Power supply apparatus

Provided is a technology of detecting not only a main direct current voltage, but also a sub-direct current voltage, thereby contributing to protection of a main rectifying circuit and a sub-rectifying circuit. A main power supply circuit (119) drives a load (121). A main rectifying circuit (11) has...

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Bibliographische Detailangaben
Hauptverfasser:	IMOTO MITSURU, FUKADA KEISUKE, JOUTAKI KOUJI, SAKAE NORIO, TSUTSUI YASUYUKI, SHOUJI TETSUO
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION HEATING LIGHTING MECHANICAL ENGINEERING RANGES SYSTEMS FOR STORING ELECTRIC ENERGY VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a technology of detecting not only a main direct current voltage, but also a sub-direct current voltage, thereby contributing to protection of a main rectifying circuit and a sub-rectifying circuit. A main power supply circuit (119) drives a load (121). A main rectifying circuit (11) has an alternating current voltage inputted thereto via a first switch (102), and supplies a main direct current voltage (Vdc1) to the main power supply circuit (119). In the cases where an overcurrent is flowed to the main power supply circuit (119), or the load (121) is overload with respect to the main power supply circuit (119), the first switch (102) is shut. Operating power supply is supplied to the control circuit (123) from the sub-power supply circuit (117). A sub-rectifying circuit (12) bypasses the first switch (102), has the alternating current voltage inputted thereto, and supplies a sub-direct current voltage (Vdc2) to the sub- power supply circuit (117). A direct current voltage detecting circuit (13) detects the main direct current voltage (Vdc1) and the sub-direct current voltage (Vdc2).