POWER SUPPLY UNIT

PROBLEM TO BE SOLVED: To miniaturize a power supply unit and reduce its cost by suppressing the variation of an output voltage small without using a current transformer and a shunt resistor. SOLUTION: The power supply unit is provided with an error amplifier 13 for outputting a signal proportional t...

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Bibliographische Detailangaben
Hauptverfasser:	MINO KAZUAKI, ISHIKAWA NORIAKI
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To miniaturize a power supply unit and reduce its cost by suppressing the variation of an output voltage small without using a current transformer and a shunt resistor. SOLUTION: The power supply unit is provided with an error amplifier 13 for outputting a signal proportional to a difference between a voltage value obtained by dividing an output voltage at an intermediate point between a first resistor 10 connected to the positive side of the output voltage and a second resistor 11 connected to the negative side of the output voltage, and a command value; and a controller 15 for ensuring that the output voltage may be an output voltage following the command value by giving an output signal of the error amplifier 13 to a switching element 16. With this configuration, a gain of the error amplifier 13 can be controlled in accordance with the output voltage. COPYRIGHT: (C)2009,JPO&INPIT