USB Chargers

[Jeff Liebermann]

On Tue, 15 Aug 2017 15:41:47 -0400, sam@repairfaq.org (Samuel M.
Goldwasser) wrote:

>Have sent off to be X-rayed. ;-)

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

"Apple iPhone charger teardown: quality in a tiny expensive package"
<http://www.righto.com/2012/05/apple-iphone-charger-teardown-quality.html>

"Tiny, cheap, and dangerous: Inside a (fake) iPhone charger"
<http://www.righto.com/2012/03/inside-cheap-phone-charger-and-why-you.html>

"A dozen USB chargers in the lab: Apple is very good, but not quite
the best"
<http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html>

"Macbook charger teardown: The surprising complexity inside Apple's
power adapter"
<http://www.righto.com/2015/11/macbook-charger-teardown-surprising.html>

Patent: Flextronics Integrated power converters
<https://www.google.com/patents/US7978489>



--
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

 

On Tuesday, August 15, 2017 3:41PM, s...@repairfaq.org (Samuel M.
Goldwasser) wrote:

>Have sent off to be X-rayed. ;-)

I hope they don't lie to you.

 

[Samuel M. Goldwasser]

bruce2bowser@gmail.com writes:

On Tuesday, August 15, 2017 3:41PM, s...@repairfaq.org (Samuel M.
Goldwasser) wrote:

Have sent off to be X-rayed. ;-)

I hope they don't lie to you.

Who?

--
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.

 

12 W charger is $19 delivered. It just arrived and tested very similar
to the one I bought on eBay as "Genuine Apple 12W Charger". Labeling
slightly different, but consistent with acceptable variations. Gold and
silver refer to the USB contacts.

Rated |<--- Volts (V) with Load R of --->|
ID Description Max I | NL 10 5.0 3.3 2.5 2.0 |
------------------------------------------------------------------------------
1 Apple 5W A1265 Gold Pins 1.0 A 5.03 5.01 4.98 -- -- --
2 Apple 5W A1265 Tin Pins 1.0 A 5.01 5.00 4.97 -- -- --
3 Apple 10W A1357 Gold Pins #1 2.0 A 5.06 5.03 4.96 4.94 4.92 --
4 Apple 10W A1357 Gold Pins #2 2.0 A 5.04 4.96 4.95 4.94 4.90 --
5 Apple 12W A1401 Gold Pins 2.4 A 5.11 5.08 5.06 5.03 5.02 4.92
6 Apple 12W A1401 Tin Pins 2.4 A 5.11 5.09 5.07 5.05 4.98 4.97

#5 is from Apple Store, $19, #6 is from eBay, $7.

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

 

[Samuel M. Goldwasser]

makolber@yahoo.com writes:

12 W charger is $19 delivered. It just arrived and tested very similar
to the one I bought on eBay as "Genuine Apple 12W Charger". Labeling
slightly different, but consistent with acceptable variations. Gold and
silver refer to the USB contacts.

Rated |<--- Volts (V) with Load R of --->|
ID Description Max I | NL 10 5.0 3.3 2.5 2.0 |
------------------------------------------------------------------------------
1 Apple 5W A1265 Gold Pins 1.0 A 5.03 5.01 4.98 -- -- --
2 Apple 5W A1265 Tin Pins 1.0 A 5.01 5.00 4.97 -- -- --
3 Apple 10W A1357 Gold Pins #1 2.0 A 5.06 5.03 4.96 4.94 4.92 --
4 Apple 10W A1357 Gold Pins #2 2.0 A 5.04 4.96 4.95 4.94 4.90 --
5 Apple 12W A1401 Gold Pins 2.4 A 5.11 5.08 5.06 5.03 5.02 4.92
6 Apple 12W A1401 Tin Pins 2.4 A 5.11 5.09 5.07 5.05 4.98 4.97

#5 is from Apple Store, $19, #6 is from eBay, $7.

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

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.

 

[Samuel M. Goldwasser]

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

http://repairfaq.cis.upenn.edu/Misc/audiofaq.htm#audipafc1

--
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.

 

[Samuel M. Goldwasser]

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

http://repairfaq.cis.upenn.edu/Misc/audiofaq.htm#audipafc1

--
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.