Acoustic signal generator, and method for generating an acoustic signal
US6819227B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jun 28, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/53
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An acoustic signal generator, and a method for generating an acoustic signal are described. The acoustic signal generator has a membrane that can oscillate, a deflection sensor for detecting any deflection of the membrane, an exciter configuration that is coupled to the membrane, and a power semiconductor switch with a load path that is connected to the exciter configuration. The switch has a drive connection. A drive circuit has a first connection connected to the drive connection of the power semiconductor switch and at which a drive signal is available. The drive circuit further has a second connection, to which the deflection sensor is connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.