A new device which can change the optical frequency shift is described. It consists of a rotating grating, a synchro motor and a power supply whose frequency can be adjusted.
本文描述一台能改变光频移频率的新装置，它由旋转光栅、同步电机和调频电源组成。
2
The paper presents a kind of circuit to solve the starting of the high capacity synchro motor, and introduces the formation of the starting device and th…
本文介绍了一种解决大型同步电动机起动的电路，详细介绍了起动装置的组成以及起动过程实现。
3
Known well the structure and work theory of high speed synchro data acquisition device.