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US 2003/0193302 A1Published application
Lighting system
AssigneePatent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh
InventorsAndreas Huber, Herbert Kastle, Walter Limmer, Peter Niedermeier
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Abstract
Lighting system for high-pressure discharge lamps which can generate a lamp voltage UL which is amplitude and, if necessary, frequency-modulated. The frequency modulation is provided by an inverter whose inverter frequency is modulated. The inverter is fed by a clocked d.c. voltage supply which emits an operating voltage U0 which is amplitude-modulated.
Claims10
A lighting system having the following features:
- a d.c. voltage supply which is clocked at a converter frequency and supplies an operating voltage,
- an inverter which is fed by the operating voltage and has output terminals at which a lamp voltage is present,
- a high-pressure discharge lamp which is connected to the output terminals and has at least one acoustic resonant frequency,
- characterized in that the converter frequency is an n-fold multiple of an acoustic resonant frequency, where n is a natural number other than zero.
1 more element
Dependencies are inferred from the claim text.