Horizontal deflection circuit

Details Horizontal deflection circuit Horizontal deflection circuit

1974-12-13

1976-01-06

Wilbur, Maynard R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315408, 315410, H01J 2952

Patent

active

039315452

ABSTRACT:
The current flowing through the horizontal deflection coil of a cathod ray tube is controlled by a transistor which is switched between saturation and cut off by a circuit having a pulse generator for generating a pulse in response to a horizontal synchronizing pulse. The leading edge of the generated pulse is delayed before being applied to the controlling transistor which switches sometime thereafter due to the storage time of the transistor. To insure that the blanking of the electron beam of the tube takes place during the retrace time, the blanking interval is set to occur a period of time after the horizontal synchronizing signal which is less than the sum of the storage time of the transistor and the time which the leading edge of the generated pulse is delayed.

REFERENCES:
patent: 3414668 (1968-12-01), Adams et al.
patent: 3551733 (1970-12-01), Johnson

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