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:
Dec. 10, 2019
Filed:
Mar. 29, 2018
Yamaha Corporation, Hamamatsu-shi, JP;
Yoshiro Miyake, Hamamatsu, JP;
YAMAHA CORPORATION, Hamamatsu-Shi, JP;
Abstract
A class D amplifier includes an output stage that performs a switching operation, a feedback circuit that generates a feedback signal based on the output signal output from the output stage, an integration amplifier that outputs an integrated value signal in response to an input signal and the feedback signal, a comparator that compares the integrated value signal with a standard signal, a driver that controls the output stage based on a signal output from the comparator, a carrier signal generator that generates a carrier signal, a reference signal generator that outputs a reference signal indicating a driving amount for a load at the output stage, and a standard signal switch that switches the standard signal to the carrier signal or a standard potential based on whether a level of the reference signal is smaller than a threshold value.