Transformer was destructively analyzed.pic.twitter.com/Gsi9XEkZ5v
When you get $thing from China and it comes with a "5V 2A" PSU that weighs 40 grams, has a single diode rectifier at the input, logic consisting of two transistors, no Y cap, no feedback, and a transformer with a single layer of tape and enamel separating you and AC mains.
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Did you measure its actual output? I've seen EEVBlog measure some and they were abysmal
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Same here today with 5V/1A PSU Its already in the trash with cutted wires.pic.twitter.com/UIHpvkirlw
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At least yours has a bridge rectifier and an IC controller!
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that's the sound of Big Clive saying "oh. oh dear; that's not right."
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It's actually designed for that option. See the 3 AC input terminals? Two go to the rectifier, one goes straight to the output so they can use it when only one diode is mounted, without needing a bridge.
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I think it is a nice example of how *NOT* to build a PSU.
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Bahh... look like you bought just an oversimplification version of this MBP charger...pic.twitter.com/JRscnizvcu
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