Class D amplifier
US6897725B2 · kind B2 · utility
5Cited by
12References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Mar 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3026
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A class D amplifier is provided with a frequency characteristic compensation function. An automatic frequency characteristic compensation circuit is disposed at an input unit of a class D amplifier. The frequency characteristic of the class D amplifier is automatically measured while a load is connected, using a test signal having a predetermined frequency and signal level. An inverse characteristic is computed for compensating the frequency characteristic to the design frequency characteristic, and the inverse characteristic is set in the automatic frequency characteristic compensation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.