Patent · US Active

Current-source switching hybrid audio amplifier

US10911009B2 · kind B2 · utility

2Cited by
2References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 29, 2018
Grant dateFeb 2, 2021
Priority date
Expiry dateFeb 6, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04R1/1041
  • WIPO fieldBasic communication processes
  • WIPO sectorElectrical engineering

Abstract

An audio amplifier has an analog current source amplifier and a class D amplifier. The analog current source amplifier is active in a first mode to drive a speaker when an audio signal has smaller amplitude. The class D amplifier is active in a second mode to drive the speaker when the audio signal has larger amplitude. Other aspects are also described and claimed.

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