33
Power Supply(1)
DESCRIPTION
DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Triac Driving
Photo Triac, Buzzer Driving Swing, Sweep Motor. AC voltage of secondary Power Transformer is rectified by
Bridge Diode, and it is filtering by Main Condensor C9.
Filtered DC voltage is about +18V, is reg12V DC by Regulator IC7812.
And it is reg5V DC by Regulator IC7805.
Z101 is serge filter and C10, C12, C14 is Noise filter.
AC 220V
C8
104K/250V
Z101
FUSE1
3.15A
POWER TRANS
BD1
+
C9
2200
µ
/35V
C10
104
U7
7812
VI VO
G
U8
7805
VI VO
G
+
C11
470
µ
/25V
C12
104
+
C13
47
µ
/16V
C14
104
12V
5V
Oscillator(2)
50
x1
6M
51
V
DD
-10%
V
SS
+10%
Fig 2-1
DESCRIPTION
Oscillatory Frequency drive Micom, it is made up 6MHz resonator oscillatory Freqency.
Ocillatory wave is as following Fig 2-1.
