Electrodynamic sensors and applications thereof
US7885700B2 · kind B2 · utility
47Cited by
17References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2002 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Feb 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrodynamic sensor comprises a high input impedance electrometer adapted to measure small electrical potentials originating from an object under test and having a pair of input probes, characterized in that at least one of said pair of input probes has no direct electrical contact with said object, wherein the circuit arrangement of said electrometer comprises an amplifier which includes a combination of ancillary circuits cumulatively to increase the sensitivity of said electrometer to said small electrical potentials whilst not perturbing the electrical field associated therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.