Delete comment from: Ken Shirriff's blog
Thanks a lot for the information!
I'm a student in Electrical Engineering, with a particular interest in electronics and telecommunications.
Yesterday I managed to open a cheap $1 charger that I had bought years ago. I couldn't remember the particular reason why I stopped using it, but I certainly didn't want to try it out lest I ruin my electronics in the process. And when I finally opened it... cricket sounds. What is this chip for? why does the transformer have 6 pins instead of 4? and boy did I find the answers in this article.
Thanks to your post I could also understand what made my charger low-quality. And the article about interference on touchscreens! truly illuminating; turns out that was the reason why I stopped using the charger. Of course, back then as a twelve-year-old when I bought it, I would've never come even close to understanding the issue. And I don't really understand it yet; hopefully, I will, one day.
May 14, 2020, 1:21:26 AM
Posted to Apple iPhone charger teardown: quality in a tiny expensive package