Horizontal phase shifter

Details Horizontal phase shifter Horizontal phase shifter

1983-06-23

1985-08-20

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315370, H01J 2970, H01J 2976

Patent

active

045366837

ABSTRACT:
A horizontal deflection circuit for a CRT display includes a horizontal output transistor having an emitter-base junction presenting a resistance which varies as a function of temperature, a transformer having a 5 to 1 turns ratio coupling the emitter-base junction to a horizontal driver transistor which is driven by a horizontal oscillator transistor. A synchronizing signal controls initiation of the horizontal oscillator transistor. A feedback resistor is connected in the transformer primary circuit and supplies signal to a peak detector which develops a DC potential for varying the delay of the synchronizing signal to compensate for temperature change in the emitter-base junction which would otherwise horizontally displace the display on the CRT screen.

REFERENCES:
patent: 3979640 (1976-09-01), Fischman et al.
patent: 4028588 (1977-06-01), Kraus
patent: 4063133 (1977-12-01), Nero et al.

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