Power amplification circuit

The invention discloses a power amplification circuit, which is used for amplifying an audio signal output by a sound source and then outputting the audio signal to a loudspeaker. The sound source comprises an anode output end and a cathode output end. The power amplification circuit comprises an ex...

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Bibliographic Details
Main Authors ZHUANG ZONGREN, WENG SHIFANG, DING LINKUN, SHAN JIANGFENG
Format Patent
LanguageChinese
English
Published 11.07.2012
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:The invention discloses a power amplification circuit, which is used for amplifying an audio signal output by a sound source and then outputting the audio signal to a loudspeaker. The sound source comprises an anode output end and a cathode output end. The power amplification circuit comprises an external circuit and an audio amplification chip. The audio amplification chip comprises a first resistor, a second resistor, a third resistor, a fourth resistor and an amplifier. The external circuit comprises a fifth resistor and a sixth resistor. The first resistor is connected between the normal phase input end and normal phase output end of the amplifier, and the second resistor is connected between the inverting input end and inverting output end of the amplifier. The third resistor is connected between the normal phase input end of the amplifier and the fifth resistor, and the fourth resistor is connected between the inverting input end of the amplifier and the sixth resistor. The fifth and sixth resistors are
Bibliography:Application Number: CN20101619563