Inventor

KOYAMA YASUYUKI

JP2 patents

Patents

2 patents

US6792121B2Sep 14, 2004

Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit

ROHM CO LTD13 citations79

US10367459B2Jul 30, 2019

Class-D amplifier circuit

ROHM CO LTD2 citations64