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Class Information
Number: 307/26
Name: Electrical transmission or interconnection systems > Plural load circuit systems > Plural sources of supply > Diverse sources > Ac and dc
Description: Subject matter in which the two sources of supply are AC and DC sources.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8704403 Power generation system comprising a plurality of inverters Apr. 22, 2014
8603687 Fuel cell system Dec. 10, 2013
8575940 Power supply device and method for detecting non-contact state of load connected to power supply device Nov. 5, 2013
8476870 Method of diagnosing defective elements in a standalone system, powered by an intermittent power source Jul. 2, 2013
8441145 Modular power distribution system to drive DC and AC electrical loads, in particular for vehicle or domotics application May. 14, 2013
8344542 Apparatus and method to power 2-wire field devices, including HART, foundation fieldbus, and profibus PA, for configuration Jan. 1, 2013
8319651 Electronic device providing charge status Nov. 27, 2012
8270130 Device for sensing the functioning of an electrically powered device Sep. 18, 2012
8253271 Home power supply system Aug. 28, 2012
8212387 Connection module for providing N+N and M+1 redundant power distribution Jul. 3, 2012
8207628 Output power port management control Jun. 26, 2012
8164217 System and method for management of a DC and AC bus microgrid Apr. 24, 2012
8148846 Methods and apparatus for providing uninterruptible power Apr. 3, 2012
8138624 Conversion device for automobile Mar. 20, 2012
7944082 Connection module for providing N+N and M+1 redundant power distribution May. 17, 2011
7911187 Energy storage system Mar. 22, 2011
7781907 Image forming apparatus, image reading apparatus and complex machine Aug. 24, 2010
7763990 Hybrid green uninterruptible power system and bi-directional converter module and power conversion method thereof Jul. 27, 2010
7750501 System and method of over voltage control for a power system Jul. 6, 2010
7728456 Vehicle auxiliary electric-power-supplying system Jun. 1, 2010
7701082 Aerospace electrical power DC subsystem configuration using multi-functional DC/DC converter Apr. 20, 2010
7701083 Portable hybrid applications for AC/DC load sharing Apr. 20, 2010
7675194 Device for powering equipment, and an equipment power supply system Mar. 9, 2010
7615886 Electronic apparatus and computer-executable program Nov. 10, 2009
7502233 DC power supply using either AC or DC input for both Mar. 10, 2009
7439633 Power supply Oct. 21, 2008
7394168 Power system for a telecommunication facility Jul. 1, 2008
7250694 Power-saving control module for an electrical appliance Jul. 31, 2007
7230819 Mobile power system Jun. 12, 2007
7190091 Selectable source input power supply Mar. 13, 2007
7145265 AC/DC hybrid power system Dec. 5, 2006
6954008 Integrated power supply apparatus for information appliances Oct. 11, 2005
6765315 Bi-directional regulator/converter with buck/boost by fuzzy logic control Jul. 20, 2004
6744628 Multi-positionable power distribution unit Jun. 1, 2004
6483204 Power supply system with information exchange between plural loads and plural power sources Nov. 19, 2002
6201319 Uninterruptible power supply Mar. 13, 2001
5994795 Method and a system for electrically powering electronic equipment Nov. 30, 1999
5990577 Hub for local area network with backup power supply system Nov. 23, 1999
5982652 Method and apparatus for providing uninterruptible power using a power controller and a redundant power controller Nov. 9, 1999
5932934 Circuit for the infinite direct or indirect variation of the direct and/or alternating current flowing through a load operated by a mains DC or AC voltage or an arbitrary combination thereof Aug. 3, 1999
5917251 Method and circuit arrangement to cover peak energy demands in electrical alternating or three-phase current networks Jun. 29, 1999
5875106 Galvanic decoupling supply unit for an electric vehicle Feb. 23, 1999
5715156 Method and apparatus for providing AC or DC power for battery powered tools Feb. 3, 1998
5631504 AC/DC power supply May. 20, 1997
5608275 Fault tolerant isolation between devices powered by separate power sources Mar. 4, 1997
5514915 Shunt connected superconducting energy stabilizing system May. 7, 1996
5477091 High quality electrical power distribution system Dec. 19, 1995
5418403 System for conveniently providing load testing termination of an AC power source having at least one battery May. 23, 1995
5376828 Shunt connected superconducting energy stabilizing system Dec. 27, 1994
5283474 Circuit for driving a load by using selectively one of two different DC power sources Feb. 1, 1994

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