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[Guangxi Normal University School Competition] Audio Amplification Circuit

Overview

① Maximum undistorted output power *P*OR≥10W (distortion less than 10%), at this time efficiency *η*≥40%. ②Power amplification bandwidth BW≥ (40~20000) Hz. ③When the preamplifier input terminal is shorted to ground, the AC noise V PP on R L =8Ω is ≤200mV pp . ④The preamplifier has bass, midrange, and treble adjustment functions ( the changes in bass and treble should be clearly heard during adjustment). ⑤With volume adjustment function. Award information: Liu Xingrong, Huang Yiting, He Yupei Instructor: Xu Qingfu

Design Files

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Update:2025-06-20 02:12:52

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