System for and method of operating a discharge lamp
First Claim
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1. A system for the operation of a discharge lamp, comprising:
- a function generator and power amplifier combination having a first output and adapted to provide a power amplified acoustic waveform at said first output;
a d.c. power supply and resistor ballast combination having a second output, said second output being capacitively coupled to said first output to provide a ripply d.c. voltage; and
an H-bridge commutator operatively connectable to a discharge lamp and having an input connected to said ripply d.c. voltage, said H-bridge commutator adapted to provide an acoustically modulated square wave ballast waveform output in response to said ripply d.c. voltage.
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Abstract
A method of and system for operating a high intensity discharge lamp having an electronic ballast system is provided wherein the power supplied to the discharge lamp is increased by bending the arc in the arc tube in order to increase the length of the arc. Bending may be effected by injecting acoustic frequencies in the power supplied to the discharge lamp.
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Citations
3 Claims
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1. A system for the operation of a discharge lamp, comprising:
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a function generator and power amplifier combination having a first output and adapted to provide a power amplified acoustic waveform at said first output;
a d.c. power supply and resistor ballast combination having a second output, said second output being capacitively coupled to said first output to provide a ripply d.c. voltage; and
an H-bridge commutator operatively connectable to a discharge lamp and having an input connected to said ripply d.c. voltage, said H-bridge commutator adapted to provide an acoustically modulated square wave ballast waveform output in response to said ripply d.c. voltage. - View Dependent Claims (2, 3)
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Specification
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Current AssigneeOSRAM Sylvania Inc. (Ams-Osram AG)
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Original AssigneeOSRAM Sylvania Inc. (Ams-Osram AG)
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InventorsOlsen, Joseph A.
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Primary Examiner(s)Philogene, Haissa
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Assistant Examiner(s)Alemu, Ephrem
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Application NumberUS09/316,829Time in Patent Office718 DaysField of Search315/291, 315/248, 315/246, 315/300, 315/302, 315/80, 315/82, 315/209 R, 315/307, 315/DIG. 7, 315/244, 315/224US Class Current315/291CPC Class CodesH05B 41/2883 the controlled element bein...H05B 41/38 Controlling the intensity o...
