Smallest commercially made CRT in the world and it works
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- เผยแพร่เมื่อ 29 ธ.ค. 2024
- The smallest commercially made picture tube with magnetic deflection. 1/2" diagonal screen size.
Here is a link to the smallest full color CRT TV ever produced.
• Smallest Color CRT TV ...
![Gaming On a ½" CRT TV [LGR Oddware]](/img/n.gif)
You know it is adorable when the yoke is larger than the CRT.
Now you just need 3 more of them and you can make a CRT digital clock, one per digit.
or you can just use one dumas
Terrifc idea. Sort of the 1980s version of Nixie tubes. You could mount them vertically with a mirror above each (periscope-fashion) and maybe a Fresnel lens if you wanted the clock to look like a retro-futuristic prop from Terry Gilliam's Brazil: th-cam.com/video/ERI_5nFOPXg/w-d-xo.html
Hack it to display vectors and make the smallest Asteroids machine on Earth.
lol thats the kind of stuff i do on my channel. iwill do that by the way
@@ArcadeJason Awesome! I watch your channel regularly, can't wait for the micro vector hack!
Ken Colangelo Doom ??
I'd prefer Tempest please.
Wow, a doll house tv.....A every little girls dream to have a actual working tiny tv in their doll houses. LOL
Haha.. what an awesome idea!
The length to width ratio makes it a little awkward for that though. Probably better off finding a small LCD or OLED screen
What little girls are building dolls houses set in the 1950's?
tin2001 - When I was a little girl, I actually had a doll house from the 1950’s. 😀
smeezekitty - True, it was a funny suggestion & would’ve been cool if I still had my old 50’s doll house from my childhood. My 11 year old twin daughters just have a modern plastic doll house. LOL 😂
awww, how cute ! I've been playing with CRT projectors since around 2001, and always wondered what hatchlings looked like before they grew up to be full sized 9" tubes like I had in my Barco's ;)
i had a sony video camera in about 1998, there were two choices back then colour or b&w viewfinder, the colour ones were lcd based and a very low resolution and contrast, the smart choice was the B&W crt as it was sharp.
The LCD screens were crap. Even the one on my HDR FX1 HD camera was total crap.. The OLED eye piece on my FDR-AX100 is fantastic.
For a decade or two after broadcast color TV cameras were in general use, the viewfinders were always monochrome CRTs because that is what allowed the camera operator to get the best view of the focus adjustment. Only after very fine-pitch LCD screens were available did broadcast gear start using them. Of course, for broadcast cameras, the exposure (iris and black-level) and color shading was done back in the control room, so there was no reason for the camera operator to see anything in color. Even today with color LCDs, there is a monochrome mode that many camera operators still prefer.
This is correct. A black and white monitor is much higher resolution, in fact there is no resolution limit on a monochrome tube because the screen is a uniform phosphorus coating. In the broadcast monitors the 2nd anode acelerating voltage is also much higher to produce a much smaller spot (and more XRAYS because who cares if we give the operators a brain tumor) I am not joking about that either. 2 friends that I worked with when I had a brief broadcast career before heading in the engineering direction went on to be camera operators at a local TV station. Both developed brain tumors. My neighbors son worked at Pixar and worked on the movies toy story and finding nemo. It would sit for 16-20 hours a day in front of a silicon graphics 20" high res CRT while animating. He died of cancer in both his liver and pancreas .
CRTs used in professional applications were driven much harder than consumer sets. Anyway back to the camera view finder. Unless it was an ENG setting the operators job was to frame and focus. Levels were done by the video operator, monitoring the cameras using waveform and vector monitor scopes. Modern cameras use OLED viewfinders. 2 of my high end cameras have OLED and the quality is simply amazing.
Yeah, I have one of those...about 1995 model....tiny B/W CRT tube in there
Jusb1066 crts can be REAL sharp!
That is so awesome. I collect these little monitors and I actually have one smaller than that. It is a round screen tube and fits in an Altoids tin with lots of room left over.
