D类放大器设计实例设计并制作一个高效率音频功率放大器及其参数的测量、显示装置。功率放大器的电源电压为+5V（电路其他部分的电源电压不限），负载为8Ω电阻。-Class D amplifier design examples to design and produce a highly efficient audio power amplifier measurements and parameters, display device. Power amplifier supply voltage is+5V (circuits in other parts of the supply voltage is not limited to), the load is 8Ω resistor.