Philips 160E1SB/93 Service Manual page 18

Meridian 1
18
5.2.2 Power/Inverter Board
AC input 12V
Bridge
Rectifier
Transformer
EMI filter Rectifier
diodes
and Filter
5V
Start Resistor
(R904, R932)
Feedback
PWM Control
Circuit
Power Switch
(IC901)
(Q901)
Photocoupler
(IC902)
Output
Transformer MOSFET
12V
Circuit (T801) (Q802)
Lamp
ON/OFF
PWM Control
Feedback
TL494IDR
Circuit
DIM
(IC801)