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:
May. 21, 2024
Filed:
Aug. 18, 2021
Shanghai Natlinear Electronics Co., Ltd., Shanghai, CN;
Shanghai Natlinear Electronics Co., Ltd., Shanghai, CN;
Abstract
An AC detection circuit, including a live wire input end and a neutral wire input end; a first diode and a second diode being both Zener diodes and with anodes connected to each other; a first resistor and a second resistor; a rectification module connected to the live wire input end and the neutral wire input end; a power supply for supplying power; a current mirror module with a current value at the first output end and a current value at the second output end having a fixed ratio; a unidirectional conduction module, configured to enable unidirectional conduction of the current from the current mirror module to the first diode; and a current comparison module, including an oscillator, a timer, a current comparator and a reference current source, and configured to compare the current value of the second output end of the current mirror module with a reference current value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile