- 18 -
19. High Voltage Output & FBT (Flyback Transformer).
The high voltage output circuit is used for generating
pulse wave to the primary coil of the FBT (Flyback
Transformer (T701)). A boosted voltage (about 27kV)
appears at the secondary of the FBT and it is supplied
to the anode of the CDT.
And there are another output voltages such as the
dynamic focus voltage.
18. Moire Reduction Circuit
This circuit reduce interference between the periodical
display pattern and the CDT's slot (or dot).
The positions of every other one dot video signal
beams (red, green, and blue beam) are shifted finely,
thus reducing interference.
15. Video Processor Circuit.
Video processor circuit consists of the video drive
output block. The video drive IC(IC302) receives the
video signal from PC. The gain of each channel is
controlled by MICOM through IIC.The cut-off circuit
compensate different voltage of each channel between
the cathode and the G1 of the CDT
16. Video Pre-Amp Circuit.
This circuit amplifies the analog video signal from
0~0.7 V to 0~4 V. It is operated by taking the clamp,
R,G,B drive and contrast signal from the MICOM
(IC401)
17. Video Output Amp Circuit.
This circuit amplifies the video signal which comes
from the video pre-amp circuit and amplified it to
applied the CDT cathode
20. Video Bright-Window Circuit.
This circuit amplifier the analog video signal from
0-0.7V to 0-0.9V when it was operated by PC Bright
Window program.With each input being seperately
controlled by it's own contrast to allow luminance
differentiation between inside and outside Window
Video.When a user select Bright-Window icon and
drag his mouse to the special point of screen that
window is highbrighted by window highlight function.
