DC Power Supply Variable, Switching Power Supply， 1000W(PFC) Constant Current And Voltage Active PFC， 24/36/48/60//150V Adjustable 1U Transformer

Note: 0-30V 0-28A is 840W. V*A=W Models: 24,1000w / 30,1000w / 36,1000w / 40,1000w / 48,1000w / 60,1000w / 72,1000w / ,1000w / 150,1000w, Role of active PFC: 1. Improve the power factor, synchronize the input AC voltage phase with the current phase, and the power factor is close to 1, so that the utilization rate of switching power supply to power grid is close to 100% 2. Reduce the harmonic (THD value), the active PFC circuit can greatly reduce the harmonic interference of the switching power supply itself and reduce the pollution to the power grid 3. Wide voltage input, high-power switching power supply can achieve wide voltage input of 90-265 like flyback low-power power supply (without switching between and voltage) 4 the active PFC itself is a boost boost power supply. First boost the input AC100-240 voltage to DC400 , and then send it to the pwwm circuit. Compared with the DC 310 after AC direct rectification and filtering, under the same power, the voltage is higher, the current flowing through the switch in the PWM circuit is reduced, and the heating capacity of the switch will also be reduced