The rotation speed falls below the forced commutation frequency.
旋转速度低于强制换向频率。
Each period of DC excitation and forced commutation drives is set with an external capacitor.
直流励磁时间和强制换向时间都由一个外部电容设定。
The duty cycles for DC excitation and forced commutation modes are determined according to the SC pin voltage.
直流励磁和强制 换向模式的占空比根据引脚 SC 的电压确定。
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