Light Emitting Triode

[[email protected]]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

 

[Phil Allison]

<[email protected]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

** Google is chock full of papers and tech info on the device.

You blind ??


.... Phil

 

[Sjouke Burry]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

The old-fashioned tv/monitor tube.

The "cats eye" tuning light on old radio's.

The ringcounter display tubes in counters.

The plasma Tv tube, contains about 600.000 of them, each pixel
a small emitting tube.

 

[Martin Riddle]

The old-fashioned tv/monitor tube.

The "cats eye" tuning light on old radio's.

The ringcounter display tubes in counters.

The plasma Tv tube, contains about 600.000 of them, each pixel
a small emitting tube.

Magic Eye toob

Cheers

 

[Arie de Muynck]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

VFD - Vacuum Fluorescent Display.
http://en.wikipedia.org/wiki/Vacuum_fluorescent_display

Each segment is a triode:
(part of) the filament
(part of) a grid
one anode (the part that lights up)

Arie de Muynck

 

[Rich Grise]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

If you supply enough voltage and current, almost almost any triode
will emit light, for a short period of time. ;-D

Cheers!
Rich

 

[Jan Panteltje]

If you supply enough voltage and current, almost almost any triode
will emit light, for a short period of time. ;-D

Cheers!
Rich

All tube triodes emit light from the heaters.

 

[Jan Panteltje]

http://www.scientific.net/MSF.663-665.791

Yes, true, but did you know you cannot buy those field emission displays anywhere?
I think it is just an other 'nano nano' invention, that works in the lab,
but has too many practical problems to be used.
Maybe it just sucks electrons from that so called 'cathode'.
That would also happen if you bring the anode close enough (contact).
They may even invent the field effect transistor LOL.

Too many tissue papers leading to dead end roads.

A very big manufacturer gave up on it and sold the patents to some other big one,
who probably will fail too.
Good chance if you sneeze next to such a display with the electrodes so close,
you permanently damage those 'points'.
We used to call that 'arcing' in the last century.

Crap.

 

[Jan Panteltje]

Oh, my...

I guess everyone should run all their ideas by you, for your
imprimatur, before they bother to do any work on them.

Would not be a bad idea in some cases.

 

[TheGlimmerMan]

There must be a lot of big money and a huge ROI
in obtaining tighter video resolution, more brightness
and more color depth.... Right?

Plod along much, as you stumble through life on the coattails of those
who know?

Backlighting is white. The LCD panel does the coloration. Applying
colorations to portions of the backlighting plane would only complicate
input requisites. OLED was a start on a panel that requires no
backlighting. THAT will be the direction we move toward. Not OLED per
se, but directly illuminated pixels with no backlight requisite ala OLED
will be. The only problem OLED has is longevity or it would already be
mainstream.

 

[TheGlimmerMan]

I'd love to know what pixel sizes they are working with so far are.

 

[Artemus]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

Can you post the reference? It may be nothing more than a
dual red/green LED that some marketing/advertising weenie
got creative with and called a LET.
Art

 

[Jamie]

Everyone is familiar with the LED (Light Emitting Diode), but I
recently saw a reference to a Light Emitting TRIODE. LET
Does such a thing exist? I could not find anything useful with
google. If it does, what does it do that a LED cant?

You've been had! ;0
http://www.opticsplanet.net/gerber-gear-0005.html

Triode as you most likely already know is a 3 element tube.

I could be wrong how ever, history tells me that it's latin for
3 what ever.

I don't think a "triode" tube could be exclusive in it's use!

But then again, I could be wrong!

I am sure Sloman will confirm that !


Jamie

 

[Don Klipstein]

---
What difference does that make?

The point wasn't whether field emission displays are commercially
available, it was that there are _some_ triode tubes that, having no
heaters, _don't_ emit light from their heaters.

<SNIP from here>

How about another example of a non-light-emitting triode? Vacuum tubes
made with metal "bottles" rather than glass ones!

Such as 6SN7 dual triode, where the glass bottle version is 6SN7GT
("glass tube") IIRC.
Unless one wants to argue on basis that the light is emitted after all
while not escaping the electronic component where it was generated.

 

[Don Lancaster]

Can you post the reference? It may be nothing more than a
dual red/green LED that some marketing/advertising weenie
got creative with and called a LET.
Art

Actually, you should be able to get SIX colors out of a three legged LED
assembly. A LED hexode?

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: [email protected]

Please visit my GURU's LAIR web site at http://www.tinaja.com

 

[Jamie]

Can you post the reference? It may be nothing more than a
dual red/green LED that some marketing/advertising weenie
got creative with and called a LET.
Art

How about a head lamp with 3 LEDs in it (Triode)


Jamie

 

[Jamie]

Can you post the reference? It may be nothing more than a
dual red/green LED that some marketing/advertising weenie
got creative with and called a LET.
Art

Of course, there are "tri-color LEDs"

 

[Arie de Muynck]

VFD - Vacuum Fluorescent Display.
http://en.wikipedia.org/wiki/Vacuum_fluorescent_display

Each segment is a triode:
(part of) the filament
(part of) a grid
one anode (the part that lights up)

Reading further, it is indeed useable as a triode:
http://www.eham.net/articles/20582
http://www.eham.net/articles/20809
http://www.5volt.eu/archives/62
http://www.b-kainka.de/bastel72.htm

 

[TheGlimmerMan]

Reality shucks...

 

[[email protected]]

There are SEDs, smoke emitting diodes. Dark light emitting diodes,
shadows must lit, I guess. And so on.

Dark Emitting Axial Diodes