25
design in CTV power supply. With this features it offers really safe and reliable power
management
Features :
•
Quasi resonant convertor controller.
•
Internal bus mode controller.
•
Pulse by pulse current limiting.
•
Over current latch protection.
•
Over Voltage protection( V-Sink Min 11 Volt).
•
Internal thermal Shut Down function.
•
Under Voltage lock out.
•
Internal High Voltage sensitivity
•
Auto restart mode.
PINNING : STR 5Q0765
Pin No
Description
Voltage (in Volts)
1
Drain
300 V
2 Ground
0
3
VCC
Low level: 12.59V
High level: 40V
4
Feedback
Low level : 0.3 V
High level: 6.9V
5
SYNC
Low Level : 0.74V
High Level :11V
11. VIDEO AMPLIFIER STAGE:-
Transistorised amplifier circuit is used to amplify the R,G,B
signal received from TDA9351. The R,G,B output from TDA9351 is applied to base of
B911,B921 and B931 and push pull amplifier is used to amplify this signal further and applied
to cathode of CRT. Voltage details of 9 transistors used in video amplifier section are as
follows.
