It turns out that is not so simple... because most of them are fakes on market even if sold as super original.
Fake adapters
http://forum.xda-developers.com/showthread.php?t=2622889
http://www.youtube.com/watch?v=wi-b9k-0KfE
Andvanced reading
http://www.righto.com/search/label/power%20supply
A dozen USB chargers in the lab
Tiny, cheap, and dangerous: Inside a (fake) iPhone charger
One I've ordered via Groupon.
Seller was some local site buy2: Genuine Samsung Charger, proposal was like on this page - http://www.buy2.co.il/o/7cf4afaf-1671-448c-a655-e8aefd5c9b68
I paid 59 NIS and wet to pickup it from Hertzliya.
When I came to the shop, I told that it looks like fake adapter: letters jumping. At home I've checked idle voltage, it was above 5.3V. So I've opened a case at PayPal (as I paid with them). Time passed, no answer from seller, PayPal returned me my money.
The second I bought from eBay, seller neq-trade from Germany. Listing not more exist after I opened a case for fraud item. ~57 NIS with postal delivery.
Look closely to the following pictures
On second picture you can see wry USB port.
And highlights from first one
SIN insted of S/N
Серийныи > Серийный
произ8одства > производста
сдеЛано > СДЕЛАНО
Waiting for an answer from seller.
UPDATE (2014-07-26)
Seller send another picture of adapters he sell, that are also fakes because of wrong text on them.
UPDATE (2014-08...)
Seller refused to admit that it was fake and I escalated the case to eBay review.
They did full refund on behalf of seller :-)
Now, let's look how original label should look like.
1. From Samsung shop in Netanya's Poleg mall, ignore model difference. Costs ~130 NIS (with cable).
2. From Bug electronics shop. Sells in original Samsung packaging, cost 89 NIS.
Perfect text alignment!
Update (2015-04-25)
One of fake adapters few days ago stopped working.
Let's openup!
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Board connects to mains with this contacts.
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That is already rusty!
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Very simple design. Main components:
Top left - fuse 250V 2A
Caps looks good, holds capacity. Thanks that its rated to 105C, surprised :-)
DB1 - MB6F - diode bridge - tested, good
IC1 - DK112 - controller
IC2 - CDT817C - optocoupler
T1 - Transformator
D1 - RS1M - diode - tested, good
D2 - SS54 - schottky diode - shorted! need to replace, ordered on eBay
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Typical application for DK112 (but 12V 1A power supply).
Some original boards I found on net below.
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| Left - original, Right - fake |
