Tiny, cheap, and dangerous: Inside an iPhone charger. Ken writes -
I opened up a cheap phone charger and examine how the circuit works. In the process, I find that the manufacturer cut a lot of safety corners, and it’s nowhere near US safety standards. There’s a reason that name-brand chargers cost a bit more.
Since you reverse-engineered the protocol for Apple chargers, you will probably be interested in reference #15 from my article… which documents the resistances used by Sony and Apple chargers – their values are
very close to the ones you found.
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