Electronic Ballast and Method for Controlling a Load

Abstract

Electronic ballast for controlling at least one load, for example a lamp such as an LED, a fluorescent lamp, a gas discharge lamp or the like, comprising at least one resonant converter for generating a start and/or operating voltage from a rectified mains voltage of a mains voltage supply and comprising a mains rectifier for rectifying the mains voltage, where the electronic ballast has an electronic switching device that switches off the mains voltage supply in the event of emergency lighting, an emergency voltage can be fed into the electronic ballast, and different voltages can be determined and/or operating frequencies of the electronic ballast can be adjusted by way of an intermediate voltage circuit and/or an operating frequency circuit.

Dependencies are inferred from the claim text.