Overload protection arrangement for electronic converters, for instance for halogen lamps
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United States of America Patent
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-
Dec 2, 2008
Grant Date -
Sep 14, 2006
app pub date -
Feb 23, 2006
filing date -
Mar 9, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit arrangement for protecting an electronic converter against overloads includes: a low impedance path selectively activatable to prevent ignition of the electronic converter, the low impedance path including an electronic switch, a control capacitor whose charge voltage controls the electronic switch, whereby the electronic switch is activated to prevent ignition of the electronic converter when the charge voltage of the control capacitor is above a given threshold, a first generator for loading the control capacitor, the first generator activatable in the presence of a first overload condition of the electronic converter, and a second generator for further loading the control capacitor, the second generator activatable in the presence of a second overload condition of the electronic converter, the second overload condition being heavier than the first overload condition.
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