研制开发了开关型三角波磁场扫描电源。改进后的扫描电源比原有电源的体积缩小近２０倍，重量减轻约１０倍。同时，扫描均匀度显著提高，且操作方便，能较好地抑制高频干扰，在防止高压打火引起仪器损坏方面效果明显，并增加了电源输出波形的显示功能。同时还探讨了扫描均匀度及保护电路的切换时间问题。 Developed the switch triangle wave magnetic field scanning power supply. Improved scanning power than the original power supply reduced by nearly 20 times the size, weight reduction of about 10 times. At the same time, the scanning uniformity is significantly improved, and the operation is convenient, the high-frequency interference can be well suppressed, the effect is obvious in preventing damage caused by high voltage ignition, and the display function of the power output waveform is increased. Also discussed scanning uniformity and protection circuit switching time.