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自从本刊在1999年第1期上发表肖为民同志的《最新型开关电源集成电路TOP212YA1在松正VCD机应用的剖析和检修》一文后,收到毛恩忠、李明庭等同志的来信、来稿,并提出质疑。毛恩忠说:“…使K端电压降低,IC2②脚电压降低(怎么会升高呢?)”。为了搞清问题,我们与本文作者肖为民取得联系,他作了相应的修改和补充。在此,与李明庭文章一同发表,欢迎读者批评指正!
Since the publication of the first issue in 1999, Comrade Xiao Weimin, Comrade Xiao Weimin, “the latest switching power supply integrated circuit TOP212YA1 in Songzheng VCD machine application analysis and repair” one article, received Mao Ezhong, Li Mingting and other comrades letter, draft, and put forward question. Mao Enzhong said: “... so that K-side voltage drop, IC2 ② foot voltage reduction (how can it rise?).” In order to find out the problem, we get in touch with author Xiao Weimin, he made the corresponding modification and supplement. Here, with the article written by Li Mingting, readers are welcome criticism!