Discharge lamp dimmer circuit with piezo-electric transformer an

Details Discharge lamp dimmer circuit with piezo-electric transformer an Discharge lamp dimmer circuit with piezo-electric transformer an

1997-11-24

1999-06-08

Wong, Don

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315209PZ, 315DIG2, 315DIG5, 310311, G05F 100

Patent

active

059107111

ABSTRACT:
A circuit arrangement for operating a discharge lamp comprising an oscillator for generating a high frequency input voltage and a piezo-electric transformer with input terminals coupled to the oscillator and output terminals. A load circuit is coupled to the output terminals of the piezo-electric transformer and includes terminals for lamp connection. The load circuit comprises an adjustable capacitor which forms a very simple device for controlling the light output of the discharge lamp over a wide range.

REFERENCES:
patent: 3691410 (1972-09-01), Kawada
patent: 3700936 (1972-10-01), Shimizu
patent: 5084801 (1992-01-01), El-Hamamsy et al.
patent: 5701049 (1997-12-01), Kanayama et al.
patent: 5705877 (1998-01-01), Shimada

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