POWER SUPPLY APPARATUS

Provided is a technique of detecting not only a main DC voltage but also an auxiliary DC voltage to protect a main rectifier circuit and an auxiliary rectifier circuit. A main power supply circuit (119) drives a load (121). A main rectifier circuit (11) receives an AC voltage through a first switch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	IMOTO MITSURU, FUKADA KEISUKE, JOUTAKI KOUJI, SAKAE NORIO, TSUTSUI YASUYUKI, SHOUJI TETSUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING 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 BLASTING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER 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 technique of detecting not only a main DC voltage but also an auxiliary DC voltage to protect a main rectifier circuit and an auxiliary rectifier circuit. A main power supply circuit (119) drives a load (121). A main rectifier circuit (11) receives an AC voltage through a first switch (102) to supply the main power supply circuit (119) with a main DC voltage (Vdc1). The first switch (102) is turned off when an overcurrent flows through the main power supply circuit (119) or the load (121) is an overload for the main power supply circuit (119). A control circuit (123) is supplied with operating power from an auxiliary power supply circuit (117). An auxiliary rectifier circuit (12) receives the AC voltage while bypassing the first switch (102) to supply the auxiliary power supply circuit (117) with an auxiliary DC voltage (Vdc2). A DC voltage detection circuit (13) detects the main DC voltage (Vdc1) and the auxiliary DC voltage (Vdc2).