The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Nov. 07, 2019
Chung-fu Chou, Yongkang, TW;
Chung-Fu Chou, Yongkang, TW;
Other;
Abstract
The present invention generally relates to a structure and method of audio amplifier with power feedback, including a power amplifying unit, a loud-speaker, a current sensing unit, a voltage sensing unit and a multiplying unit. The power amplifying unit includes an input side and an output side, the input side inputs an audio voltage signal, and the loudspeaker is electrically connected to an output side of the power amplifying unit. The current sensing unit is electrically connected to the output side of the power amplifying unit and senses the output current of the power amplifying unit and then converts it into a current control voltage signal. The voltage sensing unit is electrically connected to the output side of the power amplifying unit, and senses the output voltage of the power amplifying unit to form an output sensing voltage signal. The multiplying unit obtains the voltage of the current control voltage multiplied by the output sensing voltage, and the output side of the multiplying unit is electrically connected to the input side of the power amplifying unit to form a closed loop power feedback structure. Accordingly, the output quality of the amplifier and loud-speaker is improved.