| 晶体管单管放大电路实验中出现的问题及改进措施 |
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| 引用本文： | 宋俐荣,晏军.晶体管单管放大电路实验中出现的问题及改进措施[J].中国教育技术装备,2011(9). |
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| 作者姓名： | 宋俐荣 晏军 |
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| 作者单位： | 1. 四川邮电职业技术学院,成都,610067
2. 西华大学安德校区,成都,611732 |
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| 摘 要： | 在模拟电子技术的共射极单管放大电路实验中,出现与理论不相符的现象,在输入为正弦交流信号的情况下,输出端却观察不到同频率的放大的正弦交流信号,取而代之的是一调幅信号.通过对实验系统的观察分析,发现出现这种现象是因为实验板的较宽的铜箔导线之间存在分布电容.由此确定实验系统的改进措施,即在三极管的基极和射极之间加一电容,最终问题得以解决.
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| 关 键 词： | 正弦交流信号 铜箔导线 分布电容 自激振荡 |
Problems in Monotube Magnifying Experiment and Improvement Methods |
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| Song Lirong,Yan Jun.Problems in Monotube Magnifying Experiment and Improvement Methods[J].china educational technique & equipment,2011(9). |
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| Authors: | Song Lirong Yan Jun |
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| Institution: | Song Lirong,Yan Jun 1 Sichuan Post and Telecommunication College,Chengdu,China 610067 2 Xihua University at Ande,China 611732 |
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| Abstract: | The result of monotube magnifying experiment is not corresponding with the theory. When the sine alternating signal is input an amplitude modulation signal can be found instead of the magnified alternating signal with the same frequency. After systematic analysis of the experiment, the cause has been found, that is, the distributed electronic capacity between the copper wire in the experiment board. In order to solve the problem, an electronic capacity will be applied between the base and the emitter of a t... |
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| Keywords: | sine alternating signal copper wire distributed electronic capacity self-oscillation |
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