I understand people want to make money with their products but these guys have crossed the line into social irresponsibility. After reading your post, I became suspicious that it could be a counterfeit one because it had a plastic ground pin and the text on its body became unreadable after several years of usage. The iPad charger seems to be he same, and that is logical as the plug can be exchanged, but the iPhone charger looks like a standard EU-plug, just a bit longer. It is just to the left of Roosevelt's chin on the dime. Three of the four wires connect in the lower left, and the fourth in the lower right. As discussed earlier, the secondary winding is plain copper wire, not triple-insulated wire, which is a significant safety flaw. The article discusses how capacitive touchscreen ICs need to sense pico-Coulombs of charge, which is very difficult when AC noise is present. For more on running power supplies at Hz, see this article.
- iPad charger teardown inside Apple's charger and a risky phony
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He keeps talking bout the so called 'flyback' transformer', yet both circuit examples use standard high frequency transformers - not flyback types.
The DC voltage is approximately sqrt 2 times the AC voltage, since the diode charges the capacitor to the peak of the AC signal. The counterfeit also doesn't use the more expensive split, multi-stranded windings that the genuine charger uses.
The led on the connector does not light up at all. Surprisingly I didn't find the control IC in it.
The "T3" diodes are fast switching diodes datasheet. Splitting the primary winding into two layers is more expensive, but results in a better transformer due to better coupling of the magnetic fields.
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The led on the connector does not light up at all. If the voltage spike manages to kill the AC adaptor as well, that's not so bad.
Video: Real apple charger Tips To Identify Fake VS Genuine Lightning Cable for iPhone, iPad Counterfeit or Duplicate Lightni
It controls the switching frequency and length of time the power is switched on, with different behavior under no load, low load, and high load, as well as constant monitoring for faults. Especially given that power supplies and conditioners themselves actually have a finite service life.
But with the iPhone 5 I experienced the issue with touchscreen interference. I wonder if supplying a power to iPhone from any Mac has any difference comparing to wall chargers? The component in the protection circuit that looks like a transistor is a BAV70 dual high-speed switching diode datasheet.