Samsung S3F84B8 Manual do Utilizador descarregar pdf (Página 15)

S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 2 HARDWARE IMPLEMENTATION

2-9

2.4 POWER CONTROL

Power is the product of voltage and current (P = V x I). Figure 2-5 and Figure 2-6 show the measurement circuit of

system voltage and current, separately.

2.4.1 VOLTAGE MEASUREMENT

Figure 2-5

shows the circuit diagram for voltage measurement and surge protection.

R20

29K

C16

10uF/50V

SYS_V

R27

6K8

C18

221

Surge_P

220 VAC

AC_L

1N4007

AC_N

D10

1N4007

surge protection

R17

470K/0.5W

R19

820K/0.5W

R18

820K/0.5W

C15

102/1KV

Figure 2-5 Voltage Measurement and Surge Protection Circuit

Resistor divider decreases the voltage level to the proper ADC range.

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