Input circuit with wide range input voltage compatibility
US11063567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2019 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/405
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An input circuit includes an input stage having an input node and a direct-current (DC) amplifier coupled to the input node. The input circuit also includes an alternating-current (AC) amplifier coupled to an output node of the DC amplifier. The input circuit also includes a capacitor coupled between the input node and the output node of the DC amplifier. The input circuit also includes a voltage divider coupled to the DC amplifier and the AC amplifier. The voltage divider includes first resistor associated with the DC amplifier and a second resistor associated with the AC amplifier, where the first resistor is larger than the second resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.