4PCB DRIVING DESCRIPTION
Power Supply(1)
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| CL1 VAR |
AC 220V |
| 275V |
| FUSE1 | 104K |
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| 3.15A |
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POWER TRANS
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| 12V |
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| 5V |
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D1 | D2 |
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| IC2 |
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| IC3 |
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| CC1 | CE1 | 7812 | CC2 | CE2 | 7805 | CC3 | CE3 |
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| VI | VO | VI | VO |
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D4 |
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| G |
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D3 | 104 | 35V |
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| 104 | 25V |
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| 104 | 16V |
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| 1000∝ F |
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| 470∝ F |
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| 100∝ | F |
DESCRIPTION
DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Triac Driving Photo Triac, Buzzer Driving, Stepping Motor. AC voltage of secondary Power Transformer is rectified by Bridge Diode, and it is filtering by Main Condensor CE1.
Filtered DC voltage is about +18V, is regulated +12V DC by Regulator IC7812. And it is regulated +5V DC by Regulator IC7805.
VAR is serge filter and CC1, CC2, CC3 is Noise filter.
Oscillator(2)
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| 5V |
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| CC13 |
| OSC |
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| 104 | ||||
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| 8M |
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DESCRIPTION
Oscillatory Frequency drive Micom, it is made up 8MHz resonator oscillatory Freqency. Ocillatory wave is as following Fig
VSS+10%
Fig
23
