Philips 191E2SB/00 - Power Board

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Meridian 2
18
5.2 Adapter/Inverter/Converter Board
Inverter Board for 191E2
Converter Board for 191EL2
EN
A
Feedback Circuit
Transformer
(PT801, PT802)
Lamp
Output
Circui
t
PWM Control
ta9687GN
(IC801)
12V
DIM
MOSFET
APM4548A
5V
Protect Circuit
12V
EMI filter
Start Resistor
(
R934, R906
)
PWM Control
(
I
C90
1
)
Transformer
AC input
Bridge
Rectifier
and Filter
Feedback
Circuit
Rectifier
Diodes
Power Switch
(Q901)
Photocoupler
(IC902)
ENA
Current Feedback
LED
panel
Boost Circuit
Setup-up Controller
TA9690GN
(IC801)
12V
DIM
OVP Circuit