We investigate 27.12 MHz bi-directional WPT using current-mode class D (CMCD) converters. We use a simplified model that is better for design, which we derived from a well-known ...

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Last Updated 7/11/2025 at 9:35 a.m. ET: The sun rises on the final day of Prime Day. Somewhere, an Alexa blinks to life. Emails pile up, unopened. And in a tucked-away corner of GQ’s New York ...

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