What are the circular discs people use on components?


I often see these Circular metallic discs people place on their components. What are they and what are they supposed to do? Are they magnets attempting to reduce noise and are these really necessary? 

emergingsoul

Showing 1 response by asvjerry

OP, both of your last comments are simple to solve, as the 'tech' involved was sorted out decades ago....just not applied by anyone....

See y'all on GoFundMe....😏😎👍