A new approach to the convergence of multi-beam kinescopes

Misconvergence of the beams in color kinescopes due to deflection has been corrected in the past by the use of dynamic convergence devices. Six independent fields are required to deflect three beams without misconvergence. Conventional deflection yokes supply two of these fields; the remaining four are supplied by convergence magnets. A more general system employs six coexistent deflection fields. Such a system is capable of producing deflection without misconvergence or loss in color purity. This paper discusses the theory and experimental verification of this concept.