Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1987-03-24
1988-12-06
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
335211, 335213, H01J 2976
Patent
active
047898062
ABSTRACT:
A cathode ray tube deflection unit comprising a field coil system with two diametrically opposite field deflection coils and a line coil system with two diametrically opposite line deflection coils. Each coil has a front end segment (15, 18), a rear-end segment (16, 19) and conductors (17, 20) extending between such segments. In order to prevent rotation of the horizontal lines of the raster on the CRT display screen with respect to the horizontal axis, which rotation is caused by tolerance errors in alignment of the two coil systems, a pair of plate-shaped parts (21, 21') of soft magnetic material are arranged respectively extending across the front end segment (15, 15') of the respective line deflection coils (11, 11') in positions coinciding with diametrically opposite vertices of a rectangle whose diagnonals intersect substantially on the longitudinal axis of the deflection unit, and at which positions a portion of the front end segment of a line deflection coil overlaps a portion of the front end segment of a field deflection coil.
REFERENCES:
patent: 4229720 (1980-10-01), Heijnemans et al.
patent: 4654615 (1987-03-01), McGlashan
Briody Thomas A.
Eason Leroy
Moore David K.
U.S. Philips Corp.
Wieder K.
LandOfFree
Cathode ray tube deflection unit comprising means for compensati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cathode ray tube deflection unit comprising means for compensati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode ray tube deflection unit comprising means for compensati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1495301