Sawtooth wave circuit and signal waveform in field scanning circuit
Source: InternetPublisher:newrudeman Keywords: Scanning circuit signal waveform sawtooth wave signal generation Updated: 2020/12/13
Sawtooth wave circuit and signal waveform in field scanning circuit
The sawtooth wave signal generation circuit is an indispensable circuit for color TV airport scanning. Figure 1 shows the structure and signal waveform
of the Toshiba 2150 color TV field output stage circuit . The field pulses from the field scanning signal generation circuit are sent to the LA7837 ② pin, first enter the sawtooth wave signal forming circuit in the IC , and the sawtooth wave signal
can be measured at the @ pin . Then it is amplified by the amplifier, and finally amplified by the output stage power and outputs
a scanning signal with a peak value of about 54V from the @ pin. Sent to the deflection coil, main power supply {-27 V (⑧pin)
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