摘要
介绍了用直流电压源和锰铜压力计测量压力的一种方法。该方法的测量电路非常简单，便于匹配，与以往传统的脉冲电源供电的测量方法相比，不仅可省去触发系统，而且由于流过压力计的电流很小（约20mA），所产生的派生磁场对样品和飞片的磁化作用减少了两个数量级以上。同时此法也是一种低成本的压力测量方法。
A method for manganin piezoresistance measurement that uses a d. c. power supply is described. This technique is very simple and easy to match. Compared with the conventional technique which uses pulse power supply, it not only omits the trigger system, but also can reduce the electromagnetic disturbance which is caused by the magnetic field derived from the current traversing in the gauge, because the current flowing over the gauge is very weak(about 20mA). Furthermore, the technique is also a low cost method for dynamic pressure measurement.
出处
《高压物理学报》
CAS
CSCD
北大核心
1998年第3期236-240,共5页
Chinese Journal of High Pressure Physics
关键词
锰铜压力计
压力测量
直流电压源
脉冲电源
manganin stress gauge, stress measurement, d. c. power supply, pulse power supply.
