Samsung DVD-812 Service Manual page 55

Circuit Descriptions
5-2-3 Internal Block Diagram
nternal Block Diagram of S.M.P.S. Circuit
5-2-3 (a) I
Smoothing
Circuit
Rectified Circuit
Line Filter
Power IN
(110~240V)
5-2-3 (b) PICF1 (STR-G6551) Internal Block Diagram
V I N
4
START
REG.
T.S.D
5-10
Noise
Converter
Removal
(SNUBBER)
PWM Control
Circuit
(STR-G6551)
Voltage
Detection
Circuit
O.V.P LATCH
O.S.C
FLT Driving
Circuit
3.3V Rectified
Smoothing Circuit
5V Rectified
Smoothing Circuit
8V Rectified
Smoothing Circuit
-8V Rectified
Smoothing Circuit
Fig. 5-19
DRIVE
_
Vin
+
Comp
Fig. 5-20
3.3V Rectified
VoltageCircuit
5V Rectified
VoltageCircuit (x2)
Motor 8V
1 Port
8V Rectified
VoltageCircuit
-8V Rectified
VoltageCircuit
1
D
2
S
5
O.C.P/
3
GND
Samsung Electronics
O
U
T
P
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