New Notch Low Pass Filter for use in Switching Audio Amplification

被引：1

作者：

Ferreira, Carlos ^{[1
,3
]}

Borges, Beatriz ^{[2
,3
]}

机构：

[1] DEE, ESTT, Inst Politecn Tomar, Tomar, Portugal

[2] Inst Super Tecn, Lisbon, Portugal

[3] Inst Telecomunicacoes, Lisbon, Portugal

来源：

2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10 | 2008年

关键词：

D O I：

10.1109/PESC.2008.4592222

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：1905 / +

页数：2