Regulated deflection circuit
AssigneeRCA Corporation
InventorPeter E. Haferl
Life of this patent
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Abstract
First and second resonant circuits store energy from a supply. First and second switches are respectively coupled to the first and second resonant circuits for generating resonant oscillations in the resonant circuits. A deflection circuit coupled to one of the resonant circuits has energy transferred to the deflection circuit during the resonant oscillations. A control circuit coupled to the switches varies the conduction angle overlap of the resonant oscillations in the resonant circuits for providing energy regulation.
Claims13
A regulated deflection circuit, comprising:
- a deflection circuit comprising a deflection winding and deflection switching means coupled to said deflection winding for forming first and second deflection intervals;
- first and second resonant energy circuits;
- supply means coupled to said first and second resonant energy circuits for storing energy in said first and second resonant energy circuits;
- deflection circuit energy transfer means coupled to said deflection circuit and to at least one of said first and second resonant energy circuits for transferring energy to said deflection circuit;
- first means coupled to said first and second resonant circuits for transferring energy between said first and second resonant circuits;
- first and second switches coupled respectively to said first and second resonant circuits for generating resonant oscillations in said first and second resonant circuits;
- and
- control means coupled to said first and second switches and responsive to an energy level of said deflection circuit, for controlling the conduction of said first and second switches, the conduction angle overlap of said first and second switches controlling the energy transfer to said deflection circuit.
A regulation deflection circuit, comprising:
- a source of unregulated energy;
- first and second capacitors serially coupled to said source for storing energy from said source;
- a flyback transformer, including a first winding serially coupled with said first capacitor;
- a deflection circuit, including a trace switch coupled to a second winding of said flyback transformer;
- a second transformer, including a first winding coupled to said first capacitor and a second winding coupled to said second capacitor for respectively forming first and second resonant circuits, said first and second windings of said second transformer loosely coupled to each other magnetically for providing a substantial leakage inductance for limiting the energy transfer between said first and second resonant circuits;
- first and second switches respectively coupled to said first and second resonant circuit for respectively producing first and second resonant oscillations in said first and second circuits for transferring energy between said first and second resonants circuits and said deflection circuit;
- and
- control means coupled to said first and second switches for controlling the conduction of said first and second switches, said control means responsive to an energy level of said deflection circuit for varying the conduction overlap of said first and second resonant oscillations.
A regulated deflection system, comprising:
- a source of energy;
- first and second resonant circuits coupled to said source for storing energy from said source;
- a first transformer magnetically coupling said first and second resonant circuits for transferring energy between said first and second resonant circuits;
- a flyback transformer, said first resonant circuit coupled to a first winding of said flyback transformer;
- a deflection circuit coupled to a second winding of said flyback transformer for transferring energy to said deflection circuit from said first resonant circuit;
- and
- first and second switching means respectively coupled to said first and second resonant circuits for generating resonant oscillations in each of said first and second resonant circuits, the conduction angle overlap of said resonant oscillations controlling the amount of energy transfer to said deflection circuit.
Dependencies are inferred from the claim text.