K Rosseel et al 2003 Meas. Sci. Technol. 14 1075 doi:10.1088/0957-0233/14/7/324
K Rosseel1, W Boon and F Herlach
Show affiliationsTwo special design features of capacitor banks for driving pulsed magnets are proposed; these are dimensioned by Laplace transforms. The stray capacitance and the inductance of the wiring can result in sharp voltage pulses with amplitude of up to twice the initial charging voltage. A simple RC filter is designed which efficiently suppresses these overvoltages. The second feature is a circuit that modifies the pulse shape in order to facilitate magnetization measurements on superconducting samples where the magnetic response not only depends on the field but also on the rate of the field sweep. This is achieved by adding a suitable combination of inductors and capacitors to the capacitor bank circuit.
84.60.Ve Energy storage systems, including capacitor banks
84.30.Sk Pulse and digital circuits
07.55.Jg Magnetometers for susceptibility, magnetic moment, and magnetization measurements
Issue 7 (July 2003)
Received 21 March 2003, accepted for publication 14 May 2003
Published 17 June 2003
K Rosseel et al 2003 Meas. Sci. Technol. 14 1075
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