The invention relates to a compressor circuit for a pneumatic control device of a motor vehicle, including: a compressor, and a pressure regulator, the pressure regulator being arranged between an input side of the compressor and the pneumatic control device, wherein the pressure regulator is designed to measure an upstream pressure of air from the pneumatic control device present on its side facing the pneumatic control device and to supply this air at an input pressure to the input side of the compressor, the pressure regulator being designed to control the input pressure on the basis of said measurement.