Logarithmic amplifier
US4891603A · kind A · utility
9Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Dec 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A logarithmic amplifier which obtains accurate logarithmic output voltage and expands maximum current value and which realizes accurate logarithmic conversion by eliminating logarithmic conversion error voltage resulting from internal resistance of logarithmic conversion element using a voltage appearing when a forward current of logarithmic conversion element is applied to a resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.