Optimisation of the total harmonic distortions of the acoustic vacuum tube push-pull amplifier

• Autorzy: Maleczek S.
• Konferencja: 12th International Symposium on Sound and Vision Engineering and Mastering (ISSVEM'07), June 15-16, Gdansk, Poland
• Języki publikacji: EN

Abstrakty

EN

The study presents the method of reducing total harmonic distortions of the acoustic vacuum tube amplifier with 30 W output power. The optimisation of the amplifier's circuit is carried out by introducing the solutions applied in the transistor technology such as differential amplifiers with a source of a current. Selection of the amplifier vacuum tubes, as well as of their operating points, was studied as a mean to reduce the distortion amount of the whole amplifier stage. By optimising the amplifier it was presented how a simple circuit solution assures very good final parameters with relatively low costs. The measurements were conducted using the Audio Precision systems.

Słowa kluczowe

EN

acoustic vacuum tube amplifier; harmonic distortions; audio equipment

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2008
• Tom: Vol. 33, No. 1
• Strony: 103--109
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Maleczek S.

• Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland,

Bibliografia

• [1] FESZCZUK M., Wzmacniacze elektroakustyczne, WKŁ, Warszawa 1986.
• [2] HENNEL J., Lampy elektronowe, WNT, Warszawa 1973.
• [3] LANGFORD–SMITH F., ASTON R. H., The design of high fidelity amplifier, Radiotronics, No. 128.
• [4] MAIK Z., Układy elektroniczne, PWSZ, Warszawa 1966.
• [5] MALECZEK S., Triodowy wzmacniacz, Elektronika Praktyczna, 6 (2005).
• [6] MARUSZEWSKA M. SAWICKI J., Radiomechanika, PWSZ, Warszawa 1958.
• [7] Politechnika Wrocławska, Instrukcja obsługi stanowiska Audio Precision.
• [8] WILLIAMSON D. T. N., Amplifiers and superlatives, Wireless Word, September 1952.
• [9] http://ecclab.com/
• [10] http://www.fonar.com.pl/
• [11] http://www.mif.pg.gda.pl/homepages/tom