Upon further examination, my little CRT might be the same as his. Mine is just the CRT with no yoke on the neck. If I could upload photos here I would share it. My little round screen tubes are a bit larger than this little 1/2" square tube.
Johnny Umphress any pictures?
Let's see it.
Hush Roll Having trouble uploading a photo here but the tube is an NEC brand C1M40P45. There is one picture of one online that I could find. I came out of the viewfinder of a compact cassette video camera.
Correction; I have a CRT even smaller than that. It is a Citizen brand no. MO1JVY50WB. If someone will explain how I can upload photos here then I will share.
@@JWimpy use imagur just upload a photo and then open photo in new tab then copy the URL and paste it here
Don't forget to Smile OK, I'll try that.
man that'd make a cool 5.25" bay temp/state display for a fallout 1/2 themed custom PC with some tube valves
When I was servicing SDI and NTSC Sony broadcast cameras with the B&W viewfinder the viewfinder tube was something like 1 inch. I used to change the tubes when they went defective. The viewfinder assembly had an adjustable magnifying lens in front of it, that was retractable for direct view. This was amazing technology in its time. The cameras of today are using LCD screens in their viewfinders. The CRT's I was changing were made by Citizen, and Hitachi depending on the series. They stamped the Sony name on them. If I remember correctly, the small CRT's I was changing were working on about 3 KV.
Awesome. Did u save any old parts?
Still have a Panasonic camcorder that uses the old crt tube viewfinder 😂
Love it. It's got a yoke and everything you would expect from a full size tube, I am particularly impressed with all the shuffle rings. You really should have stuck a testcard generator on it and done a full alignment. ;)
For sure. That would be less massive and far smaller. :)
I wouldn't be surprised to find the tube actually has RGB guns and a shadow mask to match, but they decided to shave a few dollars and only drive it black and white!
I can't think of any other reason not to go with a typical oscilloscope style tube.
RGB mostly requires three of everything in the gun assembly (except 3-cathode-single-lens and beam index tubes, both technologies were used by Sony but still too bulky for a 1/2 inch CRT). No space for that in this small a tube. Also the shadow mask and phosphors would be very hard to produce. Back then, it was already cheaper to use a rather coarse LCD RGB monitor which was available in some models but not very popular due to the same lack of resolution a colour CRT would have had.
Made in Japan...the best..
*secretly watching anime*
@@epicool6527 *on a half inch CRT*
@@RetroOnSpeedDial Back to the future reference.
Hard to believe this little X-ray emitter was deliberately designed so that people would press their eye right up to it.
Due to its size, the high voltage is no where near that to produce X-rays. Would sting like hornet if you touched it tho....
For a tube this size, a good guess would be anywhere from 500 volts to 1000. A general "thumb rule" is about 1000 volts for every inch of screen diameter give or take about 50%. Looking at how close he got his fingers to it without drawing an arc, it's obviously not as high as a full size set. Those suckers can jump an arc to YOU about an inch or two easily. I got hit once that way.
😂
And no I'm not crying because I'm laughing but from the x-rays
Jk lol
P: A tiny viewfinder CRT that I scavenged for a similar project shone into a mirror in its original application - I had to reverse two of the yoke leads to get the picture right.
Presumably this was so you weren't looking directly into the CRT.
@@lochinvar00465
The small 1.5 color crt I have run the crt at around 10k.
I should tear down the viewfinder of my old broadcast camera and see what the high voltage is on that. I bet it is at least 10k. This one i would guess it is in the 1-2 if range. Look at the insulation on the hv wire. Unfortunately I dont have an hv probe so I cant measure it.
Pretty slick; I never even considered how impressive the tech was that made the early Camcorders possible. Thanks.
Finally. We can make the Handheld Vectrex that GCE dreamt of.
That is awsome, you have such confidece when jumping into an unknown piece of electronics, guess i need quite a few more years experience before I become as confident as you. Thank you for sharing this amazing mini crt resurrection with us.
