Power saving circuit
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United States of America Patent
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-
Feb 12, 1980
Grant Date -
N/A
app pub date -
Aug 14, 1978
filing date -
Aug 14, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for selectively supplying current to the horizontal oscillator from one of two voltage sources. The first voltage source is primarily used to supply current to the horizontal output stage and supplies the oscillator only during startup of the horizontal deflection system. The second source is derived from a winding on the flyback transformer and supplies current to the oscillator after the startup period, that is, after its voltage or another or other voltages developed by sources derived from flyback windings have reached values sufficient to assure sustained operation of the horizontal deflection system. A startup detector responsive to a flyback-derived voltage determines which of the two voltage sources provides current at the output of the starting network, that is, at the power supply terminal of the horizontal oscillator.
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