倍频

Forerun always one step of its competitors on fabrication of coatings especially on laser system and infrared system.

滤光片；光纤薄膜……尤其在激光及倍频晶体、红外晶体，紫外波段镀膜方面，具备优势。

A quadrupler frequency circuit is applied to take advantage of the inherent resolution of encoders, and improve the counting precision effectively.

文章介绍了马丁代克的四倍频脉冲检测电路,用编码器的固有辨力,有提深度计数的精度。

Fireresistant Hall device and SmCo rotor is used to design position and speed sensor, and the corresponding doubling circuit and decoding circuit is designed.

采用的锁定型霍尔元件和钐钴永磁转子别构成位置与速度传感器，并设计相应的速度信号倍频电路与位置信号译码电路。