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Uninterruptable capability for an active power line conditioner

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent

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Uninterrupted power supply and the method for driving its...

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate

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Uninterrupted power supply system having improved power factor c

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent

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Unity power factor power supply for use with variable frequency

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent

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Universal power supply for arc welder

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent

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Unregulated isolated DC/DC converter with ripple control

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate

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Unregulated isolated DC/DC converter with ripple control

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate

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UPS with current waveshape circuit

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate

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Utility current feedback filter with pulse-width modulated power

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent

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