USB Chargers

Aug 09, 2017 26 Replies

Nice. You might find these articles (from 2012) useful:

"Apple iPhone charger teardown: quality in a tiny expensive package"

"Tiny, cheap, and dangerous: Inside a (fake) iPhone charger"

"A dozen USB chargers in the lab: Apple is very good, but not quite the best"

"Macbook charger teardown: The surprising complexity inside Apple's power adapter"

Patent: Flextronics Integrated power converters

Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

I hope they don't lie to you.

Who? :)

-- sam | Sci.Electronics.Repair FAQ:

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this is useful!!!

can you also record the voltages the supply imposes on the USB D+ and D- pins.

This tells the load how much current it is allowed to take. thanks

mark

I meant to do that. Someday I'll get around to it, though not all of these are still in my posession.

Except for the bogus white Samsung which didn't work at all, they all seemed to be reasonable in charging speed. I suspect that one had incorrect or no programming voltage.

sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

Purchased Original Apple 5 W charger on eBay in sealed box. Very convincing but almost certainly all a fake:

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Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

Purchased a 5 W A1385 on eBay sealed in Apple box. Very convincing but almost certainly fake:

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-- sam | Sci.Electronics.Repair FAQ:

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+Lasers | Sam's Laser FAQ:
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Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

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