Detection of asymmetrical load in an AC circuit
US6642706B2 · kind B2 · utility
1Cited by
3References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Oct 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for detecting if a load supplied with a high frequency AC power source is asymmetrical. The input voltage and a DC blocking voltage are connected to a differential amplifier circuit, and any difference in voltage is signaled. The load voltage and the DC blocking voltage are each reduced, for example, to 10% and 20%, respectively, while keeping them proportional to their respective full values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.