Method and circuit for power factor correction

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9166470
APP PUB NO 20120133285A1
SERIAL NO

13384117

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and circuit for correcting a power factor in an alternating current/direct current power transformer. The circuit has an inductor fed by a rectified AC voltage, and a switch by which the inductor can be charged and discharged by closing and opening the switch, and further has a diode by which the discharge current of the inductor is fed to the output of the circuit. During the discharge phase, a voltage corresponding to the output voltage is measured, and the measured values are stored. It is further determined when the discharge current reaches or crosses the zero line at the end of a discharge phase. Switch-on and switch-off signals for actuating the switch are generated by analyzing the information determined. The switch should not be switched on again until a particular minimum switch-off time has been reached.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TRIDONIC GMBH & CO KGDORNBIRN67

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kelly, Jamie Tyne and Wear, GB 8 30

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CIRRUS LOGIC, INC. (1)
* 2010/0328,976 CASCODE CONFIGURED SWITCHING USING AT LEAST ONE LOW BREAKDOWN VOLTAGE INTERNAL, INTEGRATED CIRCUIT SWITCH TO CONTROL AT LEAST ONE HIGH BREAKDOWN VOLTAGE EXTERNAL SWITCH 2 2009
 
MAXIM INTEGRATED PRODUCTS, INC. (1)
* 2010/0225,290 CRITICAL CONDUCTION RESONANT TRANSITION BOOST POWER CIRCUIT 7 2010
 
BENQ CORPORATION (1)
* 2008/0025,056 POWER FACTOR CORRECTION CIRCUITS 3 2007
* Cited By Examiner

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