CHARGING DEVICE FOR STANDBY POWER REDUCTION

摘要

PURPOSE: A charging device for reducing standby power is provided to reduce power loss by continuously checking a state of connection and charging voltage. CONSTITUTION: A switching power circuit(120) supplies a power source to a charger circuit. The charger circuit(130) monitors the charging voltage of a secondary battery and generates a control command. A control circuit(140) controls the operation of the switching power circuit. A charging circuit supplies charging current to the secondary battery. A switch control circuit controls a charge switch and a battery switch. [Reference numerals] (10) AC power source; (110) Starting circuit; (120) Switching power circuit; (130) Charger circuit; (140) Control circuit; (150) Photo coupler; (20) First rectifier circuit; (200) Secondary battery; (30) Insulation transformer; (40) Second rectifier circuit