“一点接地”对电子爱好者来说无疑是耳熟能详的事了,采用“一点接地”可以最大限度地降低干扰信号对放大器的影响,是提高信噪比的有效方法。但许多朋友在自制功放时,有时很难把握关键的接地位置和接地方式,往往无意间又形成了重复接地和多点接地,令人厌烦的噪声也就不可避免的像幽灵般地重现出来。对于功放制作中产生的交流 “A little grounding” is undoubtedly a familiar thing for electronic enthusiasts. Using “a little grounding” can minimize the influence of the interference signal on the amplifier, which is an effective way to improve the signal-to-noise ratio. But many friends in the self-made amplifier, and sometimes difficult to grasp the key grounding location and grounding, often inadvertently formed a repeat grounding and multi-point grounding, annoying noise inevitably like to reproduce ghostly . For the exchange produced in the amplifier