Automatic zeroing and detection circuit and method
US10009015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In accordance with an embodiment, an automatic zeroing circuit is provided that includes an automatic zeroing circuit, comprising a first voltage adjustment circuit coupled for receiving an induced voltage and a second voltage adjustment circuit coupled for receiving a common voltage. A comparator having an inverting input terminal coupled to the first voltage adjustment circuit and a noninverting input terminal coupled to the second voltage adjustment circuit. In accordance with another embodiment, a method for automatically zeroing a detection circuit includes receiving a first back electromotive force at a first voltage level and shifting the first back electromotive force from the first voltage level to a second voltage level. A comparator circuit is calibrated and the first back electromotive force is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.