AOC e2250Sw - Power Board Block Diagram

30
5.2 Power Board
AC input
14.5
EMI filter
Start Resistor
(R908,R911)
PWM Control
LD7576AGR
(U901)
Bridge
Rectifier
and Filter
Rectifier
diodes
Transformer
(T901)
Feedback
Circuit
Regulator
(IC903)
5V
Photo coupler
(U902)
Power Switch
(Q901)
D801
C809
14.5V
MOSFET
(Q801)
ON/OFF
DIM
L801
LED
(CN804)
PWM Control
OZ9998BGN
(U801)