Current regulating circuit for magnetic deflection systems

Details Current regulating circuit for magnetic deflection systems Current regulating circuit for magnetic deflection systems

1976-10-15

1978-12-12

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315399, H01J 2970, H01J 2972

Patent

active

041298071

ABSTRACT:
The current in the deflection coil of a video display system is converted into a DC voltage and applied to a peak detector. Peak values of the DC voltages as stored by the peak detector are amplified and then compared with a reference voltage at the input of a comparator amplifier. The comparator amplifier provides an output as a base drive to a regulating transistor that has an emitter-collector junction in series with the deflection coil and an unregulated source of DC power.

REFERENCES:
patent: 3609219 (1971-09-01), Diehl
patent: 3947723 (1976-03-01), Thompson
patent: 4009426 (1977-02-01), Bohringer

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