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A Fire Alarm System Based on High-Efficiency and SmartClass-D Audio Power Amplifier of 600W(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2016年04期
Page:
0-
Research Field:
·物理学·
Publishing date:

Info

Title:
A Fire Alarm System Based on High-Efficiency and SmartClass-D Audio Power Amplifier of 600W
Author(s):
Zhu Xudong1; Zhang Ailiang1; Chen Dianyong2; Yin Bo1
(1.Wuxi Institute of Arts and Technology,Wuxi 214231,China)(2.Carleton University,Ottawa,Canada)
Keywords:
Linux; power factor correction; class D power amplifier; all digital phase-locked loop; sampling rate conversion; interpolation
PACS:
TN911.23
DOI:
10.3969/j.issn.1001-4616.2016.04.020
Abstract:
This paper discusses the design of a 600-watt high efficiency smart class D audio amplification system for fire alarm networks. An embedded Linux effectively manages the system events and provides interface to large fire alarm networks. Bridgeless power factor correction circuits using Gallium-Nitride power transistors achieve a power factor of 99.6%. The efficiency of the whole system is 90%. An FPGA-based all digital PLL simplifies the design of sample-rate conversion filter and interpolation filter.

References:

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Last Update: 2016-12-31