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Power Supply(1)
DESCRIPTION
DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Fan Motor
Driving Relay, Buzzer Driving, Swing Motor Driving Relay and LED Display. AC voltage of secondary Power
Transformer is rectified by 4 Diode, and it is filtering by Main Condensor C2.
Filtered DC voltage is about +17V is regulated +12V DC by Regulator IC7812.
And it is regulated +5V DC by Regulator IC7805.
VAR1 is surge filter and C4, C6 is Noise filter.
AC 220V
C1
335
VAR1
POWER
TRANS
+
C2
2200/35V
+
C7
100/16V
2
13
C6
0.1
+
C5
470/25V
C4
0.1
C3
104
7812
2
13
7805