Vertical deflection circuit

Details Vertical deflection circuit Vertical deflection circuit

1974-11-21

1976-07-20

Wilbur, Maynard R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315395, 315398, 315399, 315403, H01J 2972, H01J 2976

Patent

active

039708969

ABSTRACT:
A vertical deflection circuit which vertically deflects the electron beam of a cathode ray tube in response to vertical synchronizing pulses comprises a vertical deflection coil having one end connected to a reference voltage source and the other end connected to a first and second current generating means. The first current generating means generates a current having a repetitive sawtooth waveform which is in synchronism with vertical synchronizing pulses; and the second current generating means generates a constant current whose amplitude is selectively adjustable to control the vertical starting position of the electron beam of the cathode ray tube.

REFERENCES:
patent: 3139538 (1964-06-01), Geller
patent: 3541385 (1970-11-01), Rothermel
patent: 3659141 (1972-04-01), Kubala

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