Specifications

CA1 Course Notes
Sharp Electronics (UK) Limited
CE Technical Support Group Page 57
Vertical Output Stage
Figure 50 : CA1 Vertical Output Stage
Vertical drive waveform comes from the differentiation circuit Q507, 508, which combines the two outputs
from IC201 on pins 63 ( VERT B ) and 64 ( VERT A ).
From this stage the waveform including flyback pulse is fed to the base of Q506 which along with Q505
is connected in a Darlington configuration, providing a high gain stage.
The signal fed in at this point has a negative going flyback pulse generated from the differentiation
amplifiers, this is caused by one of the waveforms being marginally different from the other, the result