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. 16, 2023
Filed:
Apr. 20, 2022
Hong Kong Applied Science and Technology Research Institute Company Limited, Hong Kong, HK;
Abstract
A voltage detector has a diode ladder with one or more diodes connected in series between a battery voltage input and an upper measuring node. A measuring diode is connected between the upper measuring node and a lower measuring node. A resistor and a power-down switch are connected in series between the lower measuring node and a ground. An analog input to an Analog-to-Digital Converter (ADC) is connected by a switch to the upper measuring node to generate an upper digital value. Then the switch connects the analog input to the lower measuring node to generate a lower digital value. The difference between the upper and lower digital values is the diode voltage drop across the measuring diode and is multiplied by a number of diodes in the diode ladder and added to the upper digital value to generate a battery voltage measurement.