Deflection circuit having a controllable sawtooth generator
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United States of America Patent
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-
Oct 5, 1993
Issued Date -
N/A
app pub date -
Oct 8, 1992
filing date -
Mar 2, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a vertical sawtooth generator of a vertical deflection circuit, a first comparator generates an output signal when a retrace portion of a sawtooth signal is at a first magnitude to initiate a vertical trace portion of the sawtooth signal. An amplifier responsive to the sawtooth signal generates a feedback current at a time that occurs more than one-half of the length of vertical trace portion after vertical trace is initiated. The feedback current is coupled to a capacitor to develop a capacitor voltage. The capacitor voltage is applied via a voltage-to-current converter to an integrating capacitor to develop in the integrating capacitor the trace portion of the sawtooth signal.
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