Power saving circuit

Details Power saving circuit Power saving circuit

1978-08-14

1980-02-12

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, H01J 3100

Patent

active

041885686

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.

REFERENCES:
patent: 3621134 (1971-11-01), Waring
patent: 3814851 (1974-06-01), Nakagawa et al.
patent: 3947632 (1976-03-01), Giger et al.
patent: 4112465 (1978-09-01), Willis
patent: 4127875 (1978-11-01), Fernsler et al.

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