Apparatus for calculating amplitude values of sinusoidal waves
US4073009A · kind A · utility
14Cited by
5References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 26, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Aug 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The apparatus comprises a sampling hold circuit for sampling the amplitude of a sinusoidal wave at a predetermined frequency, a data sample extracting circuit for extracting two data samples at two points immediately before and after the peak value of the sinusoidal wave, and an operation circuit responsive to the absolute values of the two data samples for calculating the amplitude value of the sinusoidal wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.