This project is Active Power Factor Correction Using MC33262
You can download the Gerber file of 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.
Watch this Video for more Details:
