说明：  基于AT89C52的功率因数调整器是用于电力行业配电变压器用户侧无功补偿装置中的控制仪表，用于自动调整功率因数，使功率因数达到电力行业规定要求。
(AT89C52-based power factor regulator for the power industry, the user side of distribution transformers and reactive power compensation device in the control instruments used to automatically adjust the power factor, so that power factor to the provisions of the power industry requirements.)