最近,在工作之余,翻阅“电工技术”八二年第七期。因关心节能技术,特对“节约照明用电的一种有效措施”一文进行了学习。觉得文章写得很好(在这里不对全文进行评论),值得一读,也可因地制宜地加以推广。在学习上文的第(iii)部分时(也是最常用的照明情况),发现原文有较大的错误,对电抗值的计算方法,给出了错误的计算公式。这使原文有些失色,也不便于推广,有必要指出原文之误,便于原文登载的技术推广应用. Recently, in his spare time, read the “Electrical Technology” August VII VII. Due to concerns about energy-saving technologies, special study on “saving lighting electricity is an effective measure ” was studied. I think the article is well written (not here to comment on the full text), is worth reading, but also can be popularized according to local conditions. When learning part (iii) of the previous section, which is also the most common lighting situation, I found that there was a major error in the original text and gave a wrong formula for calculating the reactance value. This makes the original somewhat faded, it is not easy to promote, it is necessary to point out the original text is wrong, easy to promote the application of the original technology.