An obstacle blocking wide acceptance of power MOSFETS in audio amplifiers is the lack of an automatic bias technique. A unique circuit topology senses and maintains quiescent current despite the half-wave pulses inherent in class AB operation. Performance of the circuit, consisting of little more than a differential amplifier driving a totem pole output, rivals that of more complex circuits.

Author: Roehr, Bill
Affiliation: Siliconix, Inc., Santa Clara, CA
AES Convention: 69 (May 1981) Paper Number: 1757
Publication Date: May 1, 1981 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11996

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