本文介绍武汉华中工学院与武汉三五仪表厂横向联合研制的新产品,用微机严格控制可控硅的导通角从而控制退磁线圈中电流的大小。装置具有功能多样、操作简便并能记忆最佳退磁电流与时间的函数关系,使退磁过程具有可靠的重复性和再现性,大大提高了退磁机的功能和效率。 This article introduces Wuhan Huazhong Institute of Technology and Wuhan thirty - five instrument factory horizontal joint development of new products, the microcomputer control of silicon conduction angle to control the size of the current in the demagnetization coil. The device is versatile, easy to operate and capable of memorizing the optimal demagnetization current as a function of time, providing reliable repeatability and reproducibility of the demagnetization process and greatly improving the functionality and efficiency of the demagnetizer.