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why use audions in the constant current circuit?

P

Pooh Bear

Jan 1, 1970
0
change said:
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
 
M

martin griffith

Jan 1, 1970
0
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
 
F

Fred Bartoli

Jan 1, 1970
0
martin griffith said:
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.
 
L

legg

Jan 1, 1970
0
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
 
J

Joerg

Jan 1, 1970
0
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
 
J

Jon

Jan 1, 1970
0
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
 
A

Andy Peters

Jan 1, 1970
0
martin said:
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
 
B

Ben Bradley

Jan 1, 1970
0
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.
 
R

Robert Baer

Jan 1, 1970
0
Jon said:
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* !!
 
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