Electromechanical transducer-coupled mechanical structure with negative capacitance compensation circuit
US4158787A · kind A · utility
33Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1978 |
| Grant date | Jun 19, 1979 |
| Priority date | — |
| Expiry date | May 8, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3229
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Arrangements are disclosed for substantially reducing the effect of the inherent transducer capacitance in a transducer-coupled electromechanical system which is subject to vibrational movement. Electrical circuitry is coupled across the transducer output to provide a negative capacitance having a magnitude substantially the same as that of the inherent transducer capacitance, thereby substantially nullifying the inherent transducer capacitance and enabling improved damping (including low-noise damping) to be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.