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BeQuiet Dark Power Pro 10 850W PSU Review

The 135mm SilentWings 2 fan (BQT T13525-XF20). This fan is a fluid dynamic bearing model with copper core. The fan is decoupled from the case which helps reduce vibrations and subsequent noise. This fan is rated to 2,000 rpm with 0.38A of current, it requires 4.56W of power. This model can produce around 86 CFM airflow.

The fan in the 550W model (BQT T13525-LF15) is rated to 1,500rpm with 0.22A of current.

This is a Seasonic Full Bridge design. Full bridge describes the number of MOFSET’s used in the PWM Stage of the block diagram (No.4). The MOSFETs are responsible for creating high frequency alternating current, which offers the best efficiency for the main transformation.

Half Bridge power supplies use two MOSFETs, which is perfect for lower wattages. Doubling the number of MOSFETs to four helps to reduce the load on every one of them, which is important for higher wattage units. The daughter PCB contains a control IC for the protection circuitry. The EMC/EMI filter is set to ensure immunity from radiation and conducted emissions.

The Dark Power Pro 10 also features zero voltage switching and zero current switching technology, which captures power “lost” by other topologies.

The DC to DC daughter PCB handles the conversion to 3.3V and 5V from the 12V DC. Next to the main transformer is the OPP control coil for current detection.

The primary capacitors are 390uF, 420V. All of the capacitors in the unit are Japanese high grade, 105c rated. The power supply has OCP (over current protection), UVP (Undervoltage protection), OVP (Overvoltage protection), SCP (Short Circuit safeguard), OTP (Temperature Safeguard) and OPP (overload protection).

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