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DC/AC converter for a discharge lamp having a DC offset at the switching element to reduce power loss
DC/AC converter for a discharge lamp having a DC offset at the switching element to reduce power loss
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机译:用于放电灯的DC / AC转换器在开关元件上具有DC偏移以减少功率损耗
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摘要
A circuit arrangement including a DC/AC converter for operating a discharge lamp. The DC/AC converter includes input terminals for connection of the DC/AC converter to a DC voltage source, and a switching circuit connected to the input terminals and provided with at least one switching element. The switching element has a control electrode and a main electrode and a control circuit between the main electrode and the control electrode for generating a control signal for the switching element. The switching element is conductive when a voltage is present between the control electrode and the main electrode with a first polarity having a value which exceeds a threshold value. A load branch includes at least inductive means and output terminals for connection of the discharge lamp, which load branch is supplied via the switching circuit. The control circuit also generates a DC voltage component between the control electrode and the main electrode with a polarity which is opposed to the first polarity. The switching element has fast switching capability including short duty cycles.
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