Design and implementation of a DC-DC flyback converter to feed a class a tube amplifier

Author

Werner, Johnny ; Oliveira, Sérgio Vidal Garcia ; Péres, Adriano

Author_Institution

Dept. de Eng. Eletr. e de Telecomun., FURB - Univ. Regional de Blumenau, Blumenau, Brazil

fYear

2011

fDate

11-15 Sept. 2011

Firstpage

992

Lastpage

996

Abstract

In this work is presented a DC-DC flyback converter to feed a 6W Class A power amplifier for guitars using vacuum tubes as amplifying device. There are implemented two identical class A amplifiers, one of them is powered by a linear power supply and the other is powered by the DC-DC flyback converter. It was possible to conduct a performance comparison from input and output signals, efficiencies and the most important waveforms taken from the experimentation of the two power amplifiers. It is proved that a Vacuum Tube Class A power amplifier could be fed by Switched Mode Power Supply without prejudice noise.

Keywords

DC-DC power convertors; audio-frequency amplifiers; musical instruments; power amplifiers; switched mode power supplies; Class A power amplifier; Class A tube amplifier; DC-DC flyback converter; guitars; linear power supply; power 6 W; switched mode power supply; vacuum tubes; Electron tubes; Feeds; Power amplifiers; Switched-mode power supply; Transistors; Valves; Class A amplifier; audio power amplifier; flyback converter; linear power supply; vacuum tube;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (COBEP), 2011 Brazilian

Conference_Location

Praiamar

ISSN

2175-8603

Print_ISBN

978-1-4577-1644-7

Electronic_ISBN

2175-8603

Type

conf

DOI

10.1109/COBEP.2011.6085293

Filename

6085293