Process and apparatus for the rapid adjustment of the static con

Details Process and apparatus for the rapid adjustment of the static con Process and apparatus for the rapid adjustment of the static con

1985-10-30

1987-01-13

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

H01J 2970, H01J 2976

Patent

active

046366946

ABSTRACT:
Process for adjusting the static convergence and/or purity of a color television tube by using a magnetic ring surrounding the neck of the tube and coils creating in this ring induction poles of values selected to carry out the adjustment. To the terminals of each coil a current impulse is applied conferring on the remanent induction an important value higher than that necessary to carry out the correction; then a current impulse is applied in the opposite direction effecting a partial demagnetization in such a way that the remanent induction allows the desired adjustment.

REFERENCES:
patent: 4211960 (1980-07-01), Barten et al.
patent: 4220897 (1980-09-01), Barten et al.
Patent Abstracts of Japan, vol. 6, No. 37, Mar. 6, 1982, p. 915 E 97.

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