John Curl's Blowtorch preamplifier part II

[scott wurcer]

Nope Bybee's

Bybee Internal Speaker Bullets Kit

Call and ask for shipping to Russia (no problems). 😉

 

[wintermute]

Why are we talking about copper resistivity? Surely it has been determined that all we require for audio purposes is conductivity somewhat better than mud?

I actually rated the mud more highly than the steel wool.... salt water was crap though. 😛

Tony.

 

[john curl]

I am using something similar at the moment.

 

[QSerraTico_Tico]

The price is right....

Nope Bybee's

Bybee Internal Speaker Bullets Kit

The price is right... for the manufacturer that is 😀

 

[jan.didden]

Yes, a contributor to Jan's publication, like you.

A dangerous course John. By that reasoning you will conclude that whoever isn't published in Linear Audio is not very trustworthy/convincing.🙂

Jan

 

[scott wurcer]

Yes, a contributor to Jan's publication, like you.

I hope Jan doesn't let him talk about wires. 😉

 

[jneutron]

I hope Jan doesn't let him talk about wires. 😉

If he replays that bad skin effect paper, I'll be writing a letter to the editor.

jn

 

[Steve Eddy]

So John, what journal was van den Hul's work published in again? I seem to have missed your answer the first time.

se

 

[Triodethom]

Plus annealing improves the flex life of the wire.

se

That was the point WE (the Phone company) appeared to stress ( no pun intended) .

 

[jneutron]

So John, what journal was van den Hul's work published in again? I seem to have missed your answer the first time.

se

The Journal of Irreproducible Results

jn

 

[Steve Eddy]

The Journal of Irreproducible Results

Ah. Thought perhaps it would have been here:

Frontpage - Market Community

se

 

[SY]

If he replays that bad skin effect paper, I'll be writing a letter to the editor.

jn

Nope, he wrote about analog filters.

 

[Kindhornman]

If I remember correctly wasn't the Vandenhul wire based on a carbon fiber or carbon impregnated wire. He gave me a set at one of the CES shows, they looked like spark plug wires, I gave them away soon after.

 

[keantoken]

I was actually wanting to maximize skin effect in a conductor for experiments. I chose graphite pencil lead since it had appreciable resistance and the thickest conductors have the widest skin-effect region.

However I couldn't measure skin effect in it at all! I was quite sure I wan't doing it wrong. I had a resistor I was comparing it against. I figured it might be because it wasn't a homogeneous conductor, so I decided I'd try nichrome wire next. I don't have any though.

 

[SY]

Keantoken, other way around. You want high conductivity to maximize skin effect.

 

[keantoken]

Also, what about plating a conductor with a RESISTIVE material, so that it's lossy at RF? This might help with RFI. I'd sure like to see something like that. It would be like a big long L//R except it would also help with the resonance modes of the cable.

 

[keantoken]

Keantoken, other way around. You want high conductivity to maximize skin effect.

But the equations I found only described skin effect as a multiplier for the resistance of the cable, independent of the resistance itself.

 

[a.wayne]

If I remember correctly wasn't the Vandenhul wire based on a carbon fiber or carbon impregnated wire. He gave me a set at one of the CES shows, they looked like spark plug wires, I gave them away soon after.

Did you try them ..?

 

[Kindhornman]

A.Wayne,
Of course I did. Couldn't tell them apart from a set of cheap Radio Shack connectors. Perhaps I didn't break them in long enough or I had them turned around and the electrons were going in the wrong direction. 😀

 

[a.wayne]

Direction is important, once had a lost electron text me for a pickup ...