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公开(公告)号：US10439387B2
公开(公告)日：2019-10-08
申请号：US15393440
申请日：2016-12-29
Applicant: Ze Chen
Inventor： Ze Chen , Boon Lum Lim , Samuel Raj
Abstract: In one example, a ground fault circuit interrupter is provided. It may include a current imbalance detection circuit configured to provide a leakage signal and a main processing circuit including a processor. The leakage signal may correspond to a current imbalance between a supply path and a return path. The processor may be configured to receive the leakage signal, analyze a time pattern of the leakage signal, determine whether a ground fault exists based on analysis of the time pattern, and generate a first trigger signal if the ground fault is determined to exist. The ground fault circuit interrupter may further include a back-EMF detection circuit configured to provide a back-EMF detection signal. Methods for detecting and responding to a ground fault are also provided.
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公开(公告)号：US20180191150A1
公开(公告)日：2018-07-05
申请号：US15393440
申请日：2016-12-29
Applicant: Ze Chen
Inventor： Ze CHEN , Boon Lum Lim , Samuel Raj
CPC classification number: H02H3/17 , H02H1/0007 , H02H1/0069 , H02H3/04 , H02H3/07 , H02H3/331 , H02H3/334
Abstract: In one example, a ground fault circuit interrupter is provided. It may include a current imbalance detection circuit configured to provide a leakage signal and a main processing circuit including a processor. The leakage signal may correspond to a current imbalance between a supply path and a return path. The processor may be configured to receive the leakage signal, analyze a time pattern of the leakage signal, determine whether a ground fault exists based on analysis of the time pattern, and generate a first trigger signal if the ground fault is determined to exist. The ground fault circuit interrupter may further include a back-EMF detection circuit configured to provide a back-EMF detection signal. Methods for detecting and responding to a ground fault are also provided.
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