| 无线听音系统在外语教学中的应用 |
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| 引用本文： | 郑嘉琦.无线听音系统在外语教学中的应用[J].华中科技大学学报(医学版),1993(6). |
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| 作者姓名： | 郑嘉琦 |
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| 作者单位： | 同济医科大学外语培训部外语教研室 武汉 |
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| 摘 要： | 无线听音系统的实质就是工作在音频频率的无线广播通信,由于幅射效率低,故具有以幅射范围可控性好为主的多项优点。起初用于外语教学时,曾出现发送机末级功率放大管易损坏的故障,经分析,确认是由于幅射导线长而呈现的引线电感导致无功功率反射所造成,为此引入调谐电容使幅射电路串联谐振,较好地克服了这一不可靠因素。通过实验,描绘了输出功率与负载电阻的关系曲线,为今后正确选择幅射导线提供依据。
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| 关 键 词： | 电化教学 外语教学 电磁感应 串联谐振 |
Application and Improvement of the Wireless Sound-hearing System for Foreign Language Teaching in Our University |
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| Zheng Jiaqi.Application and Improvement of the Wireless Sound-hearing System for Foreign Language Teaching in Our University[J].Journal of Huazhong University of Science and Technology(Health Sciences),1993(6). |
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| Authors: | Zheng Jiaqi |
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| Institution: | Zheng Jiaqi Department of Foreign Languages,Tongji Medical University,Wuhan 430030 |
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| Abstract: | This paper discussed the essence of the wireless soundhearing system and the application of this system in foreign language teaching in our university. In particular it made some necessary comments on improvement of the system. The author put forward his own opinions for further perfection. |
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| Keywords: | audio-visual education program foreign language teaching electromagnetic induction series resonance |
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