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Power without plugs, sometimes without batteries

Connectors wear out, let water in and need a daily ritual. We design wireless charging and energy harvesting for devices where a plug is the weak point: rings, styluses, sealed sensors, medical devices.

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Questions we often hear

“We want to charge a ring-sized device without a connector.”

“Could this sensor live on harvested energy?”

“Our wireless charger gets hot and charges slowly.”

“How small can the receiver coil be?”

What we do

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Wireless charging for small devices, including NFC Wireless Charging at 13.56 MHz and inductive charging.

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Coil and ferrite design for tiny receivers in rings, styluses, wearables and biomedical sensors.

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Coupling, efficiency, heating and alignment, simulated and measured.

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Battery-free NFC sensors, powered by the reader while they are being read.

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Energy harvesting concepts from radio waves, light, heat or motion.

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Power architecture for low-power systems: storage, power management and an energy budget per year.

Technologies

NFC Wireless Charging, 13.56 MHz
Inductive charging
Battery-free NFC
Energy harvesting
Coin cells and supercapacitors

What you get

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A feasibility study with coupling and efficiency numbers

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Coil and ferrite designs

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A working prototype

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A measurement report

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Integration guidelines

The human side

Every charging ritual is a small tax on attention. We try to remove it: devices that top up where they already rest, or that need no battery at all.

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Other areas

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