Test/Review of Simsukian 2A SK22G-0500200Z (Enerpower)

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HKJ's picture
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Joined: 05/24/2011 - 12:23
Posts: 7433
Location: Copenhagen, Denmark
Test/Review of Simsukian 2A SK22G-0500200Z (Enerpower)

Simsukian 2A SK22G-0500200Z (Enerpower)
Official specifications:

  • Input: 100-240V,50/60Hz
  • Output: 5V 2A

I got it from Enerpower
DSC_3736 DSC_3737
DSC_3740 DSC_3741
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  • Power consumption when idle is 0.17 watt
  • Usb port coding is Apple 2.1A

The overload protection kicks in at about 2.3A.
There is no problem supplying 2A for one hour.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
M1: 62,5°C, M2: 49,3°C, M3: 38,5°C, HS1: 64,4°C
M1 must be the rectifier diode.
M1: 48,1°C, HS1: 64,4°C
Here HS1 is the rectifier diode.
M1: 56,1°C, M2: 34,3°C, HS1: 57,9°C
M1: 55,6°C, M2: 36,6°C, HS1: 67,8°C
HS1 must be the transformer.
M1: 63,0°C, HS1: 66,1°C
Both M1 and HS1 must be the transformer.
Noise at 0.5A load is 16mV rms and 420mVpp
Noise at 1A load is 21mV rms and 400mVpp
Noise at 2A load is 25mV rms and 460mVpp
Tear down
I could not pop it open in my vice, but had to cut it open.
Input has a resistor as fuse and their is a inductor between the two mains capacitors.
This design has a safety capacitor, but no opto feedback.
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On the first picture the mains switcher transistor can be seen between the mains capacitors and the transformer.
On the second picture the input resistor is in the green tube and the part with the colored bands is the inductor.
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The blue part is the safety capacitor.
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The black paper is an important part of the safety in this compact charger.
BD1 is the input bridge rectifier, IC1 is the mains switcher controller.
D3 is the rectifier diode.
The coding resistors are placed around the usb connector.
The isolation distance good, but the black paper is needed.
Testing with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.
A good standard charger, there no problems and no smart functions in it.
The charger was supplied by Enerpower for review.
Index of all tested USB power supplies/chargers
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MRsDNF's picture
Last seen: 2 months 4 days ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Thanks HKJ. This would be ideal if it had an Australian adapter.


djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.