Abstract
This paper focuses of the trial production of a pulsing magnetic field generator for magnetic stimulations of organic tissues such as brain tumor cells (RGC-6). It consists of a combination of Helmholtz coils (radius: 20 cm, height: 27.5 cm, distance between coils: 6.5 cm) to generate the magnetic field, and a flip-flop-type electric circuit to generate the pulsing electric current controlled by switching of thyristors. This generator can supply a pulsing magnetic field of 10 mT at 200 Hz with a rise-time of 0.4 ms. The uniformity of the magnetic field distribution was within a maximum error of 5.8% in the 2400 cm3 region (20×20×6cm) between the Helmholtz coils.
