经反复实验,我制作的快速高效充电机最实用于电压不稳的地方使用。即使当地电压低至180V或高于240V电压,均可正常充电,而且充电电流大。正常充电电流可在6～20A内。此快速高效充电机制做成本低,大概30元左右。用途多,可充电池、电瓶,也可当可调电源使用,当录音机、收音机的电源。具体做法见 After repeated experiments, I made the most efficient and efficient charger for the use of voltage instability place. Even if the local voltage as low as 180V or 240V voltage, can be normal charge, and the charging current. Normal charge current can be within 6 ~ 20A. This fast and efficient charging mechanism to do low cost, about 30 yuan. Use more, rechargeable batteries, batteries, but also can be used as an adjustable power supply, when the recorder, radio power. See specific ways