Circuit for amplifying a weak dircet voltage signal
US5621350A · kind A · utility
1Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/304
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for amplifying a weak direct voltage signal has a direct voltage amplifier that can be periodically switched from the direct voltage signal to a reference signal by a switching member connected to its input terminals. The circuit also has a measurement value processing device connected downstream of the direct voltage amplifiers. In order to obtain an amplified direct voltage signal closely approximating the weak direct voltage signal to be amplified, the switching member is arranged as a periodical shunt between the input terminals of the direct voltage amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.