Invention Grant
- Patent Title: Systems and methods for flux cancelation in electronic devices
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Application No.: US15965766Application Date: 2018-04-27
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Publication No.: US10271467B2Publication Date: 2019-04-23
- Inventor: Prasad S. Joshi
- Applicant: Prasad S. Joshi
- Agency: Cionca IP Law P.C.
- Agent Marin Cionca
- Main IPC: H02J50/70
- IPC: H02J50/70 ; H02J50/10 ; H05K9/00 ; G01R33/07 ; H04B5/00 ; H01L25/00 ; H01L29/82 ; H01L23/58 ; H02J7/02 ; G01R33/025

Abstract:
A method of performing active shielding of an electronic device from a magnetic field having a first flux, using a circuit; having the steps of: measuring, using a Hall effect sensor, a first magnitude and a first direction of the first flux; creating an output voltage equal to the first magnitude; feeding the output voltage to a differential amplifier; amplifying the output voltage to create an amplified output; comparing, using an error amplifier, the amplified output to a reference voltage to determine an error voltage; feeding the error voltage to an electric power switching circuit; generating a switching waveform based on the error voltage; feeding the switching waveform as an input to a driver module; creating, based on the input, a current having amplitude equaling the first magnitude and a second direction opposite of the first direction, such that a second flux is created to cancel the first flux.
Public/Granted literature
- US20180249602A1 SYSTEMS AND METHODS FOR FLUX CANCELATION IN ELECTRONIC DEVICES Public/Granted day:2018-08-30
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