Method for operating a lamp and electronic ballast

摘要: The invention relates to an electronic ballast having interface input connections (E1, E2) which impedance can be connected, wherein the circuit configuration is able, due variability of a frequency, capture measurement values from resistance and capacitance elements simultaneously connected (E1 derived. Using both said derived parameters, other parameters determined, particularly two items information transmitted ballast. An item preferably dimming duration, namely duration for lamp operated in mode.