PC Power & Cooling Silencer Mk III 400Wby Martin Kaffei on May 19, 2012 2:05 PM EST
Internal Design and Components
Opening the unit reveals a typical Seasonic design with a 120mm fan blowing at the top of the heatsinks, so the heatsinks benefit in that case from a shape that will allow air to pass through vertically. There is a Nippon Chemi-Con cap installed on the primary circuitry, and the secondary features Japanese capacitors as well. PC Power & Cooling operates with a common forward converter with two MOSFETs (one high-side and one low-side one), which allows the manufacturer to use a higher switching frequency and lower voltage rating for the transistors. EMI filtering is well equipped with two common-mode chokes, another choke against differential mode EMI, six Y capacitors, two X capacitors, and one MOV. The ICs provide all the necessary safety functions such as OVP and UVP.