Synchronized high voltage generator

Details Synchronized high voltage generator Synchronized high voltage generator

1998-08-07

1999-12-28

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

348542, H02M 7515, H04N 504

Patent

active

060090065

ABSTRACT:
In a video display operable at multiple horizontal scanning frequencies, a synchronized high voltage generator is substantially undisturbed during synchronizing source selection or interruption. The generator comprises a controlled oscillator generating a drive signal. A source of pulses synchronizes the controlled oscillator and has a plurality of scanning frequencies. A high voltage generator is coupled to the drive signal and generates a display energizing supply. The scanning frequencies occur in two frequency bands, and when synchronized the oscillator generates the drive signal having a frequency only in a higher frequency band of the two frequency bands. In a further inventive arrangement a high voltage generator for a video display is operable at a plurality of horizontal scanning frequencies and is controlled such that the high voltage supply remains substantially constant during an interruption of horizontal scanning pulses from the source.

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