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This power supply adopts a 120mm Sleeve bearing fan branded ‘PowerYear'. It is rated 12V 0.26A. The model number is PY-1225M12S. Current 0.26A at 12V draws 3.1 watts, which is modest but it should move a decent amount of air. Very little technical information exists about this fan but based on some research we are making an educated guess that the fan can peak at around 2,000 rpm at full tilt. Other information online lists the fan at 3,000 rpm, but we believe technically it would be closer to 2,000-2,200 rpm.
As mentioned earlier, this is an Andyson OEM design for Sharkoon, aimed to hit a very specific price point. I was pleasantly surprised to see that they have adopted a Japanese 105C rated capacitor in the primary stage from Nippon Chemi Con. This is from their KMW series rated 400V and 470uF. This is an excellent capacitor we have seen in much more expensive power supplies before.
This supply is an APFC, Half Bridge and LLC Resonant converter design on the primary side with Synchronous Rectification and DC-DC converters to generate the minor rails. It has OVP, OCP, UVP, SCP, OTP and OPP protections. The PCB is double sided and soldering quality is good. On the primary side we have 2x X Caps, 4x Y Caps, 2x CM Chokes and 1x MOV. It is a basic, but effective design, used now for many years.
Overall for the money, the design seems really well thought out, with some quality components in key positions.
