Ever wondered why Apple’s iPhone charger costs $29?
Kevin Shirriff wanted to find out, so he disassembled iPhone’s charger and has provided some interesting information about it.
He explains on his blog what makes Apple’s iPhone charger special:
Apple’s power adapter is clearly a high-quality power supply designed to produce carefully filtered power. Apple has obviously gone to extra effort to reduce EMI interference, probably to keep the charger from interfering with the touchscreen. When I opened the charger up, I expected to find a standard design, but I’ve compared the charger to the Samsung charger and several other high-quality industry designs,and Apple goes beyond these designs in several ways. [..]
[..] Apple’s design provides extra safety in a few ways that were discussed earlier: the super-strong AC prongs, and the complex over-temperature / over-voltage shutdown circuit. Apple’s isolation distance between primary and secondary appears to go beyond the regulations.
He goes on to conclude:
Apple’s iPhone charger crams a lot of technology into a small space. Apple went to extra effort to provide higher quality and safety than other name-brand chargers, but this quality comes at a high cost.
If you found this interesting, then we would strongly recommend you to head over to Kevin’s Shirrif’s blog to read the complete teardown analysis.
It is great to see Apple taking so much care in designing the iPhone charger.