论文部分内容阅读
开关电源虽然有无可比拟的优点,但在音响功放中的应用却不尽人意。虽然近年来不断有此类产品推出,然而并未得到发烧友的认可。究其原因,首先是可靠性欠佳,加之价格与环牛加大水溏相比又偏高;其次是开关电源的纹波干扰和反应速度对音质也有影响。因为开关电源工作在矩形脉冲状态,其谐波分量频谱极宽,要消除空间电磁场辐射和输出电路中残余纹波比较困难。另外,无论脉冲调宽系统还是
Although the switching power supply has unparalleled advantages, but the application of audio amplifier is not satisfactory. Although such products have been introduced in recent years, they have not been approved by enthusiasts. The reason, first of all, the reliability is poor, combined with the price increase with the ring cattle is too high; the second is the switching power supply ripple interference and the reaction speed has an impact on the sound quality. Because the switching power supply works in the rectangular pulse state, its harmonic component spectrum is very wide, it is more difficult to eliminate the electromagnetic field radiation in the space and the residual ripple in the output circuit. In addition, both pulse width modulation system or