| 摘要 |
The invention relates to a circuit arrangement with a regulating circuit which is particularly used for regulating a resonant converter having a plurality of outputs. To provide a circuit arrangement comprising a regulating circuit for converters having a plurality of outputs, which arrangement comprises a protective circuit that can be constructed with the least possible circuitry and cost, which protective circuit reliably protects against cases of overload, it is proposed that the regulating circuit is used for generating a pulse-width modulated regulation signal (20) in dependence on measuring signals (Va, Vb) present on inputs of the regulating circuit (20), and including a comparator circuit (212) for comparing the duty cycle (delta) of the regulation signal (20) with a predefinable maximum duty cycle value (deltamax) and minimum duty cycle value (deltamin), in which in case of a duty cycle (delta) situated outside the range between the maximum duty cycle value (deltamax) and the minimum duty cycle value (deltamin) the circuit arrangement delivers control information that corresponds to this exceeding of the range.
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