Search for bargain random electronic stuff on ebay, craigslist, etc. This way you can get a lot of experience, without the hazard of damaging valuable stuff. I think this can speed up getting more experienced, because if you have an idea but you're not confident in it, you can try it anyways, it doesn't matter if you screw it up. But always check what you are dealing with - sometimes you can get valuable stuff for bargain, which is better to be repaired and reselled instead of torturing it for getting some experience :) .
When i was younger i was very interested about electronics and IT so i learn myself both.
what i see now here is you reborn the kid me(in the '90s) ,thank you so much for your video was as a "DEJA VU" current !
Thanks man ,you're the best !!!!
You've inspired me to buy the same broken camcorder! I have the TV out, but not sure if i need a PAL converter here in the UK. One thing i didn't understand is why you didn't need to use a return line for the r.f. in. Just like an aerial i guess. I have a lot still to learn!
It's baseband video and will display pal or ntsc.
I have a few scrap camcorders with these tiny CRT's, it would be cool to make a model of a 1930's mirror lid TV!
The tubes they used were so long that they were mounted vertically & viewed via a mirror, these tiny tubes would be scale replicas.
Well, CRT are valves.
I was always amazed that they made valves as big as normal TVs.
These are from VHS and other handheld cassette video recorder, my grandfather has one and the CRT is still working.
I doubt it that it can record as good as before.
Awsome vid... Back in 1985 we fitted an rf tuner to a mono camcorder viewfinder & made a tv that fitted in a component drawer....
RIP CRT's.
Those of us lucky enough to experience you will never forget you
-multiple resolutions on one monitor
-amazing framerates without ghosting
-the eye strain after being stared at for hours straight (your eyes would water when you closed them)
-the convenient way that you could sit on a car seat upside down and be restrained by the seat belt
-the degauss button
You forgot to mention the low dose of xrays every time you sat in front of it.
dude once i heard the beep tone, i knew u were using a fluke, and not any fluke. THE MODEL 12
Attach 2 of these to a pair of goggles for a Steampunk VR visor.
More like early 90s cyberpunk lol.
I have a couple of those tiny tubes somewhere. They are from viewfinders. The don't work but I was pretty amazed when I took the assembly apart and realize they were CRTs
Really surprised that we're not seeing scan lines when you hold it up to the camera.
Made by Miyota, which is part of Citizen. Not surprising since Citizen was a major player in those miniature CRT-based portable TVs back in the day.
They also made some of the best watches
The Miyota division of Citizen makes watch movements.
These were used in some military night vision equipment for various scopes as well. I used to perform alignment and testing on these at a crt manufacturer in NY
Good
I haven't found a reference to the manufacturer yet, could very well be Miyota even though Sony liked to do things themselves. The model number of the CRT was briefly visible, though, so maybe sometime a datasheet will turn up: M01KXX90WB.
I like old CRTs, but really hate that ubiquitous tinnitus sound when you are around one.
Yup, those tiny little tubes are cute, and I think they also have a round face, the plastic on the front only lets you see a square.
Fascinating world of electronics. How playing around with small currents achieve big things.
Fabulous! What does the video signal look like that you supplied to it?
What a beautiful piece if kit. A real work of art that I could look at all day. If anybody has to ask "why?", there is something wrong with them.
It is! Very cool, and a real marvel of engineering. I have it in a small plastic case with a power supply on it now, and video in jack so I can power it up and display a picture on it any time I choose.
Best video ever seen and respect your technical skills that made it work
Wow! As you say a work of art! They literally don't make them like they used to. Great video.
It is indeed a work of art :-)
Might put it back in the cabinet with the magnify lens and use it to check the camera in the atic that points at the rat trap.
No matter what is the technology is right now i always get fascinated by crt how it works
What resolution can it display? Now, use it to make a computer monitor, with a few big lens in front of it like in Brazil :-)
Analog doesn't translate directly into digital, of course. The best digital you could realistically hope for in this CRT would be VGA (640x480) or SVGA (800x600).
