if an increase in speed is desired, the scr must be turned on to apply large pulses of instant power, and when lower speeds are desired, power is removed and a gradual coasting down in speed occurs.
在低转速下,窄脉沖的连续流需要保持一定速度。如果需要提升速度,scr必须打开以适应瞬间功率的大型脉沖;当需要低速运行时,电源被移除,速率逐步降低。