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.
英
美
- 發(fā)動(dòng)機低速轉動(dòng)時(shí)需要連續的窄脈沖流維持速度。當需要提高速度時(shí)，必需開(kāi)啟SCR，產(chǎn)生瞬間大功率脈沖；當需要降低速度時(shí)，SCR會(huì )降低功率，從而逐漸降低速度。