More likely you'd be looking at some sort of NTSC, PAL, or SECAM stuff ... common media ranged from about 480x320 to 576x310 in pixel terms.
gist.github.com/jonlabelle/7834592
+P the comparable horizontal resolution would be a bit higher, let's say 480x640 (NTSC) or 576x768 (CCIR), but does depend on the video amplifier bandwidth of course.
1080p with freesync enabled
If this was the world's smallest CRT. What is the world's largest CRT.
There were some 40" and 42" CRT TVs...
www.camaro5.com/forums/showthread.php?t=59987
I'm sure I've heard of 46" or even 50" tubes used in a few crazy arcade machines, but I can't find those atm.
Mitsubishi apparently made a few 61" CRTs, but they didn't last long, as they had a high failure rate. (which was probably due to the tubes collapsing under their own weight. lol)
The largest commercially made color CRT I know of was the 40" monster made by Sony. That one was a bear. The weight of the TV was 385Lbs! It took 3 men and a boy to pack it. The problem was 3 men and a boy isn't going to fit through a doorway carrying this monster.
Sony sold them for about a year, and the set was about 7,000.00!
I only had to move one once. After that it was the piano moving guys that transported them, and I refused to work on them.
@@12voltvids I can't imagine how much a 70 inch widescreen CRT tv would weigh if they would have ever built one.
I had a 34" HD tube once. Weighed almost 300 lbs.
I have a 37'' and I thought it was big
Can you show a little battery-powered radio or TV with vacuum tubes in it?
Please feed a video to the composite signal. Would be cool to see that...
Can you stream TV through it? I'd love to see that.
Having seen this, I went and checked my collection of tiny tubes. It appears I also have some of those, and yes, I did have one running. "Why do it?" Because we can!"
The sharp camcorder had a nice clear crt viewfinder and a betamax camcorder had a lovely screen.
the flat cable had 2 wider leads and 2 smaller ones. pretty sure the wider leads are the power
That's really cool but I'd like to see some of the really old flat ones there such a thing as a flat CRT there were used in handheld CRT TVs that were very small and flat I don't know what they were called anymore but it was something that you would see like on a Pip-Boy from Fallout it was really cool I don't know what it's called but I suggest looking for that even though this stuff is really cool
I have a 2" Sony watchman b&w TV with flat tube. Did a repair of it on my channel last year. It us there if you search. I have a 4" flat tube and well. These tubes have the electron gun and yoke below the screen and bend the beam 90" to hit the phosphor on the back side of the tube. You look through a clear glass on the front to see the image on the back side of the tube.
@@12voltvids YES those things are really really interesting pieces of technology and quite impressive they are
I wonder if you could modify it into a scanning electron microscope?
I remember, way back when I was young, I had a sony hi-8 recorder that the mech had crapped out. It had that same viewfinder. Never did get it working outside the camera, but I wanted to.
That CRT is so cute !
Hey, I have an itty bitty video 8 machine, love that CRT. Never knew these little ones looked so good from the inside, the 4" flat (Sony Watchman style) that I have has shrink wrap covering (and most likely keeping in place) the yokes.
I have a viewfinder I got off of a broken commercial grade camera and I *think* it might be a color CRT. The casing on the viewfinder says "Color" and it doesn't look like an LCD. I just have no way to power it to check it out. It would take me awhile to find it, but if you want to check it out, when I find it, I could send it in.
Sure if you sent it to me I am sure I can make it work.
@@12voltvids Finally found it. Its a RCA "Color Electronic Viewfinder" from 1984. Its about 1.25 to 1.5" diagonal
@@mattcintosh2
Yes 1.25^ beam index tube. I have one that works in black and white only because the person that sent it to me took it apart and lost the 2 little color filters that are required to make the color synchronizing circuit work. They were built into the plastic eye cup in front of the mirror pointed at the tube to read the blue and red green stripes to sync the color timing.
