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500 ευρω κανει το traco με το φπα
και αλλοι την κραζουνεI don't understand why Mean Well, in their infinite wisdom, decided to go the server-style vertical-mounted fan with this power supply. Sticking the fan vertically in the back means that you have only limited space, meaning they had to go with a 60mm fan. If they had placed it horizontally on the top like with their other units, they could have gone with a 120mm fan instead.
Simple physics: airflow is proportional to both propeller size and speed. Sound, on the other hand, is proportional to (mostly) speed only. A smaller fan has to spin faster than a larger fan to move the same amount of air, but will generate exponentially more noise. This is one heck of a loud fan.
That said, it does put out the promised power and dose so fairly cleanly with little spikes and aberrations (as viewed on the oscilloscope).