TRANSLESS CIRCUIT FOR CONTROLLING CHARGING AND DISCHARGING BATTERY

摘要

PURPOSE: A transless battery charging and discharging control circuit is provided to improve the lifetime of a battery by stably controlling a transient current and a reverse current due to the instability of applied AC power. CONSTITUTION: A power source(100) receives AC from the outside and provides the AC to a circuit. A switching unit(200) supplies or blocks the AC. A protection unit(300) protects a circuit. A conversion unit(400) converts the AC into DC for driving the circuit by rectification. A constant voltage control unit(500) outputs a stably constant voltage by controlling the charging and discharging of a capacitor.