| 摘要 |
PURPOSE: A 3-channel audio amplifier is provided to obtain the 3-channel stereo sound by mixing audio signals of two channels and amplifying the mixed audio signals. CONSTITUTION: A 3-channel audio amplifier includes a first audio input terminal, a second audio input terminal, a first amplification path, a second amplification path, a first speaker, a second speaker, and a third speaker. The first audio input terminal is used for receiving a right audio signal. The second audio input terminal is used for receiving a left audio signal. The first amplification path is used for amplifying the audio signal of the first audio input terminal. The second amplification path is used for amplifying the audio signal of the second audio input terminal. The first speaker is used for converting the amplified audio signal of the first amplification path to the sound. The second speaker is used for converting the amplified audio signal of the second amplification path to the sound. The third speaker is used for mixing the amplified audio signals of the first and the second amplification paths and converting the mixed audio signal to the sound.
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