Gating circuit for television SCR deflection system
AssigneeRCA Corporation
InventorRobert Joseph Gries
Life of this patent
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Abstract
In a television deflection system employing a first SCR for coupling a deflection winding across a source of energy during a trace interval of each deflection cycle and a second SCR for replenishing energy to the source of energy during a commutation interval of each deflection cycle, a gating circuit for triggering the first SCR. The gating circuit employs a voltage divider coupled in parallel with the second SCR which develops gating signals proportional to the voltage across the second SCR.
Claims5
In a television deflection system in which a first switching means couples a deflection winding across a source of energy during a trace interval of each deflection cycle and a second switching means replenishes energy to said source of energy during a commutation interval of each deflection cycle, a gating circuit for said first switching means, comprising:
- capacitive voltage divider means coupled in parallel with said second switching means for developing gating signals proportional to the voltage across said second switching means;
- and
- means for coupling said voltage divider means to said first switching means to provide for conduction of said first switching means in response to said gating signals.
Dependencies are inferred from the claim text.