Passive LC ballast and method of manufacturing a passive LC ballast
First Claim
1. A passive LC ballast for use with a high voltage discharge lamp comprising an inductor and a capacitor connected in series with the inductor, wherein the inductor and the capacitor are arranged to define an inductance-capacitance pair having an inductance and a capacitance selected in accordance with an inductance-capacitance relationship based on the following equations:
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Abstract
The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.
29 Citations
22 Claims
- 1. A passive LC ballast for use with a high voltage discharge lamp comprising an inductor and a capacitor connected in series with the inductor, wherein the inductor and the capacitor are arranged to define an inductance-capacitance pair having an inductance and a capacitance selected in accordance with an inductance-capacitance relationship based on the following equations:
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20. A method of manufacturing a passive LC ballast for use with a high voltage discharge lamp, the method including providing the passive LC ballast with an inductance and a capacitance calculated using a non-linear model such that the lamp operates at a predetermined lamp power, the inductance and the capacitance thereby defining an inductance-capacitance pair;
- wherein the non-linear model is based on the following equations;
- wherein the non-linear model is based on the following equations;
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21. A passive LC ballast for use with any one of a plurality of high voltage discharge lamps each having a respective minimum lamp power and a respective maximum lamp power, the passive LC ballast having an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs, each inductance-capacitance pair defining a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with anyone of the lamps, the lamp operates between the respective minimum and maximum lamp powers of the lamp;
- wherein the selection of the inductance and the capacitance is based on the following equations;
- wherein the selection of the inductance and the capacitance is based on the following equations;
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22. A method of manufacturing a passive LC ballast for use with anyone of a plurality of high voltage discharge lamps each having a respective minimum lamp power and a respective maximum lamp power, the passive LC ballast having an inductance and a capacitance, and the method including providing a set of one or more inductance-capacitance pairs, each inductance-capacitance pair defining a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with anyone of the inductance-capacitance pairs and the passive LC ballast is used with anyone of the lamps, the lamp operates between the respective minimum and maximum lamp powers of the lamp;
- wherein the selection of the inductance and the capacitance is based on the following equations;
- wherein the selection of the inductance and the capacitance is based on the following equations;
Specification