A method for driving a power supply (84) of a magnetic field coil (85) for generating a predetermined magnetic field profile B(r,t) in the volume under investigation of a nuclear magnetic resonance (=NMR) apparatus (81), wherein for compensation of distortions caused by the apparatus, an input signal i(t) is predistorted, that predetermines the time behavior of the magnetic field profile, wherein the power supply (84) is driven by the predistorted signal o(t), is characterized in that the predistortion is performed using a transfer function of the form G ( s ) = O ( s ) I ( s ) = n = 0 N s n b n n = 0 N s n a n , with s=.sigma.+j.omega., s.epsilon.C, and with N.gtoreq.2, wherein O(s) is the Laplace transform of o(t), and I(s) is the Laplace transform of i(t). This inventive method improves compensation of distortions of one or more gradient fields including their correlations during rapid switching.