对无传感器无刷直流电机的驱动系统进行了研究，详细论述了开关电容低通滤波器的设计方法。
In this paper a driving system with sensorless and brushless DC motor is studied, the lowpass design method for switching capacitor is discussed in detail.
探讨了任意无源二端电容网络等效电容的一般计算方法。
The general calculation method of equivalent capacitance of arbitrary passive two-end capacitance has been studied.
针对目前片式电容器生产厂无大容量高温浪涌与老化试验同时进行的设备现状，设计并实现了以89c52单片机为核心的智能化高温浪涌测试与老化试验系统。
In the light of no integrated surging and burn-in test system at high temperature for slice capacitor, a smart test system based on 89c52 core is developed.
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