A Measurement System With Wide-Range High-Input Resistance and Float Input
There are two problems to be met often in the measure practice of AC and DC voltage, one is that the input resistance of the measurement circuit would divide the input source voltage measured. Another is the short circuit destruction and common-ground disturbance caused by the common-ground between the measurement circuit and the source voltage measured. Aiming at the two problems above, the authors had designed a floating ground measurement system with high-input resistance, which divide the ±1000V into four ranges and convert every range within the range of ±5V in order to meet the need of most of the A/D converters for input voltage range. The input resistance is greater than 10G ? when the input voltage is less than 50V and 1M ? the input voltage above 50V. There are wide applications in measurement and instruments, specially, in the design of signal acquisition units controlled by computer.
measurement high-input resistance float input wide-range
Zhu Changqing Ye Xiuxi Zhao Jincheng Shi YouRen
Mechanical Engineering College,Shijiazhuang 050003 China
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）