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US 3,990,030 AGranted
Pincushion correction transformer
AssigneeStandex International Corporation
InventorEdward R. Chamberlin
Life of this patent
Estimating the term…
Abstract
For use in the deflection circuitry of a cathode ray tube, such as with a television receiver picture tube, a single pincushion correction transformer providing both vertical and horizontal correction. The transformer includes an E core having a control winding provided around the central leg, a horizontal correction winding provided on one outer leg and a pair of phase opposed windings on the other leg to minimize cross modulation and sensitivity to stray magnetic fields.
Claims10
A pincushion correction transformer comprising:
- an E core having a central leg and first and second outer legs, all of said legs being connected in magnetic circuit at their ends only by first and second core segments to define a two window magnetic core;
- a first winding on said first leg;
- a second winding on said first leg connected to said first winding in equal and opposite phase to provide a vertical correction winding;
- first and second electrical terminals coupled to said interconnected first and second windings;
- a third winding around said central leg and serving as a control winding for said transformer;
- third and fourth electrical terminals coupled to said third winding;
- a fourth winding around said second outer leg serving as a horizontal correction winding;
- fifth and sixth electrical terminals connected to said fourth winding.
5 more elements
Dependencies are inferred from the claim text.