硅交流发电机在工程机械中,虽已得到了广泛的使用,但直流发电机的用量仍然很大。由于许多工程机械(如挖掘机、压路机、工程起重机等)电路较简单,因而,在充电电路中都没短路保护装置,故在配有蓄电池和直流发电机装置的机械上,有时因三联调节器(包括12伏和24伏)断电触点粘住,使蓄电池里电倒流至 Although the silicon alternator has been widely used in the construction machinery, the amount of the direct current generator is still large. Because many of the construction machinery (such as excavators, road rollers, construction cranes, etc.) have relatively simple circuits, there is no short-circuit protection device in the charging circuit. Therefore, in the machinery equipped with a battery and a DC generator device, sometimes due to the triple regulator (Including 12 volt and 24 volts) The power-off contact sticks, causing the battery to flow back to