Da, pomislio sam i ja na PFC.
There are two types of power factor correction circuits: passive and active. The Passive PFC uses components which doesn't need supply (such as ferrite core coils) and fits the power factor between 0.60 (60%) and 0.80 (80%). Active PFC uses electronic components such as integrated circuits, transistors and diodes and, as per manufacturers statement, it's able to generate a power factor of over 0.95 (95%). Power supplies with no power factor correction circuits at all have a power factor below 0.60 (60%).
Samo sto ovo na slici bas nije slicno induktivitetu s feritnom jezgrom....
Mislim, veci je od glavnog trafoa (u sredini na fotki):
http://shrani.si/?16/Og/1pcqn9jn/p1010076.jpg