VIDEO DISPLAY APPARATUS

In a video display apparatus, the high voltage generating circuitry (40,42,55) responds to trigger pulses (from 72) derived from horizontal deflection retrace-related pulses (from 36). During normal horizontal deflection operation, the trigger pulses produced are of sufficient amplitude to cause nor...

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Bibliographische Detailangaben
1. Verfasser:	DIETZ, WOLFGANG F. W
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	In a video display apparatus, the high voltage generating circuitry (40,42,55) responds to trigger pulses (from 72) derived from horizontal deflection retrace-related pulses (from 36). During normal horizontal deflection operation, the trigger pulses produced are of sufficient amplitude to cause normal triggering of the high voltage generating circuits (40,42,55) resulting in normal high voltage levels being produced. Under abnormal horizontal deflection operation in which the horizontal deflection current is not produced, the trigger pulses are of insufficient amplitude to trigger the high voltage generating circuit, and hence no high voltage level is produced.