why use audions in the constant current circuit?

[change]

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?
thanks
&lt;center&gt;<img src="http://202.99.23.246/wsrmlt/qglt/niuzhuang.gif">&#65288;/center&#65289;

 

[Robert Baer]

change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?
thanks
center&gt;<img src="http://202.99.23.246/wsrmlt/qglt/niuzhuang.gif">&#65288;/center&#65289;
Sorry.

"The connection was refused when trying to contact 202.99.23.246"

 

[Pooh Bear]

change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

Graham

 

[martin griffith]

On Thu, 21 Jul 2005 10:57:42 +0100, in sci.electronics.design Pooh
Bear &lt;rabbitsfriendsandrelations@hotmail.com&gt; wrote:

change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

Graham
Dr McCoy when they went back in time in star trek

from wikipedia:
the name of a wireless signal detector device invented by Lee DeForest
in 1906,


martin

 

[Fred Bartoli]

"martin griffith" &lt;martingriffith@XXyahoo.co.uk&gt; a écrit dans le message de
news:q73vd1hi3uccur34qn6ujh4k2sl9pc8l34@4ax.com...

On Thu, 21 Jul 2005 10:57:42 +0100, in sci.electronics.design Pooh
Bear &lt;rabbitsfriendsandrelations@hotmail.com&gt; wrote:



change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

Graham
Dr McCoy when they went back in time in star trek

from wikipedia:
the name of a wireless signal detector device invented by Lee DeForest
in 1906,

Well, I first thought these were gold plated, oxygen free phonons.


--
Thanks,
Fred.

 

[legg]

On Thu, 21 Jul 2005 10:57:42 +0100, Pooh Bear
&lt;rabbitsfriendsandrelations@hotmail.com&gt; wrote:

change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

From memory, it seems to be a term adopted in various theoretical
modeling disciplines to describe an overdriven linear circuit that can
produce an output still containing intelligible information - a crude
demodulator.

Last seem used in article about cmos current conveyors, but I have no
electronic article references to offer.

Perhaps the OP could clarify his question using more common terms.

RL

 

[Joerg]

Hello Graham,

What's an audion ?

This used to be the name for a feedback receiver in some parts of
Europe. One where you fiddle with the feedback until you get just the
right selectivity. A good design would have a very gentle transition
into oscillation, ideally without any hysteresis. That would allow SSB
reception.

I built one when I was a kid but it's gone. Wife doesn't like too much
of the old stuff hanging around :-(

Regards, Joerg

http://www.analogconsultants.com

 

[Jon]

I use these for speaker connections...very effective when used in
conjuction with imported galvanized mahogony connectors. When
submerged in water they provide a huge damping factor.
Regards,
Jon

 

[Andy Peters]

martin griffith wrote:

On Thu, 21 Jul 2005 10:57:42 +0100, in sci.electronics.design Pooh
Bear &lt;rabbitsfriendsandrelations@hotmail.com&gt; wrote:

What's an audion ?

Graham
Dr McCoy when they went back in time in star trek

from wikipedia:
the name of a wireless signal detector device invented by Lee DeForest
in 1906,

Hmmmm ... Dr McCoy was played by DeForest Kelley, and the device was
invented by Lee DeForest.

Coincidence?

I don't think so.

-a

 

[Ben Bradley]

On 21 Jul 2005 16:11:03 -0700, "Andy Peters" &lt;Bassman59a@yahoo.com&gt;
wrote:

martin griffith wrote:
On Thu, 21 Jul 2005 10:57:42 +0100, in sci.electronics.design Pooh
Bear &lt;rabbitsfriendsandrelations@hotmail.com&gt; wrote:

What's an audion ?

Graham
Dr McCoy when they went back in time in star trek

from wikipedia:
the name of a wireless signal detector device invented by Lee DeForest
in 1906,

Hmmmm ... Dr McCoy was played by DeForest Kelley, and the device was
invented by Lee DeForest.

Coincidence?

I don't think so.

Definitely not. See my post in the "Beam me up, Scotty" thread.

ISTR in that episode, Bones or someone asked Spock what he was
doing (in a room where he has assembled all these 'radio tubes'), and
he responded with something like "Making a Tricorder out of bearskins
and stone axes." I have little doubt the exact wording is on the Web
somewhere.

Also IIRC, having nothing to do with anything but allegedly part of
the room-sized vacuum-tube tricorder and in the background of one of
the shots, was a Jacob's Ladder.

-a

-----
http://www.mindspring.com/~benbradley

 

[Robert Baer]

Jon wrote:

I use these for speaker connections...very effective when used in
conjuction with imported galvanized mahogony connectors. When
submerged in water they provide a huge damping factor.
Regards,
Jon

You mean a *boat anchor* !!

 

[Rich Grise]

On Thu, 21 Jul 2005 10:57:42 +0100, Pooh Bear wrote:

change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

http://www.cedmagic.com/history/deforest-audion.html

First hit on http://www.google.com/search?hl=en&amp;q=deforest+audion .

Cheers!
Rich

 

[Pooh Bear]

Rich Grise wrote:

On Thu, 21 Jul 2005 10:57:42 +0100, Pooh Bear wrote:



change wrote:

i studied a constant current source circuit showes below,and i don't
understand why there are some audions in the circuit, what effect do
they take?who can tell me?

What's an audion ?

http://www.cedmagic.com/history/deforest-audion.html

First hit on http://www.google.com/search?hl=en&amp;q=deforest+audion .

But not first hit on a google simply for audion which returned any number
of hi-fi links.

Graham