在音频功率放大器中，音量控制是必不可少的环节，尤其是现在用微电脑控制的多通道AV 功放，一般都采用一枚多通道音量控制芯片进行音量调节，而且根据标准要求：每个通道音量既需要总调又需要单独微调。脉冲电位器能够360 度旋转，音量调节速度可编程控制，它寿命长、不产生噪声，电路简单，这都是碳膜电位器无法比拟的。-In the audio power amplifier, volume control is an essential part, especially now with the microcomputer-controlled, multi-channel AV amplifier, generally use more than one chip-channel volume control to adjust the volume, but according to the standard requirements: the volume for each channel need both the overall tone also require a separate fine-tuning. Pulse potentiometer can rotate 360 degrees, adjust the volume rate of programmable control, it is long life, does not produce noise, simple circuit, this is carbon film potentiometer can not be compared.