ST. LOUIS – Two St. Louis men have been charged with stealing a transformer and utility wiring in the aftermath of the May 16 tornado. According to a St. Louis Metropolitan Police Department ...

Abstract: A family of double-conversion three-phase uninterruptible power systems with power factor correction and high-frequency transformer (HFT) isolation topologies are presented in this paper.

Abstract: This paper proposes an isolated double-conversion uninterruptible power system with power factor correction using a high-frequency transformer and with input voltages equal to 110 V/220 V.

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Inductive effects of lighting including transients, wiring errors, and code violations cause damages estimated at about $20 billion dollars in the US each year, based on the following considerations: ...

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