DocumentCode
2461266
Title
New notch low pass filter for use in switching audio amplification
Author
Ferreira, Carlos ; Borges, Beatriz
Author_Institution
DEE, Inst. Politec. de Tomar, Tomar
fYear
2008
fDate
15-19 June 2008
Firstpage
1905
Lastpage
1911
Abstract
In this paper a novel switched audio amplifier filter topology is proposed and its design criteria are presented. It permits improved attenuation of the switching frequency components and load impedance variation with very low gain variation in the audio band. The new filter configuration allows the use of simple converter topologies while obtaining the same output voltage ripple levels as in multilevel converters. The construction of a prototype is addressed and experimental results are presented, showing the feasibility of the proposed method.
Keywords
audio-frequency amplifiers; low-pass filters; notch filters; power convertors; switching; multilevel converters; notch low pass filter; switching audio amplification; switching frequency components; voltage ripple; Attenuation; Costs; Impedance; Low pass filters; Power amplifiers; Pulse width modulation converters; Switching converters; Switching frequency; Topology; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE
Conference_Location
Rhodes
ISSN
0275-9306
Print_ISBN
978-1-4244-1667-7
Electronic_ISBN
0275-9306
Type
conf
DOI
10.1109/PESC.2008.4592222
Filename
4592222
Link To Document