In the literature, the great many of the characteristics which one describe the electrical and operational parameters of power audio amplifiers depending on evaluation yardsticks and can give completely different estimations to quality of operation of a amplifiers. For correct usage of integrated circuits of the power audio amplifiers, irresepective of a field of application, it is necessary to know following: - Function of integrated circuit - The main electrical characteristics - Schematic of connection and (or) internal structure - Package type - Equivalents (replacements). With reference to consumer and professional electronics equipments, the greatest popularity are the integrated circuits-power audio amplifiers, due to their advantages - schematic simplicity, small dimensionss, large range of output powers, polyfunctionality. INTRODUCTION One of the basic components of any sound-reproducing system, without dependence from its class is the power amplifier of audio frequencies called also the power audio amplifier. SMD marking codes for power audio amplifiers in SMD cases Logos, contact info and web-adresses of integrated circuits powe raudio amplifiers manufacturers Power audio amplifiers schematics of connections 5000 Inte grated Cir cuitsInteg Circuitspo wer audio amplif ier s pow amplifier iers databook Introduction
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