Trinitron gun

[Jeff Layman]

There has been some discussion in another newsgroup about what this
looks like. The Wikipedia entry says "The single-gun consists of a
long-necked tube with a single electrode at its base, flaring out into a
horizontally-aligned rectangular shape with three vertically-aligned
rectangular cathodes inside".

Can anyone supply a link to a picture of a trinitron gun anywhere on the
internet?

TIA

 

[John Smith]

There has been some discussion in another newsgroup about what this looks
like. The Wikipedia entry says "The single-gun consists of a long-necked
tube with a single electrode at its base, flaring out into a
horizontally-aligned rectangular shape with three vertically-aligned
rectangular cathodes inside".

Above that it says: "The Trinitron design incorporates two unique features:
the single-gun three-cathode picture tube, and the vertically aligned
aperture grille."

Which makes sense and I think it is correct.

However I think the part you quoted should be rewritten.

Can anyone supply a link to a picture of a trinitron gun anywhere on the
internet?

The best I can find online is:
http://www.google.ca/images?&q=trinitron gun

But from my bookshelf, the trinitron gun structure (diagram not image,
viewed from above) and a description of how the tube works is in the
1972/1973 edition of Radio and Television Servicing. Do you want a scan
sent/uploaded anywhere?

Old Guy

 

[Fredxx]

Above that it says: "The Trinitron design incorporates two unique
features: the single-gun three-cathode picture tube, and the vertically
aligned aperture grille."

Which makes sense and I think it is correct.

However I think the part you quoted should be rewritten.


The best I can find online is:
http://www.google.ca/images?&q=trinitron gun

But from my bookshelf, the trinitron gun structure (diagram not image,
viewed from above) and a description of how the tube works is in the
1972/1973 edition of Radio and Television Servicing. Do you want a scan
sent/uploaded anywhere?

Old Guy

http://www.tuopeek.com/CRTs.htm is the best I came up with though it doesn't
have a diagram of the Trinitron but of a standard CRT gun. There are some
errors in the article.

I am intrigued how the Trinitron is different.

 

[TTman]

http://www.tuopeek.com/CRTs.htm is the best I came up with though it
doesn't have a diagram of the Trinitron but of a standard CRT gun. There
are some errors in the article.

I am intrigued how the Trinitron is different.

I think it had the RGB guns effectively in one tube. I had one in a
panasonic colour TV in the early 70s

 

[TTman]

I think it had the RGB guns effectively in one tube. I had one in a
panasonic colour TV in the early 70s

Or was it a Sony? I forget now

 

[Mr.CRC]

I think it had the RGB guns effectively in one tube. I had one in a
panasonic colour TV in the early 70s

How on earth could the guns possibly be not in the same tube?

 

[Rich Grise]

There has been some discussion in another newsgroup about what this
looks like. The Wikipedia entry says "The single-gun consists of a
long-necked tube with a single electrode at its base, flaring out into a
horizontally-aligned rectangular shape with three vertically-aligned
rectangular cathodes inside".

Can anyone supply a link to a picture of a trinitron gun anywhere on the
internet?

Google probably can.

Good Luck!
Rich

 

[TheM]

The patent has recently expired and therefore other manufacturers are free to offer similar CRTs.

[snip]

I'm sure that all the LCD and plasma tv manufacturers are overjoyed.

Bob
--

))

But trinitrons were impressive. I remember walking into the living room late at night with lights off and eyes well adjusted to
total darkness and I heard that TV "hiss" from the switcher. TV looked as if it was off and was completely dark, but it wasn't,
wrong video source was selected.
Try that with any other tube or LCD (backlight off is cheating).

M

 

[Jeff Layman]

Above that it says: "The Trinitron design incorporates two unique features:
the single-gun three-cathode picture tube, and the vertically aligned
aperture grille."

Which makes sense and I think it is correct.

However I think the part you quoted should be rewritten.

Yes, I was a bit puzzled by it, but do not have the knowledge to amend it.

The best I can find online is:
http://www.google.ca/images?&q=trinitron gun

But from my bookshelf, the trinitron gun structure (diagram not image,
viewed from above) and a description of how the tube works is in the
1972/1973 edition of Radio and Television Servicing. Do you want a scan
sent/uploaded anywhere?

Not at the moment, thanks, John. The link you supplied was ok. Many
sites discuss the nature of the aperture grille and show diagrams of how
this is constructed, but it is strange how few show the other unique
feature of the trinitron tube!

 

[John Smith]

Yes, I was a bit puzzled by it, but do not have the knowledge to amend it.

Actually I think that the part which does make sense should say that the
aperture grille is horizontally aligned. The aperture grille is not
vertically aligned. The tube would be a mile high if it was. The cathodes
are also horizontally aligned.
It could be that whoever wrote it knew what they were talking about but
didn't write very clear English.

Old Guy

 

[Fred Abse]

But trinitrons were impressive. I remember walking into the living room
late at night with lights off and eyes well adjusted to total darkness and
I heard that TV "hiss" from the switcher. TV looked as if it was off and
was completely dark, but it wasn't, wrong video source was selected.
Try that with any other tube or LCD (backlight off is cheating).

That's not the tube, it's down to accurate black level maintenance. Any
CRT will do that with the right circuitry.

 

[Rich Grise]

That's not the tube, it's down to accurate black level maintenance. Any
CRT will do that with the right circuitry.

I used to work on video games, and adjusting the monitor was a dream -
there were four one-turn trimpots on the neck board, with red, blue, green,
and black knobs. The black one was "black background."

Of course, they were WAY too expensive to use the same kind of circuit in
consumer TVs.

Cheers!
Rich