Filter
Top Products
a
Filter Circuit
AC input
Principles of Operation
Secondary
-
I
I
I
Full Wave
Pectification
-
Smoothing
-
$M$ing
Smoothing
Circuit
Circuit
. .
i
I
Circuit
I
I
,
t
+5v
Switching
Regulator
.~~~-~~~~~-~~~~~
+5v
Over Current
Control Circuit
----------------
+5v
_
Photo-
+
+35
V Line
coupler
Detector Circuit
\
I
ZD51
+t
+35
V Line
Voltage Overload
Protection Circuit
2052
I+
J
-9
+35 VDC
4 +5 VDC
L
-
Voltage Drop
Protection Circuit
Power
-
Switch
Figure 6-22. Power Supply Circuit Block Diagram
-
Epson
FX-870/1170
6-21