Patent ID: 6630817
Filing Date: 2003-10-07
Classification: G05F,H01F,H03F

Abstract:
An electrical circuit for converting an input voltage into an impressed electrical output variable, there being a predetermined relationship between input voltage and output variable, whereinthe circuit comprises a regulator with a first resistor connected to an output of the regulator, the regulator further comprises a desired value input and an actual value input, and the output serves for outputting the output variable, and wherein the input voltage (ue) is fed to the desired value input (5) of the regulator (4), a negative feedback voltage (ug) proportional to the output variable is fed to the actual value input (6) of the regulator (4), said negative feedback voltage being a measure of either of an output voltage or an output current of the output variable (ua, ia) of the circuit arrangement, during operation of the regulator for converting the input voltage (ue) into the output voltage (ua), the negative feedback voltage is proportional to the output voltage, and during operation of the regulator for converting the input voltage (ue) into an output current (ia), the negative feedback voltage is proportional to the output current and is obtained from a voltage dropped across the first resistor (8) through which the output current (ia) flows.