Process and apparatus for multi-polar magnetization of annular p

Details Process and apparatus for multi-polar magnetization of annular p Process and apparatus for multi-polar magnetization of annular p

1980-04-18

1982-10-12

Miller, J. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

335212, H01F 700

Patent

active

043542182

ABSTRACT:
Apparatus for magnetizing circular permanent magnet convergence rings used in kinescopes comprises a number of separate coils wound in composite fashion on one or more pole pieces of a magnetizing device which surrounds the convergence ring, selected groups of these coils being connected with individual magnetizing and demagnetizing circuits chosen to impart a complex multi-polar magnetization to a convergence ring by simultaneous actuation of these circuits.

REFERENCES:
patent: 3088056 (1963-04-01), Tevonian
patent: 3271707 (1966-09-01), Koehler
patent: 3609611 (1971-09-01), Parnell
patent: 3708727 (1973-01-01), Wielebski et al.
patent: 3969657 (1976-07-01), Oettinghause
patent: 4105983 (1978-08-01), Barten et al.
patent: 4138628 (1979-02-01), Smith
patent: 4162470 (1979-07-01), Smith
patent: 4189659 (1980-02-01), Andre et al.

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