3.2.6
Sub power supply circuit
The sub power supply circuit is provided for the internal analog circuit. Input is
24V and output is Vcc and +5Va. The circuit configuration is shown below:
+24Vdc
Vcc
Switching
+12V
+5Va
+24Vdc
+12V
Vcc
+3.3V
The sub power supply is used for: A/D, and logic circuits.
Regulator
Linear
Regulator
Linear
Regulator
Linear
r
Regulato
3-8
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