Circuit arrangement for generating in a picture display device a

Details Circuit arrangement for generating in a picture display device a Circuit arrangement for generating in a picture display device a

1974-06-27

1976-10-26

Farley, Richard A.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315393, H01J 2956

Patent

active

039886379

ABSTRACT:
A circuit arrangement for generating in a color picture display device a sawtooth correction current of line frequency flowing through the line deflection coils and having an amplitude varying at field frequency for the purpose of obtaining a better color superposition in the corners of the screen of the display tube. The circuit arrangement is provided with a modulator which includes an electronic switch switching at the line frequency, which connects a field generator to a resonant circuit during the line scan period, which resonant circuit includes in a parallel arrangement a capacitor and an inductance including the line deflection coil, the period of the resonant frequency of the resonant circuit being substantially twice the line flyback period. The electronic switch is formed by means of two diodes which are blocked during the line flyback period and which generate supply voltages for the amplifier controlling the modulator and for other parts of the display device so that the load on the field deflection generator is very small.

REFERENCES:
patent: 2649555 (1953-08-01), Lockhart
patent: 3320469 (1967-05-01), Slavik
patent: 3440483 (1969-04-01), Kaashoek et al.

Affiliated with

Also associated with

Rating

Circuit arrangement for generating in a picture display device a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit arrangement for generating in a picture display device a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for generating in a picture display device a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-187225