Low-noise, large dynamic-range sensor for measuring current
OwnerJames William Masten, Jr.inventor
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Abstract
A low-noise alternating current sensor enables low-cost, large dynamic range current measurements of low-frequency alternating current flows. The low-noise current sensor offers enhanced dynamic range and fine-grained sensitivity unavailable in existing sensor technology. The sensor's dynamic range and sensitivity to low-frequency AC enable new capabilities in precision current control: a valuable and necessary capability in the control and management of circuit considerations, from applications for the grid to transportation, to the control of remote assets.
Claims20
A current sensor comprising:
- a plurality of substrates;
- a first conductor;
- a magnetic flux conducting material comprising a first portion orthogonal to the first conductor and a second portion, each of the first and second portions penetrating the plurality of substrates;
- an inductive sensor with a first loop oriented orthogonal to the second portion of the magnetic flux conducting material;
- an amplifier coupled to the inductive sensor;
- and
- a Faraday cage disposed between the first portion and the second portion of the magnetic flux conducting material.
A current sensor for sensing alternating current, the sensor comprising:
- a first substrate;
- a second substrate disposed under the first substrate;
- a third substrate disposed under the second substrate;
- a magnetic flux conducting material comprising a first portion orthogonal to a first conductor and a second portion, each of the first and second portions penetrating the plurality of substrates;
- an inductive sensor with a first loop oriented orthogonal to the second portion of the magnetic flux conducting material;
- and
- a Faraday cage disposed between the first portion and the second portion of the magnetic flux conducting material.
Dependencies are inferred from the claim text.