8-45
8-5. Error Detection Amplifier Circuit
The output v80.2V is compared with the reference voltage at the error amplifier IC671.
An error signal is applied to the control circuit via the photocupler PC621.
(Fig.8-5) Error Detection Amplifier Circuit
8-6. Over Voltage Protection
If some failure occurs and the output voltage of the secondary windings of T601 increase, the voltage of the
auxiliary winding of T601 also increase proportionally. When the voltage of C623 and IC621 pin 9 increase.
This action will stop the oscillator with in IC.
(Fig.8-6) Over Voltage Protection
CONTROL
CIRCUIT
+80.2V
GND
PC621
R674
IC671
R675
C673
2
1
3
IC621
D623
D625
T601
9
VIN
+
GND
-
2
C623
Summary of Contents for MultiSync FP1370
Page 13: ...4 4 REMARK SYMBOL Mount the EMF PWB 121E REMARK SYMBOL Clamp the connector ...
Page 14: ...4 5 REMARK SYMBOL COIL FORMING UPPER SIDE REMARK SYMBOL COIL FORMING LOWER SIDE ...
Page 23: ...4 14 REMARK SYMBOL REMARK SYMBOL Clamp CN CA CN CC and CN D with CLAMPER WIRE ...
Page 26: ...4 17 REMARK SYMBOL Clamp the wires SAFETY REMARK SYMBOL Clamp the wires CN ASD CN AF 21 ...
Page 80: ...5 51 Fig 3 11 CONV PWB Fig 3 12 EMF PWB CN EMF CN LL CN RR CNEM CN CA CN D CN CCB HS8N1 ...
Page 143: ...8 18 15V 80V AFC D FOCUS Fig 3 1 HIGH VOLTAGE CIRCUIT AND PROTECTOR CIRCUIT ...
Page 260: ...10 1 ...
Page 261: ...10 2 ...
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Page 263: ...10 4 ...
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Page 266: ...for Human Potential ...
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