A circuit arrangement (100"; 100"'), in particular a driver circuit, for controlling at least one light-emitting component, embodied as at least one light-emitting diode or electroluminescent diode or as at least one semiconductor laser, wherein the circuit arrangement (100"; 100"') comprises: - at least two supply elements (10; 10') connected to one another in parallel, each embodied as a current source capacitively, in particular by means of at least one decoupling capacitor (12; 12'), supported on the output side, said supply elements (10; 10') provided for supplying the circuit arrangement (100"; 100"') with voltage, said supply elements (10; 10') connected to at least one supply voltage, in particular to at least one Thevenin voltage or to at least one voltage source, for example to at least one battery, and fed by the supply voltage, - at least one switching element connecting the output terminal of the first supply element to the input terminal of the light-emitting component and switchable at least between a first switching position and a second switching position, and - at least one transistor connected between at least one of the supply elements (10; 10') and the switching element, namely connecting the output terminal of the second supply element to the input terminal of the light-emitting component, - the drain terminal (D') of said transistor connected to the first supply element or to the second supply element, - the gate terminal (G') of said transistor connected to at least one supporting supply element, in particular to at least one supporting voltage source, and - the source terminal (S') of said transistor connected to the input terminal of the light-emitting component, so that the light-emitting component -- is supplyable with a first operating voltage in the first switching position of the switching element, said first operating voltage provided by the first supply element, -- is supplyable with a second operating voltage in the second switching position of the switching element, said second operating voltage provided by the second supply element, and -- is controllable by switching between the first operating voltage and the second operating voltage, characterized by at least one regulating and/or processing element, in particular by at least one comparator and/or by at least one amplifier, - the first input terminal of which is connected to the second supply element, in particular to the second current source capacitively supported on the output side, - the second input terminal of which is connected to at least one reference voltage source, and - the output terminal of which is connected to the supporting supply element. - at least two supply elements (10; 10') connected to one another in parallel, each embodied as a current source capacitively, in particular by means of at least one decoupling capacitor (12; 12'), supported on the output side, said supply elements (10; 10') provided for supplying the circuit arrangement (100"; 100"') with voltage, said supply elements (10; 10') connected to at least one supply voltage, in particular to at least one Thevenin voltage or to at least one voltage source, for example to at least one battery, and fed by the supply voltage, - at least one switching element connecting the output terminal of the first supply element to the input terminal of the light-emitting component and switchable at least between a first switching position and a second switching position, and - at least one transistor connected between at least one of the supply elements (10; 10') and the switching element, namely connecting the output terminal of the second supply element to the input terminal of the light-emitting component, - the drain terminal (D') of said transistor connected to the first supply element or to the second supply element, - the gate terminal (G') of said transistor connected to at least one supporting supply element, in particular to at least one supporting voltage source, and - the source terminal (S') of said transistor connected to the input terminal of the light-emitting component, -- is supplyable with a first operating voltage in the first switching position of the switching element, said first operating voltage provided by the first supply element, -- is supplyable with a second operating voltage in the second switching position of the switching element, said second operating voltage provided by the second supply element, and -- is controllable by switching between the first operating voltage and the second operating voltage, - the first input terminal of which is connected to the second supply element, in particular to the second current source capacitively supported on the output side, - the second input terminal of which is connected to at least one reference voltage source, and - the output terminal of which is connected to the supporting supply element.