Whats Those Big "Weights" on Each End Of My HDMI Cable?

[weezlewozzle]

Originally Posted by jermwhl

Ferrite. They are called ferrite chokes. They basically filter noise from electronics.

http://www.patentstorm.us/patents/7057475.html

I was told magnets, but this makes a heck of a lot more sense.

[crackinhedz]

Originally Posted by weezlewozzle

I was told magnets, but this makes a heck of a lot more sense.

well, it is a magnet.

Ferrite cores are used in electronic inductors, transformers, and electromagnets where the high electrical resistance of the ferrite leads to very low eddy current losses. They are commonly seen as a lump in a computer cable, called a ferrite bead, which helps to prevent high frequency electrical noise (radio frequency interference) from exiting or entering the equipment.