Electronic energy saving device
US5367246A · kind A · utility
Inventor
Key dates
| Filing date | Feb 12, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Feb 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic power factor correcting device for correcting the power factor of a load connected to a power line having a plurality of confuctors including a neutral conductor, a power line interface circuit for interfacing the device with the power line, a phase sensing circuit connected via the interface circuit to at least two of the conductors for sensing a phase shift between voltage and current in the two conductors. It further includes a phase correction circuit with a plurality of weighted capacitors, and capacitor connecting means having a control input connected to the phase sensing circuit for connecting at least one of the weighted capacitors to the power line for correcting the phase shift on the two conductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.