Lamp operating circuit and operating method for a lamp having active current measurement
The invention relates to a circuit and to a method for operating a lamp. In this case, a reactance for the purpose of detecting the lamp voltage, a zero point detection device for the purpose of determining the zero crossing of the current through the reactance and a current measuring device and, fi...
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Main Author | |
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Format | Patent |
Language | English |
Published |
17.07.2007
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Online Access | Get full text |
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Summary: | The invention relates to a circuit and to a method for operating a lamp. In this case, a reactance for the purpose of detecting the lamp voltage, a zero point detection device for the purpose of determining the zero crossing of the current through the reactance and a current measuring device and, finally, a track-and-hold circuit triggered by the zero point detection device are used to measure the lamp current in such a way that the influence of parasitic capacitances is still ruled out. |
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