| 摘要 |
PROBLEM TO BE SOLVED: To provide a charger wherein a state in which the output of the charger is not connected with a battery is detected as no-load state and power consumption in standby state is reduced at no load. SOLUTION: The charger is so constructed that the following processing is carried out: DC power is pulse-converted by a main transistor and supplied to a switching transformer and thereby outputted to an output-side circuit portion; output current and output voltage are detected; the result of this detection is outputted to an output transmission circuit portion to control switching of the main transistor; and secondary-side output current and voltage are thereby controlled. This charger is provided with a load connection detecting means and an output voltage reducing means. Thus output voltage at no load is made lower than voltage at normal output and an electric circuit portion is installed on the secondary side. COPYRIGHT: (C)2009,JPO&INPIT
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