Electomagnetic deflection unit

Details Electomagnetic deflection unit Electomagnetic deflection unit

1987-09-01

1988-11-15

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335210, H01H 500

Patent

active

047852720

ABSTRACT:
A cathode ray tube electromagnetic deflection unit comprising field deflection coils (8,8') and line deflection coils (10, 10'), both of the saddle type, wound directly onto an annular support (4). The field deflection coils consist of a first part (11) wound against the inner side of the support (4) and a second part (12) wound against the line deflection coils (10, 10'). At the narrow end (5) of the support (4) the second part (12) extends in the longitudinal direction further than the line deflection coils (10,10'), and the first and second parts (11, 12) are electrically connected in series. Such a deflection unit has high sensitivity and minimizes coma errors.

REFERENCES:
patent: 4272727 (1981-06-01), Nieuwendijk et al.
patent: 4524340 (1985-06-01), Sluyterman

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