Trevor Wilson wrote:
>
> "Patrick Turner" <info@[EMAIL PROTECTED]
> wrote in message
> news:47DD0B84.E12FE8B9@[EMAIL PROTECTED]
> >
>
> <SNIP>
> >
> > More about noise and its causes is in RDH4, and because j-fets were
not
> > invented in 1953
> > when RDH4 was being written, I suggest interested ppl search on the
net
> > and read many books to put themselves
> > in touch with what makes a quiet preamp.
>
> **Thanks for all that, Patrick. As always, very interesting. Just a
minor
> nit-pick though. FETs have actually been around for a long time. A very
long
> time. Here's a few patent references:
>
>
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=US1745175&RPN=CA272437&DOC=ca9239e0872ee7a55e19d3915900a7771e
>
> http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB439457
>
> Of course, neither device was commercially available. Imagine if people
had
> paid attention to this technology back in the 1930s. Having said all
that,
> practical FETs did not arrive until around 1958. Long after RDH4 was
> written.
It has been said by some folks that had someone been able to make a
reliable and
useful and saleable j-fet or mosfet devices before the germanium
transistor was
invented then nobody would have bothered with germanium.
Germanium transistors were rather awful creatures and every real tubeman
laughed at them.
Then came the silicon variety, and nobody laughed any more, they cried
instead.
The consecutive discoveries only became im****tant when there was an
application,
and now developments spur applications, and applications spur
development,
and as a species we have learnt to develop many things just for the heck
of it because a
good use will come along soon enough and money can be made.
Usually good uses are defined as being initially useful to the military,
so its all a sham anyway.....
Now the boffins are into quantum computers and goodness knows what they
use,
but the holy grail is to have a computer
not very big, that can operate like all the PCs now in the world
combined,
only 1,000 times faster. I dunno what the basic unit is, certainly not a
fet, triode or anything I know.
The CIA will be able to send a remote nano bot to your toilet seat and
relay
messages back to the Pentagon about who else other than yourself had a
****
this morning, and then work out whether anyone had any rotten
anti-establishment thoughts
over a glass of plonk the night before.
Other nano bots can be sent in to take you out, and unless you have a
country as powerful
as the US, or as China will be, then youse got no chance.
Never mind 1984, wait until 2084, or 3084, and then the fun really
begins,
but you'll think its just normal......
The trouble is that the Universe contains an infinite amount of
information
about its own composite nature and about what goes on at every part of
it
including the billions of planets with life like/unlike ours.
Humans have only tiny little finite brains, only very recently
evolved from apes, so we have an increasingly difficult task ahead of us
to know
more about how the Universe and all its matter ticks and tocks.
So we need to have more powerful computers and better devices.
Meanwhile, a lot of wisdom could be classified as noise because there
isn't
much of a positive result; the more we know, the bigger the mess we make
of the planet, and each
advance against noise, polution, inefficiencies, corruption simply
leads to more negative activities that have not been reformed.
So when we got computers, everyone was fascinated, and they never
bothered to fix all the other problems.
So if we had free non polluting energy, we'd all have money left over to
spend
on more timber for houses, and dang, there goes the last bit of forest.
So having less noise in amplifiers and all the other gear spurred the
the recording
and broadcasting industries, and while musing with music, we forgot to
solve other problems.
Somebody rich and famous and able to go to the theatre
each night of the week said in 1890, when the first phonograph was
played,
" Damn it George, now we'll have to put up with this rubbish being able
to be heard again and again. "
There was a time when an average person might have heard an orchestra
about an average of
0.85 times in a lifetime, and had to put up with the noise at the local
pub.
For the Godly, who never went to Pubs, there was **** all else to do at
night,
and not many folks about, so blokes just blew out the candle and had
another root, and
very soon too many people were about.
If only we could fix all the problems like we fixed amplifier noise,
than we all decided to have less instead of more.
This would be a real triumph for hu-manity,
and hu-womanity.
Patrick Turner.
>
> Trevor Wilson
|
