Deflection Yoke Making Plant

Abstract

A deflection yoke plays the role of hitting the screen of picture tube by vertical and horizontal convergence of electron beams from electron guns. Particularly, in color television rather than black and white set, electron beams from three electron guns are supposed to pass through a shadow mask and converge upon a screen. For the simultaneous convergence of three electron beams, the magnetic field must be uniform, otherwise there will arise a great convergence error.