摘要
采用单片机 80 31模拟三角波输出而产生超低频扫场电源 ,克服阻容元件线差波形不稳定 ,用 8位单片机与 16位数模转换器进行接口 ,给出了控制系统、D/A转换、恒流和功率驱动电路以及软件设计 ,以四探针、六探针法测量 。
The ultraflow frequency scanning field power supply is obtained by chip microprocessors 8031 simulating trangular wave output.The problem of the unstablity of wire difference and waveform of resistance capacipy element is solved,chip microprocessor of 8 units and the data mode converter of 16 units are used to make the interface,the contral system,D/A conversion,the constant-rate of flow,the power driving electric circuit and the software design are provided.The thin film magnetic-resistance effect is measured automatically by four probes and six probes measure methods.
出处
《济南大学学报（自然科学版）》
CAS
2002年第2期200-202,共3页
Journal of University of Jinan(Science and Technology)
基金
河南省教育厅科研项目 (编号 :2 0 0 0 14 0 0 0 8)
关键词
薄膜磁阻效应
探针
单片机
thin film magnetic-resistance effect
probe
chip microprocessors
