Explanation Of Circuit - Sharp KS-COM18 Service Manual

BLOCK DIAGRAM
VR Power supply
circuit
Cooking heater drive
circuit
Warming heater
drive circuit
VREF Power supply
and detector circuit
Thermistor plate ass'y
TH1
Room temperature thermistor

EXPLANATION OF CIRCUIT

VDD Power supply
circuit
CONTROL UNIT
Temp. detector circuit
Thermistor Thermistor resistance
o
temperature ( C) (kΩ)
TH1
-5.0
45.74
34.70
0.0
20.0
12.61
30.0
8.00
50.0 3.51
60.0
2.42
66.0
68.0
70.0 1.71
1.45
75.0
100.0
0.680
125.0
11
Display
Power supply frequency
SYNC signal generating
circuit
User interface circuit
Model change
MODEL NAME
KS-COM18
TH Plate
205.6
159.2
61.48
39.72
17.72
12.20
9.83
9.16
8.55
7.20
3.23
1.58
MODEL CHANGE
R72 R73
10k
OPEN