Mikhailtech take a look at Zalman’s 400watt PSU, a high quality PSU with active PFC, CNPS fan control and lots of extras.
The implementation of active PFC (Power Factor Correction) means a higher power factor (94% at full load, up from 75%) and less harmonic resonance. Active PFC uses active elements such as IC, FET and diodes to create a PFC circuit, whereas passive PFC uses passive elements (as the name implies) such as an iron core inductor. Although the passive method is more cost efficient, the power factor is significantly lower and harmonics are greater and harder to control, leading to higher levels of EMI. Another advantage of active PFC is that it can accept a full range (90-260v) of AC input, so no 115/230v switch is necessary (notice the sticker between the on/off switch and the plug).Read more
