Nonlinear inductor with magnetic field reduction

Details Nonlinear inductor with magnetic field reduction Nonlinear inductor with magnetic field reduction

1992-09-01

1994-09-27

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315 8, 315399, 336110, G09G 104, H01J 2906, H01F 2100

Patent

active

053509803

ABSTRACT:
A nonlinear inductor for a CRT line timebase circuit comprises a bobbin carrying an inductive coil 41 and a first permanent magnet adjacent the coil. A second permanent magnet is positioned and oriented relative to the first magnet in such a manner that the magnetic field generated by the nonlinear inductor is substantially reduced. Because the second magnet is integral, the nonlinear inductor occupies the same printed circuit board area as a conventional nonlinear inductor. Furthermore, because the second magnet is oriented to substantially cancel the magnetic field, no additional magnets are required for deflecting the magnet field away from the CRT.

REFERENCES:
patent: 3153174 (1964-10-01), Claypool et al.
patent: 3434001 (1969-03-01), Okuda
patent: 4257026 (1981-03-01), Zelazo et al.
patent: 4331907 (1982-05-01), Laux
patent: 4634930 (1987-01-01), Toshiyasu et al.

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