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超外差式收音机的电路仿真

Sheng-tong FENG,Li-qun GUO, Dong LIU,Guang YANG,Bo WU

Journal of Electrical & Electronic Education（2016）

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Abstract
为了提高超外差式收音机原理的教学效果,把Multisim引入课堂.首先,利用Multisim创建了振荡线圈和中周模型.在此基础上,再将收音机的工作过程进行完整地仿真,着重分析了本机振荡、变频以及经过三级中周选频放大后的信号.教学实践表明,这一措施有助于学生理解收音机基本原理,提高了学习兴趣,并对收音机的检测和维修有很好地指导作用.
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