His teardowns are fascinating and educational. He did a counterfeit iPad charger teardown at http://www.righto.com/2014/05/a-look-inside-ipad-chargers-pricey.html and a counterfeit iPhone charger at http://www.righto.com/2012/03/inside-cheap-phone-charger-and-why-you.html.
It really shows that building a power supply is easy, building one that’s safe and won’t burn your house down or kill you is hard. It’s amazing how much tech and safety they cram in these.
I mean just consider this:
