Power supply unit

A power supply unit includes a main power-supply circuit and a secondary power-supply circuit which are connected to an alternating current power supply AC. The main power-supply circuit includes a full-wave rectifier and an input current control circuit corresponding to a harmonic current suppressi...

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Bibliographic Details
Main Authors UNO YOSHIYUKI, NISHIDA AKIO, TAKEMURA HIROSHI
Format Patent
LanguageEnglish
Published 18.05.2010
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONTROLLING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
SYSTEMS FOR STORING ELECTRIC ENERGY
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Summary:A power supply unit includes a main power-supply circuit and a secondary power-supply circuit which are connected to an alternating current power supply AC. The main power-supply circuit includes a full-wave rectifier and an input current control circuit corresponding to a harmonic current suppression circuit. The input current control circuit includes a resistor as circuit current detection element and a control circuit for controlling a switch element by detecting a current flowing in the resistor. A connection is provided such that a current flowing in a diode as a second rectifying circuit of the secondary power-supply circuit may return to the alternating current power supply through the resistor.
Bibliography:Application Number: US20050595276