Peak sample circuit for AC voltage and method thereof
US9577514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Feb 6, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A peak sample circuit for AC voltage, including: a rectifier coupled to receive an AC voltage and to rectify the AC voltage to generate a rectified signal; a delay circuit coupled to receive the rectified signal and to delay the rectified signal to generate a delayed rectified signal; a comparison circuit coupled to receive the delayed rectified signal and to generate a square signal based on the comparison of the rectified signal and the delayed rectified signal; and a sample output circuit coupled to receive the rectified signal, wherein the sample output circuit samples the rectified signal under the control of the square signal and provides a peak sample signal representative of the peak value of the AC voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.