Fountek NeoCD3.0 Ribbon Replacement

[lowmass]

the spray is a light viscosity that works best for sanding and cleaning. I spray a bunch in a puddle on a clean surface and wait 10 min for solvents to evaporate, then use.

The paste is messy and not to good for the sanding with oil process

 

[TimA]

I've done another with corrugated foil and contacts finely sanded then coated finely with silicone lubricant. This time the foil is marginally narrower than my earlier wide one but still quite a bit wider than stock. The resulting impedance sweep is now lower than before but still higher than stock. See attached graph.

I'd like to understand the relationship between the impedance of the foil to the impedance seen by the source on the input side of the transformer, as what must be minuscule differences on the foil side seem to translate into much larger ones on the other. Any thoughts there?

Tim

 

[Wikkid]

I wonder if anyone has tried Beryllium foil???

Like from here:
Beryllium Foil Be Foil For Sale | Stanford Advanced Materials

 

[audiogod66]

Like from here:
Beryllium Foil Be Foil For Sale | Stanford Advanced Materials

Pioneer used beryllium foil ribbons and they ask silly money for them so has been used before - no way would I be touching the stuff

 

[Wikkid]

Doesn't look like it would be THAT expensive from that site.. in small amounts.
Particularly when you consider the price of something like the Raal ribbon!

 

[lowmass]

I see no advantage to using Be. Its heavier and higher resistance than Al

 

[lowmass]

sorry was thinking of Titanium
anyway Be is a bit lighter than Al, however its resistance is about 40% higher per volume so its a wash in the sensitivity department
Be is about 4-5 times stiffer than AL which could help raise the resonance a bit in corrugated structures. Maybe some advantage here. maybe
and crack resistance could be some advantage in really high power application

That said I see no advantage worth getting excited about