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Backup power stage associated with a dual input power supply...

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Reexamination Certificate

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Ballast dimmer with passive power feedback control

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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Ballast shut-down circuit responsive to an unbalanced load condi

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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Ballast shut-down circuit responsive to an unbalanced load condi

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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Battery polarity switch for generating low frequency voltage wav

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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Bi-directional power supply circuit

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Reexamination Certificate

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Bridge type power converter with improved efficiency

Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent

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