给出了电视信号与电源的函数同步驱动脉冲的时间定位关系式，设计了电光电视函数同步装置。
The relation between the setting time of the driving pulse of function synchronization and the power source of bulbs is given and a function synchronizing device is designed.
无刷直流永磁电机的电源虽是直流电，但其内部绕组中的电流仍是交流电，其旋转部分犹如同步电机的磁极转子，其结构及电磁原理与同步电机相似。
With the power being DC, the current of inner winding of the magneto is AC, and the rotating part is just similar to the magnetic rotor of synchronous dynamo.
与传统的晶闸管励磁电源相比，新型同步电机励磁电源的性能得到很大提高，使用简便可靠，是一种较好的同步电机励磁选择方案。
Comparing with the old type exciter, the new one has many advantages and can be used easily, it is suitable for the practical engineering.
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