first 800kV UHV converter transformer with 750kV AC-side interconnection has passed all model tests, signifying a great breakthrough in developing key equipment for Lingzhou-Shaoxing ...