Ballast device for uv radiator and also method and device for disinfecting water
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United States of America Patent
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Jun 14, 2005
Grant Date -
Jul 17, 2003
app pub date -
Mar 21, 2002
filing date -
Mar 21, 2001
priority date (Note) -
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Abstract
The invention relates to a novel ballast device for pre-heating, starting and operating at least one UV emitter, constructed in the form of a gas discharge lamp with two heating coils lying opposite each other in relation to a gas discharge path, whereby four electrical connections are provided in total for each of such gas discharge paths, namely two for each heating coil. According to the invention, switching means are provided for a parallel switching of both of said connectors of a heating coil, dependent upon operating conditions. A capacitive loading of the ballast device is thus avoided by means of the otherwise open connector line for the heating coil and the current feed to the coils is evenly distributed.
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