Philips 190V1SB/93 Service Manual page 18

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Meridian 1
18
5.2.2 Power/Inverter Board
AC input
EMI filter
Output
Circuit
Lamp
Feedback
Circuit
Bridge
Rectifier
and Filter
Start Resistor
R904, R905
PWM Control
(IC901)
Transformer
(PT801)
Rectifier
Transformer
diodes
Power Switch
（Q901）
Photocoupler
(IC903)
MOSFET
Q805, Q806
PWM Control
TA9687GN
(IC801)
16V
5V
Feedback
Circuit
16V
ON/OFF
DIM
PID