I keep seeing old camcorders at the thrift store, now I want to go back and buy them.
Very interesting video! I happen to have one of those, but the image is very blurry, seems like it's not focused. Any idea on where the focus knob would be?
Check your supply voltage.
Just like in my good old Blaupunkt CCR-820 Video8 camcorder (which was a re-badged Sony TR50). Always thought its viewfinder was 'cute', I cried when it died!
Here I thought mirrorless cameras brought about digital viewfinders! Very very cool
Nice Casio digital watch . What's the model ?
Last gasp of the CRT technology. Impressive.
I'm surprised that no one was ever electrocuted in the eye.. holy crap.. imagine if the housing got damaged due to being dropped.
3kV (if that) will travel only a few millimeters (1/8 - 1/10 of an inch) through air and if the housing is dropped there is still the glass of the CRT (if it is broken it won't be used) and the flexible insulation cap on the wire.
robertd1965....the voltage indeed is several thousand, which sounds scary, but the current (the part that kills) is so low that the worst it could do is make you jump, and maybe utter a few choice words. Consider that the static electricity shock you get after shuffling across a carpet on a crisp dry day is hundreds of volts too, yet its bark is far worse than its bite because of the low amperage.
Hey I’d like to get in contact about a vintage camera that I would like to have repaired. It has the 2/3” crt in the viewfinder and it’s cutting in and out and when it’s on it just has a horizontal line. It’s a 1996 model so it’s less IC surface mount and more through hole
Yes gotta give it to the Japanese! Very cool. I was waiting to see if you got a zap! :)
"All the best stuff is made in Japan." - Marty McFly
That's a fake quote from a fake movie... Means nothing in real life...
Can this CRT screen be connected to a raspberry pi, if can, how does it achieve?
That was cool. I didn't realize my old Sony camcorder had a CRT in the viewer. Wow.
You gotta frame that thing in a plexy glass box. Its an engineering marvel!
I have a few of the 1" hanging around. Panasonic also made some as well. Most of the time the focus rings had to be adjusted to clear them up and make them look better.
I put the 1" one to work to watch my camera pointed at the rat trap in the attic. I don't leave it on, but just plug in the power supply that runs the camera and monitor when I want to see if the trap is still there.The little 1/2 will likely go in a clear plastic box just to show off, and of course have a power and video in so it can be shown working.
I am fascinated by that litle tube as well, i once tore down a Sony Hi8 Camcorder which didn´t work anymore..but i kept the cute little viewfinder, brought it to life and still have it :-)
Did those tiny things have the same sort of resolution as a regular sized TV screen would? I'm just wondering how sharp of a tiny picture it could make.
Play some video to see how good it looks! Whats the resolution on this?
He kept saying tube and crt and I couldn't grasp what he meant although i had heard crt moniter before, referring to a computer screen. After he took it apart and I saw the coil it clicked, this is a fucking tiny glass fatback tv, a tube tv, That's just amazing how small it is
Cathode Ray Tube (CRT). So, it is a tube after all and on his level technical people often use the term Tube as it is the same tube as old monitors and TV picture tubes were but this is
miniaturised and more sophisticated...
Wow, when looking into the viewfinder eyepiece on Dad's video camera in the 90's, I was wondering "Is... that really a miniature TV screen? Or some other technology, surely?" Amazed to find out it really was a miniature CRT!
My aunt had one of those full sized VHS backbreakers from the 80's and it also had one of those half inch CRT's, as a kid what gave it away to me that it was a real CRT was the 15.7khz horizontal scanning frequency that can be heard from the viewfinder the moment the thing was turned on.
Hahah geez... and then you have to stick your eye (and brain) right in front of it...
Love this video! Is this crt monochrome or color? (Looks blue & white to me...)
