HP S7650
14
Pin28 (BDRV) is floating
Pin26 (HDRV) is floating
Vertical Oscillator
The vertical free
–
running frequency is determined by the capacitance C613 at pin22. Usually the free-running
frequency should be lower than the minimum trigger frequency.
5-3 Transistor & Diode Circuit
LOCATION
CIRCUIT FUNCTION DESCRIPTION
D901~D904
Rectifier Diode for AC Source
D910
Clamp Diode for snub CKT
D919
Rectifier for Output Voltage
D922
Rectifier for Output Voltage
D923
Rectifier for Output Voltage
D925
Rectifier for B+ Supply
D929
B+ Feed Back Rectifier from F.B.T Pulse
IC901
Power IC for Switching Power Control (Build-in MOS FET)
Q907, Q908
Use for Power Saving to Cut-off 6.3V Supply Voltage
Q909, Q910
Use for Power Saving to Cut-off 14V Supply Voltage
Q912, Q920
Push-Pull Topology to Drive Q911
Q913 Degaussing
Switcher
Transistor
Q906 5V
Regulator
Transistor
Q402
HOR. Driver Transistor
Q440
Horizontal s correction control MOSFET(Four in one)
Q404, Q405
As Differential Amp. to Drive Q406
Q406
Transistor for H-Size Control
Q705 Brightness
Control
CKT
Q742
V-Dynamic focus CKT
Содержание S7650
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