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US 2016/0103155 A1Published application
Current Sensor
AssigneeBose Corporation
InventorsJoseph Taher Mossoba, Manoel Soares, Michael B. Nussbaum
Life of this patent
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Abstract
An example circuit may include an inductor; a low-frequency sensor connected to the inductor; a high-frequency sensor connected to the inductor; and an integrator connected to the low-frequency sensor and the high frequency sensor, comprising one or more resistive devices and one or more capacitive devices, wherein the integrator is characterized by a time constant that varies as a function of the inductance of the inductor. The inductor may, for example, be part of a switched-mode power supply or an amplifier.
Claims22
A circuit comprising:
- an inductor;
- a low-frequency sensor connected to the inductor;
- a high-frequency sensor connected to the inductor;
- and
- an integrator connected to the low-frequency sensor and the high frequency sensor, comprising one or more resistive devices and one or more capacitive devices, wherein the integrator is characterized by a time constant that varies as a function of the inductance of the inductor.
2 more elements
A method, comprising:
- determining the inductance of an inductor for a plurality of currents through the inductor;
- selecting a low-frequency sensor to output a first voltage in response to a current through the inductor;
- selecting a high-frequency sensor to output a second voltage in response to the current through the inductor;
- and
- configuring an integrator to output a third voltage in response to the first voltage and the second voltage, wherein the integrator is characterized by a time constant that varies as a function of the inductance of the inductor for the plurality of currents through the inductor.
2 more elements
Dependencies are inferred from the claim text.