Audio power amplification circuit

The utility model relates to an audio power amplification circuit which comprises a power supply input end, a power amplification unit circuit N1, a phase inverter circuit N2, a phase inverter circuit N3, a phase inverter circuit N4 and a phase inverter circuit N5, and the power supply input end VCC supplies voltage for normal work of the circuit; the power amplifier unit circuit N1 adopts an SSM3302ACPZ power amplifier unit circuit, and a power amplifier unit can be in a normal working state by configuring a peripheral circuit; and the phase inverter circuits N2, N3, N4 and N5 all adopt triode phase inverter circuits with the model of 2SC2712Y and are used for controlling a control pin of the power amplification unit N1, so that the audio power amplification circuit is realized. The circuit has the advantages of high reliability and small size, and is mainly applied to circuits of low-power devices such as horns, loudspeakers and the like. 本实用新型涉及一种音频功率放大电路,包括电源输入端、功放单元电路N1、反相器电路N2、反相器电路N3、反相器电路N4、反相器电路N5,其中