The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 2018
Filed:
May. 04, 2017
Chengli LI, Suzhou, CN;
Chengli Li, Suzhou, CN;
Guolan Yue, Suzhou, CN;
Other;
Abstract
A leakage current detection device includes a switching module coupled between power input and output terminals, for controlling the electrical connection between the input and output terminals; a leakage current detection module, including a switch driving component, configured to control the switching module based on working periods of the switch driving component and based on whether a leakage current signal is detected; and a first self testing module, coupled to the leakage current detection module, for periodically generating a self testing pulse signal as a simulated leakage current signal. The first self testing module includes: a periodic timing circuit and a self testing pulse signal generating circuit coupled to each other, where the periodic timing circuit controls the period of the self testing pulse signal. The device provides enhanced safety protection.