A study of the efficiency of free charging space using a quick charger with charge limiting function

With the spread of smartphones there is a growing demand for free charging space. That the rotation rate is reduced by a long period of time of use. In the fixed time charging is that there may not be charged until the charging amount expected. Current decreases in accordance with the charge amount, charging at a constant voltage was noted that the charging time is prolonged. In this study using a microcomputer, we propose a system for blocking the power automatically according to the current change during charging smartphone.