A procedure for analyzing, designing, and assessing audio power amplifier output stages operating in classes A, B, AB, G, and H with reactive loads is presented. The study considers steady-state sinusoidal analysis for BJT, IGBT, and MOSFET technologies. Electrical/mechanical/acoustical models of loudspeakers and enclosures are used whose parameters are obtained through the Thiele/Small model. An equivalent electrical thermal model for a transistor heatsink ambience system associated with instantaneous and average powers is used for designing the power stage. A MATLAB software has been developed, which provides considerable support to the designer for all phases required in the design of audio power amplifier output stages.

Authors: Bortoni, Rosalfonso; Filho, Sidnei Noceti; Seara, Rui
Affiliation: Circuits and Signal Processing Laboratory, Department of Electrical Engineering, Federal University of Santa Catarina, Florianópolis-SC, Brazil
JAES Volume 50 Issue 7/8 pp. 547-563; August 2002
Publication Date: July 15, 2002

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.