improvements in devices coprezione of mistake of purity lateral blue for cinescopi for colour television

摘要

Two oppositely directed electromagnets are mounted on a printed circuit plate around the neck of the television tube, one oriented directly towards the beam of the blue gun and the other one provided with a pole strap extending partway around the tube in both directions, surrounding the portion of the tube in which the beams of the other two guns are located. The direction of the field intersecting the beam of the blue gun is opposite to that of the field intersecting the beams of the red and green guns.