Highfrequency pulse width modulation power control systems can be realized using semiconductor switches.
高频脉冲宽度调制电力控制系统,可以实现用半导体开关。
2
The practice showed that great technical and economic effects had been produced in energy-saving and environmental protection after using high voltage frequencycontrol in mixer fan of steelworks.
实践证明,炼钢混铁炉风机电机应用高压变频控制后在节能、环保等方面取得了较好的技术与经济效果。
3
What should be considered for optional highfrequency impedance control?