以igbt为主开关元件的高频开关电路，由TL 494控制的集成专用驱动器exb840驱动。
The high frequency switch circuit taking IGBT as main switch component are driven by the special purpose driver EXB840 controlled by TL494.
采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。
The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.
电子雕刻系统采用高频电—机械转换器作为记录元件，常用的光栅图像处理器不能适用。
Electronic engraving system USES electromechanical converter as its record component, therefore, the conventional Raster Image Processor are not suitable for the electronic engraving system.
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