Introducing the principle, construction and technological parameters of machine tool changement. This paper calculates some design data such as electro-magnetic inductioncircuit and coil.
介绍机床改装原理、结构和技术参数，对电磁感应器磁路及电磁线圈参数进行了有关的计算。
2
The principle of main parameter of the with the change of source frequency were given on the base of analyzing the equivalent circuit of induction motor.
在感应电动机等效电路的基础上，分析了当电源频率发生改变时，等值电路中主要参数的变化规律。
3
Electromagnetic induction: when a conductor of a closed electric circuit move cutting the magnetic induction lines, the conductor produces current.