When an appliance is in use small sparks are generated at mechanical contacts, such as those found in switches and the junction between motor brushes and commutator. This results in the emission of spurious radio waves that can be heard as crackles on radio or television receivers or that are passed down the mains circuit to audio equipment. The suppressor is designed to eliminate the formation and transmission of these spurious radio waves. They are also known as mains filters. Read the rest of this entry »
