多波形极低频磁场产生装置的研制

Development of Multi-waveform Extremely Low Frequency Magnetic Field Generator

目的：研制一种主要用于研究极低频不同参量磁场生物效应的磁场产生装置。方法：考虑到用途和质价比，装置以ICL8038精密振荡集成块为核心，按照功能分为电源、信号产生、功率放大、电磁转换、参数显示和面板控制等6个部分。结果：装置可产生方波、三角波、锯齿波和正弦波形的磁场；输出电压为0-40V，输出电流为0-3A，磁场频率为0．1-300Hz。磁场幅值为0-0．1T。结论：通过具体应用表明，该装置设计合理、性能稳定、操作和控制方便，不但可作为磁场产生装置研究极低频不同参量磁场的生物效应．而且还可用于其他领域的相关研究。

Objective To develop a multi-waveform extremely low frequency magnetic field generator. Methods Considering of the usage and performance price ratio, the generator used ICL8038 precise concussion manifold block as the core part, and consisted of six parts for the power source, signal generation, power amplification, electromagnetic transform, parameter display and panel controlling. Results The generator could produce the field of square wave, triangular wave, sawtooth wave and sine wave, with the 0-40 V output voltage, 0-3 A output current, 0.1-300 Hz field frequency and 0-0.1 T field amplitude. Conchusion The muhi-waveform extremely low frequency magnetic field generator, with rational design, stable performance and convenient operation, can be applied in other research field.[Chinese Medical Equipment Journal,2012,33（9） ：9-10,20]