L'oreal

John Fluke Mfg. Co., Inc.

David Allen Gunderson

Joseph W Grez

Steven D Swift

Jonathan J Parle

A battery charger and methods for magnetically transferring power from a power source to a battery is disclosed. A driver circuit outputs a modulated signal having a duty cycle from the power source to a sender-side circuit and across a space to a receiver-side tuned circuit. A sender-side sensor is configured to sense a parameter of the sender-side tuned circuit. The controller modifies the first duty cycle of the modulated signal based on the sensed parameter. A receiver-side circuit capable of determining charge status of the receiver side is also disclosed.

Charge current monitoring or control in a resonance-tuned inductive charger

The laminated RFID tag, mountable to a part of a personal care appliance, has rounded corners or a round peripheral edge, which is adapted to prevent absorption of water or other solvents.

RFID tag for a personal care appliance

Bi-polar electronic signal converters, such as analog-to-digital or digital-to-analog converters, with a single polarity accurate reference source are disclosed. In one polarity direction, the accurate reference source is used in a conventional manner to transform the signal to be converted from one form (e.g., analog) to the other form (e.g., digital). In the other polarity direction, an inaccurate reference source is used in a similar conventional manner to convert the signal from one form to the other form. Periodically, the accurate and the inaccurate reference sources are compared to determine a correction multiplier. The correction multiplier is used during conversions using the inaccurate reference source to compensate for the inaccuracy of the inaccurate reference source.

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Everett, WA, United States of America

David Allen Gunderson