Switching power supply for discharge lamp and method for powering a lamp
First Claim
1. A method for powering a discharge lamp with a switch mode power supply, comprising the steps:
- of applying a lamp startup voltage to the lamp;
after starting the lamp, of applying a service voltage lower than the startup voltage.
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Abstract
The invention concerns a method for powering a discharge lamp with a switching power supply. Said method is characterised in that it consists in: applying a voltage firing the lamp, then after the lamp has been energized, applying a lower service voltage to the firing voltage. The firing and service voltages ages can be generated by using a resonant circuit at the terminals of which a chopped voltage is applied with different frequencies. The invention also concerns a light source comprising a discharge lamp and a switching power supply. Said light source can be equipped with devices for measuring several parameters, such as power, light intensity or the amplitude of vibrations. The invention is useful for producing public lighting.
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Citations
14 Claims
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1. A method for powering a discharge lamp with a switch mode power supply, comprising the steps:
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of applying a lamp startup voltage to the lamp;
after starting the lamp, of applying a service voltage lower than the startup voltage. - View Dependent Claims (2, 3)
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4. A light source comprising:
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a discharge lamp;
a switch mode power supply powering the discharge lamp. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification