[sdiy] Choosing an OTA for VCA

[Neil Johnson]

> > The SSM2164 is a current part, and very useful :-)
>
> Can't be... it's "current" so it can't be usefull when we are into beyond death
> silicon or other technologies. Only what was around when it was around is good
> enought.
>
> (It's all irony...)

I know they use copper for silicon interconnects, but I'm not sure about
iron (lower losses than aluminium, and looks nicer when polished---very
important for those publicity die-shots :-)  Iron is good for making
hammers, but trying to make those little thin interconnects in a forge is
_very_ tricky indeed (you just can't get skilled dwarves these days).

Personally I prefer currant devices (buns, cakes, etc) as they taste nicer
than current devices (the little chips get stuck between the teeth).  BUN
transistors (as opposed to BJT) come in a wide variety of types---hot
cross (great for adding "warmth" to an amplifier), rock (ideal for guitar
amps), Chelsea (tend to be squarer with a sticky topping, best used in
memory circuits as it takes ages to lick the sugar off your fingers) and
so on.

And whatever happened to Geranium transistors?  Similar to Germanium but
prettier, although they do have a habit of dying if you don't water them
regularly.

Neil
(in a "silly-Friday" mood...can you tell?  Can you?  Ooh, no you
can't....ppttbbhhh!!!!!)

--
Neil Johnson :: Computer Laboratory :: University of Cambridge ::
http://www.njohnson.co.uk          http://www.cl.cam.ac.uk/~nej22
----  IEE Cambridge Branch: http://www.iee-cambridge.org.uk  ----