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近两年冶金施工企业、矿山从苏联进口的克拉斯256Б型自卸汽车的数量颇大,充电系统采用47A28V交流硅整流发电机,及与其相配的PPll3702型晶体管电压调节器。其特点是灵敏度高,耗电量少。它采用印刷电路底板,整理后的工作原理如附图。调节器是通过控制发电机励磁线圈的励磁电流来稳定电压的,即采用断续接通和断开励磁线圈电路的方法,使发电机在高、中转速下都能稳定在27.6—29V电压下向蓄电池充电。
In the past two years, metallurgical construction enterprises, mines imported from the Soviet Union, Klas 256bd dump truck is quite large, the charging system uses 47A28V AC silicon rectifier generator, and its matching PPll3702 transistor voltage regulator. It is characterized by high sensitivity, low power consumption. It uses the printed circuit board, finishing the working principle as shown in the drawings. The regulator controls the excitation current of the generator excitation coil to stabilize the voltage, that is, the method of intermittently connecting and disconnecting the excitation coil circuit enables the generator to be stable at 27.6-29V under both high and medium speed Charge the battery.