This project is Active Power Factor Correction Using MC33262
You can order this PCB from here:
Parts list:
IC MC33262
1:12 Transformer 4.7mH (Inductance calculated by formulas)
Bridge diode
EMI filter
Ultra fast diodes UF5402(2pcs) - D5 & D6
Capacitor 0.47uF 50v - C4
Capacitor 220uF 450V - C3
MOSFET 8N50E - Q1
Resistor 100K - R6
Resistor 22K(2pcs) - R1 & R4
Resistor 3.3M (2pcs) - R5 & R2
Resistor 30K - R3
Resistor 1.5K - R1
Resistor 2.2R - R7
Circuit:
Following circuit designed for 15W load, you have to calculate the resistor and inductor value using some formulas in the datasheet here:
Results:
Current waveform (yellow line) is for an LED lamp with power factor of 0.68, as you can see the current waveform become sinusoidal after using the circuit.
Video:
For more details please watch this video
