Power Control; Voltage Measurement; Figure 2-5 Voltage Measurement And Surge Protection Circuit - Samsung S3F84B8 Design Manual

S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00

2.4 POWER CONTROL

Power is the product of voltage and current (P = V x I). Figure 2-5 and
system voltage and current, separately.

2.4.1 VOLTAGE MEASUREMENT

Figure 2-5 shows the circuit diagram for voltage measurement and surge protection.
Resistor divider decreases the voltage level to the proper ADC range.
AC_L
220 VAC
AC_N
surge protection
Surge_P
Figure 2-5 Voltage Measurement and Surge Protection Circuit
Figure 2-6
1N4007
D9
D10
R17
1N4007
470K/0.5W
R18 R19
820K/0.5W 820K/0.5W
C15
102/1KV
R27 R20
6K8 29K
C18
221
2-9
2 HARDWARE IMPLEMENTATION
show the measurement circuit of
SY S_V
C16
+
10uF/50V