DAM中波发射机记忆电路降耗方法实践

Reducing Memory Circuit of DAM MW Transmitter

中波广播发射台的播出自动化,让国产DAM中波发射机"播出参数"易失问题更显突出。为此,本文在分析研究国产DAM中波发射机相关电路基础上,通过比对原理图和电路板电路之异同,以及关键器件参数对比实验,查明了国产机"播出参数"易失原因,并针对问题,给出了一套切实可行的解决方案。最后,通过对几个厂家的设备改造前后数据对比,证实了该解决方案既能有效解决问题,又具有一定的普适性。

In the auto-broadcasting system of MW station, the broadcasting parameter losing problem of domestic DAM MW transmitter is becoming more and more prominent. This paper analyzes the differences of schematics and circuit boards, conducts experiments on the key device＇s parameter, in order to find the cause of broadcasting parameter losing. And then it proposes a workable solution. Finally, by comparing the data before and after the equipment reformation of several manufacturers, the proposed solution is proved to solve the problem efficiently and could be universally applied.