自制恒流电源及在物理实验中的应用

THE APPLICATION OF A CONSTANT CURRENT FLOW SOURCE BY HAND IN PHYSICAL EXPERIMENT

研制了一种物理实验专用的励磁电流恒流电源,对恒流电源的电流输出稳定性进行了测试,并以恒流电源在霍尔元件测磁场实验中的应用为例,进行了普通稳压电源和但流电源两种电源的实验数据对比测试。测试结果表明,电流输出稳定度可达到0.1%,恒流电源所测数据的线性化程度高于普通稳压电源所测数据。

A current constant flow source in use for magnet exciting current in the stability physical experiment was developed.The current intensity stability of the source was surveyed. The current intensity stability change was only 0. 1 percent in the experiment of surveying magnetic field intensity by Hall element. The current constant flow source is well as compared with the general source in the physical experiment.