Scanning waveform generator for flat panel display devices

Details Scanning waveform generator for flat panel display devices Scanning waveform generator for flat panel display devices

1980-12-16

1982-04-20

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315366, H01J 2974

Patent

active

043261515

ABSTRACT:
A triangular waveform generator for applying a scanning waveform to the scan electrodes of a modular display device includes a constant current source and a coupling transformer. A charge storage capacitor is coupled to the secondary of the coupling transformer. A squarewave generator actuates a switch to alternately charge the capacitor in opposite directions resulting in the generation of the triangular waveform. Discharge means is provided to protect the switch from high voltages which could be developed when the generator is turned off.

REFERENCES:
patent: 2799784 (1957-07-01), Harris et al.
patent: 2863069 (1958-12-01), Campanella
patent: 2900502 (1959-08-01), Kuehn et al.

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