For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
An Analog/Digital Mixed-Mode Audio Power Amplifier with Novel Ripple Feedback Filter
Nam-In KIM Sang-Hwa JUNG Gyu-Hyeong CHO
IEICE TRANSACTIONS on Communications
Publication Date: 2003/09/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Communication Devices/Circuits
ripple filter, analog amplifier, digital amplifier, efficiency, THD,
Full Text: PDF(478.8KB)>>
A digital power amplifier is combined with an analog power amplifier via a new ripple feedback filter for high power audio amplifier. Both high fidelity and high efficiency are achieved owing to the proposed filter in combination with a dynamic control of switching frequency. A prototype having a rated power of 2 kW is built for live concert use and tested successfully.