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.

中文翻译：

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一种多通道参数可调磁场发生器

为了提高磁场发生器的安全性和灵活性，本文设计并实现了一种多通道参数可调（MCPA）磁场发生器。介绍了 MCPA 磁场发生器的电路拓扑。分析了MCPA的工作原理。脉冲电流是通过实验测量和验证的。结果表明，脉冲电流幅值在1000 A以下可调，有效脉宽调节范围为0-160 µs，频率调节范围为1-10 Hz。当三个通道同时工作时，测量大脑头皮下方2.5厘米处的磁场强度。可以看出，中心区域的磁场强度明显高于周围区域。MCPA的通道也可以根据需要灵活选择。因此，它在生物磁疗领域具有很高的应用和研究价值。