New posts in Ac Dc

Computer power supplies usually have higher efficiency on 230V than on 115V. Why?

Converting 8V AC to 8V DC - bridge rectifier gets very hot while idling

How do phone chargers have variable input voltage with constant output voltage?

Bridge rectifier: 4 diodes vs. single chip?

Why is this power adapter transformerless?

Can a 50 Hz, 220 VAC transformer work on 40 Hz, 180VAC?

Purpose of capacitor across transformer in AC-DC power supply?

AC-DC Adapter - Output lower than rating and what's this 'cont' output for?

AC adapter: Input power vs Output power

If we could start our electrical grid from scratch with today's technology, which would be the most efficient choice? AC or DC?