Vicor dc-dc enables a second tethered drone

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FlyFocus has developed a detachable tethered drone that can hover for up to 30 days at 70m altitude, powered through a tether, then drop the line to fly for up to 30 minutes on internal batteries. Called CableGuard, the drone consumes up to 5kW, and 400Vdc is specified within the tether cable to reduce I2R …

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