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从1975年9月、我厂、校联合试制五对极磁铁抹音头。到1975年底,初步拿出了样品。在华主席为首的党中央粉碎“四人邦”以后,形势大好,为了落实华主席抓纲治国的战略部署,结合具体任务,我们重新积极开展了抹音头的试制工作。经多次改进,到1977年五月初步试制成功六对极磁铁抹音头。多极磁铁抹音头,又称复合磁铁抹音头。抹音头在录音机中的作用主要是抹掉磁带上不再需要的讯号,而对必须保留的讯号(包括被抹部分的前后及相邻磁迹的讯号)毫无影响,并且被抹部分也不应带来附加杂音。大家知道,抹音头分三类:①交流抹音头,②直流抹音头,③磁铁抹音头。
From September 1975, I plant, school trial production of five pairs of magnet eraser head. By the end of 1975, samples were initially taken out. After the smashing of the “gang of four” by the party Central Committee headed by Chairman Hua, the situation was fantastic. In order to implement Chairman Hua’s strategic plan of governing the country with the rule of law and the specific tasks, we re-actively carried out the trial production of the ebony head. After several improvements, to May 1977 a preliminary trial of successful six pairs of magnet wiped sound head. Multi-pole magnet wipe head, also known as composite magnet wipe head. The function of the wiping head in the recorder is to erase the signals that are no longer needed on the tape and have no effect on the signals that must be retained, including the signals of the fore, aft and adjacent tracks of the wiped part, Should not bring additional noise. We all know, wiping the first divided into three categories: ① exchange wiping head, ② wipe the head, ③ wipe the magnet head.