Detection of the zero crossing of an A.C. voltage
US7236383B2 · kind B2 · utility
3Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Oct 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for detecting the zero crossing of a variable voltage across at least one switching element, including circuitry for measuring the slope of the voltage when it varies in a given direction, and for indicating a zero crossing if this slope is comprised within a range of values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.