really small arduino power supply

westfw:
Here is the teardown comparison

IPhone Charger Teardown Shows Astounding Miniaturization. | Hackaday

That's a nice article -- the one at Ken Shirriff's blog. I'm far from an Apple fanboi, but they do, in most cases, build very good hardware. I'm now curious what the guts of my LG charger look like. It sure isn't a $30 item.