Power supply apparatus for supplying various voltages and image forming apparatus operating on voltage supplied from power supply apparatus

A power supply apparatus generates an output voltage. A boost circuit boosts a voltage supplied from a reference voltage source and generates a first power supply voltage. A processor controls switching the boost circuit on and off. A first transistor is connected to the first power supply voltage....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Sugimoto, Shuichiro, Sakai, Masayuki, Sugiyama, Toshiaki
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 CINEMATOGRAPHY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY GENERATION HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	A power supply apparatus generates an output voltage. A boost circuit boosts a voltage supplied from a reference voltage source and generates a first power supply voltage. A processor controls switching the boost circuit on and off. A first transistor is connected to the first power supply voltage. A second transistor is connected to a collector of the first transistor. A resistance element is connected to a collector of the second transistor. A voltage source is connected to the resistance element and generates a second power supply voltage. A collector voltage, which is an output voltage, of the second transistor is controlled by controlling an amount of base current of the first transistor.