MCD 46
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
2 - 1
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
IC-Innenbeschaltungen / IC Block Diagrams
30k
30k
V
ref
Error
Amp
PWM
Comparator
NON
INVERT
INPUT
INVERT
INPUT
POWER
SW
1/2 V
ref
V
ref
N. C.
V
CC
FEED
BACK
D - TIME
CONT
N. C.
OUT
C
T
R
T
GND
14
13
12
11
10
9
8
1
2
3
4
5
6
7
+
−
Voltage
Regulator
Triangle
Oscillator
IC 700 / BA 9700 AF
IC 500 / BA 6791 FP
30k
Ω
30k
Ω
30k
Ω
30k
Ω
Control
IN1
V
CC
V
S2
V
S1
OUT1
OUT2
IN2
30k
Ω
30k
Ω
30k
Ω
30k
Ω
Control
IN3
IN4
V
CONT
OUT3
OUT4
GND
GND
Thermal
shutdown
1
2
3
4
5
7
6
8
9
10
11
12
13
14
IC 501 / LB 1836 M
