Switching amplification apparatus
US6831509B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2003 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Jun 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/372
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To provide a new switching amplifier in which power supply switching noise is reduced to improve the quality. The switching amplifier is provided with a power amplifier (1) that has a modulator which modulates an analog signal or a multi bit digital signal into a two-level signal, and supplies an output pulse signal from this modulator to a power switching element (3); and a &Dgr;&Sgr; power supply (5) which is provided with a &Dgr;&Sgr; modulating device, and the construction is such that the output pulse signal from the modulator of the power amplifier (1) is supplied to the &Dgr;&Sgr; power supply (5), and also the construction is such that the &Dgr;&Sgr; power supply (5) receives the pulse signal as an operating clock, &Dgr;&Sgr; modulates the received pulse signal, and supplies the &Dgr;&Sgr; modulated pulse signal to the power switching element (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.