| 铜金属变温四端电阻实验仪 |
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| 引用本文： | 魏国瑞,张建国,李隆.铜金属变温四端电阻实验仪[J].大学物理实验,2005,18(3):49-50. |
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| 作者姓名： | 魏国瑞 张建国 李隆 |
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| 作者单位： | 西安建筑科技大学,西安,710055;西安建筑科技大学,西安,710055;西安建筑科技大学,西安,710055 |
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| 摘 要： | 本文首次使用了数显温度可控的功率电阻作为铜金属丝的加热源,在实验中采用了双臂电桥、铜金属丝的四端电阻接线方式,不仅实现了铜金属丝的温度可控性和实时测量性,而且将铜金属温度系数的测量精度提高到3%以内.
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| 关 键 词： | 温度系数 四端电阻 双臂电桥 温度控制数字显示仪 |
| 文章编号： | 1007-2934(2005)03-0049-02 |
| 收稿时间： | 02 20 2005 12:00AM |
| 修稿时间： | 2005年2月20日 |
TEMPERATURE CONTROL QUADRUPLET RESISTANCE INSTRUMENT OF COPPER WIRE |
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| Wei Guorui,Zhang Jianguo,Li Long.TEMPERATURE CONTROL QUADRUPLET RESISTANCE INSTRUMENT OF COPPER WIRE[J].Physical Experiment of College,2005,18(3):49-50. |
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| Authors: | Wei Guorui Zhang Jianguo Li Long |
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| Abstract: | In this paper the heating source.of copper wire is fast used as the power resistor controlled by temperature control digital indicator. In this experiment the double bridge and quadruplet resistance of wire are obtained. Not only temperature of copper wire is controlled and real - time measured, but also the measuring accuracy of coefficient of copper wire is improved by 3 %. |
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| Keywords: | temperature coefficient quadruplet resistance double bridge temperature control digital indicator |
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