AC Inlet & AC Input Filter Inductor ( L ) Capacitor (C ) AC Input Filter : Reducing and filtering Noise from AC line.
Bridge Rectifier & Filter Bridge Diode Capacitor Convert AC voltage into DC voltage by rectifying and smoothing AC.
Reduce the high voltage to a lower voltage. Converter Reduce the high voltage to a lower voltage. Power MOSFET , PWM IC Control : Control the high frequency switching pulse width and frequency to stabilize the output. SW Transformer : Step down the voltage with a high frequency transformer.
Rectifier and Output Filter Diode Capacitor Turning the AC into DC and filtering smoothing the ripple of the rectified voltage
Feedback Circuit Check error from secondary side and transfer to primary side (Control circuit) Optocoupler : Isolation and transfer signal from secondary to primary. Error Amplifier : Control output voltage is stability.