| 功率测量的一种新方法 |
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| 引用本文： | 马文忠 杨艳. 功率测量的一种新方法[J]. 电子测量技术, 1997, 0(2): 31-33 |
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| 作者姓名： | 马文忠 杨艳 |
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| 作者单位： | 石油大学 华东 |
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| 摘 要： | 文中介绍一种新的功率测量方法，该方法不使用传统的互感器，而直接用运放和大电阻隔离，衰减信号。因此由此方法实现的功率表价格低，精度高，可准确测量较小的功率和功率因数。
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| 关 键 词： | 功率测量 单片机 运算放大器 |
The New Method for Measurement of Electrical Power |
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| Ma Wenzhong Yang Yan. The New Method for Measurement of Electrical Power[J]. Electronic Measurement Technology, 1997, 0(2): 31-33 |
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| Authors: | Ma Wenzhong Yang Yan |
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| Affiliation: | Ma Wenzhong Yang Yan |
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| Abstract: | In this paper,a new method for measurement power is intrduced. In the circuit,signal is directly isolated and attenuated by Op-amp and large resistance without using traditional transformer. As a result,the power instrument mads is low cost and high accuracy,and may be used to measure lower power as well as power factor. |
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| Keywords: | Power measurement Single-chip microprocessor Op-amp |
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