Validation of a SPICE Model for High Frequency Electroporation Systems

In this paper, we present an analysis and a validation of a simulation program with integrated circuit emphasis (SPICE) model for a pulse forming circuit of a high frequency electroporation system, which can deliver square-wave sub-microsecond (100–900 ns) electric field pulses. The developed SPICE model is suggested for use in evaluation of transient processes that occur due to high frequency operations in prototype systems. A controlled crowbar circuit was implemented to support a variety of biological loads and to ensure a constant electric pulse rise and fall time during electroporation to be independent of the applied buffer bioimpedance. The SPICE model was validated via a comparison of the simulation and experimental results obtained from the already existing prototype system. The SPICE model results were in good agreement with the experimental results, and the model complexity was found to be sufficient for analysis of transient processes. As result, the proposed SPICE model can be useful for evaluation and compensation of transient processes in sub-microsecond pulsed power set-ups during the development of new prototypes.This article belongs to the Section Circuit and Signal Processin

Planar inductor for biological experimentation in pulsed magnetic fields

In this paper we present the novel design of the multilayer planar inductor for biological experimentation in pulsed magnetic fields. The presented planar inductor, together with developed high voltage generator, is capable to deliver 1T homogeneous magnetic fields in the volume of 17 µl with pulse repetition frequency up to 10 kHz. The finite element methods were applied to evaluate the magnetic field distribution and heat dissipation of proposed multilayer planar inductor under aluminium dioxide Al2O3 substrate. The computed and experimental results are presented as wel