So the cascade multilevel inverters have been used in many industrial application fields such as fan or pump and the good saving-energy effect has been gotten.
Cascade Speed Control is a kind of reasonable scheme as fan and water pump etc.
对于风机、水泵类负载采用串级调速是一种合理的方案。
3
In conventional CMOS charge pump circuits, the pumping high voltage is limited by MOS threshold voltage, so that it can not use less cascade stages to pull up a high voltage which we want to generate.