Jon_Risch's Web Site

Jon Risch's Web Site

ELECTROMAGNETIC FIELD SIMULATIONS OF AUDIO CABLES, page 2

These are simulations of wires/cables carrying a sine wave at 20 kHz. If the simulation mesh were infinite, it would look perfectly circular in most cases, or at least have smooth even edges. The chunkyness is due to the finite analysis areas, hence there are sections at the gradient demarcations that show this mesh distortion.

Shows the analysis mesh for the coaxial cable, center wire is 18 guage.

NOTE: For this model and the subsequent ones with outer shields, the models use a solid tube of conductor, rather than a mesh/braid, hence the shield is an ideal and unattainable one. However, it will not distort or render invalid the field effects near the center wire/s.

Shows magnetic flux density of a coaxial cable at 20 kHz, 18 gauge center wire.

Note the lower levels of flux in side the wire. The shield is at zero (ground) potential.

Shows current flow density in the 18 gauge conductor at 20 kHz.

Note majority of current flow is at or near the surface of the center wire. The shield is at zero (ground) potential.

Placing the shield at ground potential in the simulation is not going to exactly correspond to reality, but this particular simulator program did not like having the shield carry current in this particular problem set-up.
I may be able to fool it into some semblance of a real world reaction in some future simulations, but the shield would still be unrealistic in that it is still a solid tubular sheath, and not a braid.

Link to next page on EM Field Simulations of Audio Cables

All applicable copyright laws apply, all rights reserved, except transmission by USENET and like facilities granted. Any use or inclusion in print or other media are specifically prohibited. The informational content is not warrantied in any way or form, and any use of said content are at the reader's own risk, the author shall not be held responsible in any way for any damages or injuries arising from the content of this web site. Common safety practices are encouraged at all times. Do not fold, spindle or mutilate.

----> E-MAIL ME ! <-----

Back to home page

Hosted by www.Geocities.ws