Patent · US Active

Audio amplifier

US11804809B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Markus Mandl · Agendorf, DE
Gregor Sauer · Rockenberg, DE
Thomas Stein · Oberkochen, DE

Key dates

Filing date	Mar 18, 2022
Grant date	Oct 31, 2023
Priority date	—
Expiry date	Mar 18, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/351
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In the field of audio amplifiers, the prior art for high output power levels is now to use class D technology. In this technology, audio signals are converted into a pulsed signal.An audio amplifier 1 is proposed, with a modulator section 4 for accepting an input signal and outputting two intermediate signals, wherein the modulator section 4 is designed to generate the intermediate signals by modulating the input signal, with an amplifier section 8 for accepting the two intermediate signals and outputting two amplified signals, wherein the amplifier section 8 is designed to generate the two amplified signals by amplifying the two intermediate signals, the amplifier section having two power stages 11;12, with an end section 21 for accepting the two amplified signals and for outputting an output signal for a loudspeaker device 2, wherein the audio amplifier 1 can be switched between parallel operation and bridge operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.