Power Regulator

A power regulator has an input terminal arranged to receive an input voltage, an output terminal arranged to output an output voltage, a transistor connected to the input terminal and to the output terminal, a feedback terminal arranged to receive a feedback voltage having a predetermined relationsh...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Yasusaka Makoto, Jin Zhencheng
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 CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	A power regulator has an input terminal arranged to receive an input voltage, an output terminal arranged to output an output voltage, a transistor connected to the input terminal and to the output terminal, a feedback terminal arranged to receive a feedback voltage having a predetermined relationship with the output voltage, a control circuit configured to control the transistor based on the feedback voltage at the feedback terminal and a reference voltage so as to keep the output voltage constant (equal to a first voltage), and an open detection circuit configured to detect an open state of the feedback terminal and, on detecting the open state, to vary the reference voltage and thereby keep the transistor in an OFF state (or a voltage holding circuit configured to hold the output voltage constant at a second voltage lower than the first voltage when the feedback terminal is in an open state).