Active PFC: PFC( power factor correction)consists of active PFC and negative PFC. Active PFC, which is integrated into SkyRC 1200W/30A regulated power supply, can provide higher power utilization. Active PFC is the use of power electronics to change the waveform of current drawn by a load to improve the power factor, thus achieving the purpose of higher efficiency. It’s capable of correction on AC input voltage and universal on a global basis.