https://www.electronicdesign.com/technologies/power/power-supply/article/21753116/ac-dc-adapters-set-efficiency-benchmark
Described as high-efficiency components, the 50W AD50 and 100W AD100 series ac/dc power adapters specify typical power-conversion efficiencies of 80% and 90%,...
ac dc adapterselectronic designsetefficiencybenchmark