Sanyo DC-TS760 Service Manual page 26

IC BLOCK DIAGRAM & DESCRIPTION
IC161 BA10358(Operational Amplifier)
OUT1
1
1
-IN1
2
- +
+IN1
3
GND
4
IC453,455 KTC801U-Y(Switching Transistor)
6
Q1
1
IC412 KA7805R(Voltage Regulator)
INPUT 1
STARTING
CIRCUIT
V
8
CC
OUT2
7
2
-IN2
6
+ -
+IN2
5
5 4
Q2
2 3
CURRENT
GENERATOR
REFERENCE ERROR
VOLTAGE AMPLIFIER
IC410,411 PQ1CG21H2RZ(Chopper Regulator)
V 1
IN
Constant-
voltage
circuit
Q
Overcurrent
R
detection
circuit
S
Overheat
detection
circuit
IC450,460 NJM4558(Operational Amplifier)
A: OUT 1
A: -IN
2
A: +IN 3
4
V
EE
SERIES
PASS
ELEMENT
SOA
PROTECTION
THERMAL
PROTECTION
- 26 -
ON/OFF
Circuit
-
+
Soft start
OSC
-
+
3
COM
8
7
A B
6
5
3 OUTPUT
2 GND
2 V
OUT
5
ON/OFF
4 Oadj
Vcc
B: OUT
B: -IN
B: +IN