8-2
2. V OUTPUT CIRCUIT
2-1 Actual Circuit
Fig. 3
2-2 Sawtooth Waveform Generation
(1) Circuit Operation
The sawtooth waveform generation circuit consists of as
shown in Fig. 4. When a trigger pulse enters pin 13, it is
differentiated in the waveform shape circuit and only the
falling part is detected by the trigger detection circuit, so the
waveform generation circuit is not susceptible to variations
of input pulse width.
The pulse generation circuit also works to fix the V ramp
voltage at a reference voltage when the trigger pulse enters,
so it can prevent the sawtooth wave start voltage from
variations by horizontal component, thus improving
interlacing characteristics.
WAVEFORM
SHAPE
TRIGGER
DET.
PULSE
GAIN
V. LAMP
AGC
R329
C321 C322
C32
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