Abstract
In order to increase the security and flexibility of the magnetic field generator, a multi-channel parameters adjustable (MCPA) magnetic field generator is designed and implemented in this paper. The circuit topology of the MCPA magnetic field generator is presented. The working principle of MCPA is analyzed. The pulse current is measured and verified by experiments. The results show that the pulsed current amplitude is adjustable under 1000 A, the adjustment range of the effective pulse width is 0-160 µs, and the adjustment range of the frequency is 1-10 Hz. The magnetic field intensity at 2.5 cm below the scalp of the brain was measured when the three channels were working at the same time. It can be seen that the intensity of the magnetic field in the central area is apparently higher than that in the surrounding. The channels of MCPA can also be chosen flexibly as needed. Therefore, it has a very high application and research value in the field of biological magnetism therapy.
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