ELECTRONIC EQUIPMENT

PROBLEM TO BE SOLVED: To efficiently utilize an electric charge that is charged in a smooth capacitor of a power supply circuit in on state for supply of standby electric power in off state. SOLUTION: When electronic equipment 1 with the power supply in on state is put in off state, a part of the el...

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Hauptverfasser:	KAWAMURA KUNIO, TOMYO NARIHISA, TSUNODA KOICHI, SONODA TAKASHI, NAKAKO SHOHEI, SAITO SHINJI, OKADA YUJI, MORI KATSUYA, NISHIO AKINOBU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To efficiently utilize an electric charge that is charged in a smooth capacitor of a power supply circuit in on state for supply of standby electric power in off state. SOLUTION: When electronic equipment 1 with the power supply in on state is put in off state, a part of the electric charge remaining in the smooth capacitors 22, 29 of the power supply circuit 20 cut off from the power supply is charged from a step-down converter 50 to a power storage element 80 while a load switch 31 is opened and a load circuit 40 is cut off from the power supply circuit 20. At this time, a charge voltage of the power storage element 80 is made higher than that of the power storage element 80 in on state. COPYRIGHT: (C)2010,JPO&INPIT