Caple C702G Manual de servicio Pagina 170

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 286
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 169
8-45
8-5. Error Detection Amplifier Circuit
The output voltage +80.2V 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
Vista de pagina 169
1 2 ... 165 166 167 168 169 170 171 172 173 174 175 ... 285 286

Comentarios a estos manuales

Sin comentarios