Largest CRT Ever Built?

[jhalphen]

Hi Sandy,

Atmospheric pressure would be in the 50 metric ton bracket, and close to the limit glass can resist to.

Best Regards

jhalphen
Paris/France

[Sandy G]

Kinda what I figured, Jerome.

[freakaftr8]

If you tap on the face of my KV40XBR800, you will notice the color fringe and deflection of the tension on the aperature grille flicker for darn near a minute!

[ChrisW6ATV]

Originally Posted by rroobbcc

Mitsubishi was the first to mass market a 40" CRT TV in the early to mid 90's. I also remember around the same time reading about a Sony that was available on special order from Japan. I remember that being a 46", but it could have been the 43" mentioned elsewhere in this thread.

The announced size would have depended on the country where it was to be sold. The USA is (I believe) unique for having a law that requires a TV set's advertised size to be its actual picture area and not the size of the CRT itself; this law started in the mid-to-late 1960's. I have seen reference to Sony 27" TV sets that were called 29" sets in Canada, for example. The 43" Sony could quite likely have been labeled a 46" set outside the USA.

[Wizard256]

Law wasn't.

About 1 inch or so less than claimed size. Same with CRT monitors for USA and Canada. LCD and plasma now true size.

Cheers, Wizard

[Reece]

I have a 4-year-old 36" Toshiba that we watch daily. I'm going to try to forget about the gargantuan potential catastrophe of the pressures eternally gnawing at the tube.

[JB5pro]

Originally Posted by jr_tech

Here is a picture of the 43" 4:3 Matsushita CRT scanned from page 191 of "The Cathode Ray Tube' by Peter Keller.
jr

(sorry about the Moire pattern)

I guess there is a special heavy duty brace on the back holding the thing up. Surely that is not resting on it's neck? I am guessing the neck is modern small but it looks like it should have a roundie neck on it.

[wa2ise]

Originally Posted by jr_tech

(sorry about the Moire pattern)

A way to avoid such is to scan the original at a much higher resolution, then in a photoediting program, low pass filter the scan, then shrink the picture to the desired size.

[aidynphoenix]

you guys talking about it imploding reminded me of something from my childhood..

a few streets away from mine me and 2 friends went into a house that burnt down and it sat for months . we looked around for awhile, half of the roof was still up and we found a large tv.. must of have been around 26" the screen looked greyish green instead of the regular black..
we were being immature and trying to break the screen with rocks.. i threw a huge heavy rock at it that i could barely lift.. it didnt break it... yet my friend chucked a small sharp rock at it, and i heard a awesome explosion. it felt like sombody punched me in the chest.. it didnt hurt, it just moved me some. i was probably about 10yrs old at the time.. from what i remember,, it was louder and deeper than your regular artillery shell fireworks.
we ran away...

[Zenith26kc20]

a .22 caliber bullet on a old 14 inch Philco tube worked wonders! No piece bigger that a 50 cent piece. Amazing.....

[Red October]

In my highschool we had what I recall as 41" (I am likely wrong but they were 40 or over) RCA sets in every room, complete with panasonic VCRs and those nifty computer-controlled Laserdisc players. I have several of the players now, that I got from elsewhere, but I do remember those sets being massively heavy. One was in poor repair and constantly made a high-pitched whine; I remember it making me quite nervous because I wasn't sure what the whine was (probably a PS fault in retrospect) but I understood very well about the amount of energy stored in a tube of such magnitude.