Hello.
I've read that common mode current (maybe noise) flows on outer layer of the outer shield of the coaxial cable and normal current as differential mode current flows on central conductor and inner layer of the shield in coax. I don't understand why the common mode selects outer layer of its path and why normal current is 'closely' confined?
I'd uploaded similar question before but...I didn't get clear answer.
I've read that common mode current (maybe noise) flows on outer layer of the outer shield of the coaxial cable and normal current as differential mode current flows on central conductor and inner layer of the shield in coax. I don't understand why the common mode selects outer layer of its path and why normal current is 'closely' confined?
I'd uploaded similar question before but...I didn't get clear answer.