Current sensing load demand apparatus and methods
US7528507B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 21, 2007 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Aug 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus supplies AC power to a load. The apparatus includes a set output terminals, a primary circuit, and a load sensing circuit. The primary circuit is electrically coupled to a source of AC power and to the output terminals for selectively providing power at a low voltage at the output terminals or electronically coupling the source of AC power directly to the output terminals. The load sensing circuit coupled to the primary circuit and the source of AC power for determining a resistance associated with the load at initial application of the load and controlling the primary circuit to electronically couple the source of AC power directly to the output terminals if a proper load is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.