Home General Asylum

General audio topics that don't fit into specific categories.

Re: hmmm.

sean: ""
While the nominal impedance of the cable that you mentioned is pretty reasonable, the capacitance per foot is too low / inductance per foot is too high. ""

Inductance too high?? What kind of parallel wire are you talking about that is below that?? Remember, we're talking about a cord that must withstand 6 kv transients, so the insulation is certainly not very thin.

Did you mean the other direction??

And I was being generous with EDC, real values would bring capacitance down. Do not forget, that was not a measured value, but a generic one with the equation to calc the capacitance...(hey, he was pingin for equations, so I did..:-)

RFI...I condider any energy transfer which satisfies energy balance and therefore, the wave equation, as being "planar".. (did ya know that transmission in any media or cable at it's propagation velocity requires the e and m field energies be equal?...tidbit..)

Any field which does not satisfy energy balance, I consider EMI.


Star: You are the first person I am aware of that hates star ground techniques. It is an excellent technique when high impedance circuits are involved (aka tubers)., but sucks big time for low impedance ones (aka zistors, ala power stages, and when big loop areas or rich magfield areas...).

I wuz not aware you made a livin doing this stuff..I'll send ya my bill...(note, I made it easy for you, I highlighted the billable items in red for you..:-)

Cheers, John

ps..I crack myself up sometimes..It's a shame that while others do indeed laugh, I don't think it's with me...:-)



This post is made possible by the generous support of people like you and our sponsors:
  McShane Design  


Follow Ups Full Thread
Follow Ups
  • Re: hmmm. - jneutron 08:21:06 02/14/07 (2)


You can not post to an archived thread.