Precision voltage/current/power source
US5642300A · kind A · utility
30Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1996 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Jan 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the precision source disclosed herein, a reference waveform and a correction waveform are combined and fed to an output amplifier which supplies an output waveform to a load, e.g., a wattmeter under test. The reference and correction waveforms are generated by digital-to-analog conversion of values stored in respective data tables. The output waveform is then combined with the reference waveform to obtain an error signal which is then digitized and utilized to update the data table from which the correction waveform is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.