Block Diagram (Smps) - AOC CM-736 Service Manual

Vin
SMOOTHED
RECTIFIED
&
SMOOTHED
Vcc
IC901
P.W.M.
CONTROL
CKT.
O/P
osc
LINE
FILTER
H-SYNC.
CKT.
AC INPUT
9OV~264V
CM-736 BLOCK DIAGRAM (SMPS)
l
POWER
TRANSFORMER
m
Q901 & Q913
POWER MOS
. .
T904
DRIVER
CKT.
. .
T903
H-SYNC.
CONTROL
OUTPUTS
RECTIFIED --) ?
&
SMOOTHED
T951
VARIABLE
TRANSFORMER 1
Q951
POWER MOS
CS
CONTROL
CKT.
& O.C.P.
Vref
A A
CKT.
osc F.B
H-SYNC
CKT.
0
H-SYNC PULSE
30KHz~65KHz
_ +27V
OUTPUTS
RECTIFIED
.
+70~150v
VARIABLE
(31K~64K)
,
R970
CURRENT
SENSE
<
REFERANCE
V O L T A G E
w F.B
] 1 SENCE 39.5V
MANUAL
DEGAUSSING
CKT.
+130V
+75V
+15V
+7.5V
-22v