讨论了低成本开关电源式大功率蓄电池充电机的工作原理，并给出了实用的电路原理图。
This paper discussed the principle of a great power battery charger using low cost switch power converter, the practical circuits are presented.
车灯开关开启时，蓄电池和前灯之间的电路接通。前灯的电路由脚踏选择开关来接通。
When the light switch is pulled out, the circuit from the Battery to the headlights is completed. This circuit is through the foot selector switch.
车灯开关开启时，蓄电池和前灯之间的电路接通。前灯的电路由脚踏选择开关来接通。
When the light switch is pulled out, the circuit from the Battery to the headlights is completed. This circuit is through the foot selector switch.
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