Digital watts transducer
US4079313A · kind A · utility
20Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1977 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Apr 18, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R21/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit for sensing instantaneous current and voltage generates a digital output which indicates the power consumed over a time interval. The analog product of sensed current and voltage is converted to a pulse train in which each pulse represents a plus or minus increment of power. These pulses are either added to or subtracted from a total accumulated power number which is stored in a digital counter. The contents of the digital counter is coupled to a display to provide a readout of total consumed power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.