| 指针式万用表保护电路的改进 |
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| 引用本文： | 吴怀选.指针式万用表保护电路的改进[J].长春师范学院学报,2007,26(1):39-41. |
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| 作者姓名： | 吴怀选 |
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| 作者单位： | 广东药学院基础学院,广东广州510006 |
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| 摘 要： | 在万用电表实验中,学生往往做出不当的操作,严重时产生烧毁万用电表内部电路电阻的现象。文章分析了可能出现烧毁电表电阻的各种情况,并在理论分析的基础上有目的地设计了相应的保护电路,有效地保护了万用电表,提高了学生实验的保障性。
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| 关 键 词： | 万用表 保护电路设计 可控硅 |
| 文章编号： | 1008-178X（2007）01-0039-03 |
| 修稿时间： | 2006-10-12 |
Amelioration of Pointer Multimeter Protecting Circuit |
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| WU Huai-xuan.Amelioration of Pointer Multimeter Protecting Circuit[J].Journal of Changchun Teachers College,2007,26(1):39-41. |
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| Authors: | WU Huai-xuan |
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| Institution: | Foundation College, Guangdong College of Pharmacy, Guangzhou 510006, China |
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| Abstract: | In the experiment of multimeter,much mistaken action were taken by some students.At last,some resistances in the circuit of multimeter were destroyed by large current or large voltage.Each of mistaken action was analyzed in the paper.Based on the theory,we designed the corresponding circuit to protect multimeter.These measures upheld our students' experiment largely. |
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| Keywords: | multimeter protecting circuit designed controlled silicon |
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