Electronic device for measuring electrical power supply to a load
US5099195A · kind A · utility
10Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Dec 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06J1/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical power measuring device wherein signals (V.sub.i, V.sub.v) representing one of the current and voltage supplied to a load are applied to the input of a sigma delta modulator (9), and the state (0 or 1) of the modulator output together with the polarity of the other one of the voltage and current values, is used to determine the sense in which the digital signals representative of successive samples of the other one of voltage and current values are accumulated in an accumulator (11). The count in the accumulator (11) consequently increases at a rate representative of the power supplied to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.