| 一种工业用高频抗杂散小电容测量电路 |
| |
| 引用本文： | 郭红星 屠忠遂. 一种工业用高频抗杂散小电容测量电路[J]. 电子测量技术, 1998, 0(3): 5-8 |
| |
| 作者姓名： | 郭红星 屠忠遂 |
| |
| 作者单位： | 武汉大学电子信息学院，武汉大学电子信息学院，武汉大学电子信息学院 |
| |
| 基金项目： | 国家自然科学基金，广东省自然科学基金 |
| |
| 摘 要： | 介绍了一种工业用高频抗杂散小电容测量电路。该电路基于电荷转换原理，并采用差分结构产生输出信号。它有直至几兆赫兹的可编程测量频率。廉价且易于单片集成。通过采用特殊的开关安排，可以消除包括开关元件在内的杂散电容的影响，使得测量电路具有好的稳定性和线性衣０．３ｐＦ的分辨率。
|
| 关 键 词： | 电容测量 电路设计 电荷转换原理 |
A High Frequency Stray-Immune Transducer for Industrial Measurement of Value Capacitances |
| |
| Guo Hongxing Tu Zhongsui Bao Zongti. A High Frequency Stray-Immune Transducer for Industrial Measurement of Value Capacitances[J]. Electronic Measurement Technology, 1998, 0(3): 5-8 |
| |
| Authors: | Guo Hongxing Tu Zhongsui Bao Zongti |
| |
| Affiliation: | Guo Hongxing Tu Zhongsui Bao Zongti |
| |
| Abstract: | A high frequency stray-immune transducer for industrial measurement of low value capacitances is described. It is based on the charge transfer principle and uses a differential structure to generate the output signal. It has a programmable measurement frequency up to several megahertz and is inexpensive and suitable for integration onto a single chip. The effects of stray capacitances,including those of the switching components,have been eliminated by using a special switching arrangement,resulting in good stability and linearity,and a resolution of 0. 3pF. |
| |
| Keywords: | Capacitance measurement circuit design charge transfer principle |
| 本文献已被 CNKI 维普 等数据库收录！ |
