A New Generation of Dual-Toroidal Yokes

The feasibility of a more general application of toroidally -wound deflection yokes (combined vertical and horizontal toroidal coils) to commercial color television receivers has been studied: considerable progress through developments based on research into coil-design permutations and the limitations of previous applications has been achieved to date. Much greater manufacturing consistency is noted in the developmental toroidal yoke described than was previously obtainable with "saddle"-wound yokes; other features of the yoke described include a compact core, more economic use of wire, rapid adjustment of convergence in a receiver, characteristics favoring the trend toward low -impedance sweep systems inherent in solid-state television receivers, and applicabi lity to both in-line and delta-gun array picture tubes. Simplified supporting hardware is used with the new yokes. It is anticipated that, with further development, the toroidal yoke may be well become the standard of the industry.