摘要
文提出一种新颖的功率直接取样方法,取样电路仅由一只双运放、一只四比较器和一只模拟开关CD4053组成,该取样方法与3 1/2A/D转换器ICL7106配合可方便地组成高性价比的数字式功率因数表。
A new method of measuring power factor directly is given in the paper. The measurement circuit is composed with a dual op amp and a quad comparator and an analog switch CD4053. It is easy to constitute the digit power factor meter by using A/D converter ICL7106 and the measurement method coordinately.