Even smaller than the JVC VF-V45E viewfinder?
i used 2 view finders from old VCR camcorders [yes the big full sized VCR tape] and 2 cheap eBay ,12 v dc, small,car back up cameras with invisible I.R.LED's ,to make some night vision goggles. they worked great. i can't remember the brand ,but the view finder was actually a detachable part that plugged into it. it actually only needed a regular [yellow plug] video feed from the little cameras and 12 volts. it was too simple .worked like a charm. it was in black and white but still vary cool to see in pitch black.
Dave Micolichek
yup. i get bored sometimes and things happen i think the camcorders were Panasonic. hard as hell to walk around because the perception was so different. has a video out plug to go into little eBay pocket digital video recorder /camera/media player thing.
OK you made me dig mine out. I had never tried to get it to work but I got it working. If I power mine at 5VDC it blury. I have to turn the voltage down to 4.75.
Wow. That is cute. I do so love old tech.
Hey, how small would you say a quasar vml 458 camcorders CRT is if youre familiar? i have one and with the eyelet off it seems to be about also a half inch without taking it apart. its super small when exposed without the magnification lens
Same size. Likely a round tube as they were easier to make in this size. I put 2, this one and a round in a single case for display.
How is the video signal sent to the CRT? I have one of those screens, but I don't know how I can visualize something on it, you would help me a lot, thank you.
Just takes a composite video signal . 5v ground and video in.
Nice to see you use the Sony screwdriver to unscrew it.
Dat terminator watch tho... also, SUBBED... now I can live out my childhood electronics dreams vicariously through you! Thanks!
That's an incredible piece of engineering! Out of curiosity, what's the "high" voltage on that thing? Does it work on ordinary composite video - as in, "just wire the yellow RCA"?
Sony's philosophy for making their products is used to be "No.1smallest and lightest of the world". We were sometimes surprised at their products actually.
But those days are gone now.
Amazing! What is the high voltage? Has a filament?
Lets see justhe CRT.
Thank you.
What's neat is that it's not even all that rare either. Just a matter of finding an eyepiece from one of the last VHS-C cameras before they went digital and started using LCD or LED screens.
pauljs75
This one came out of an 8mm, but correct. They are common in the early cameras. Many though used the small round electrostatic deflection tubes that had no magnetic deflection yoke. I will look and see if I can find one of those
They made thousands of them, the thing is most of those cameras have long been recycled.
Is it a Sony made CRT? Was it made for a color CamCoder? I hope you gonna keep it for life and beyond for future generations to view and from the technical point, it is a cute little device to look at...!
There....now someone go out and make the world's smallest gaming console using that.
I could hook my pacman game to it.
Could you have not stripped the lining off the cable/strap at different lengths then solder on the cable itself? By different lengths, I mean like Olympic track race starts.
scavenging old camcorders myself just for these tiny crt tubes, i love playing around with these :3
Yes same here.
Any good project ideas for these tiny tubes? It would be cool to make something with them.
Got a old Sony. I think the sync is bad or something. Flickering. But some years before it worked. Still attached to the camera.
wow i've always wanted a half inch of 144p. Thanks!
so what kind of HV is this putting out?
This is ABSOLUTELY AWESOME!
The 1dp1 might be smaller: 9 pins is all it takes: electrostatic deflection!
Hi,
That's awesomely small. Gotta love CRTs.
Would you mind giving us some part numbers of the camera and/or tube?
Do you have any idea what the phosphor grain size would be? And/or how tightly the beam can be focused?
Thanks
If you look, while he's holding up part of the casing looking for the voltage listing, it actually has the model number printed.
M01KXX90WB
I believe I mentioned it came out of a CCD TRV11 Sony camera.
Should try a hi-voltage probe, maybe a 50 kv probe... I use it all the time back in the day!!!
I saw one of these on a shelf in the Dyson labs . now |I know what it is. great work
Why you are not using 60fps in 2018?
its 50 Hz i think lol
@@ahmettay2382 You can feel diference between 24 or 30 and 50hz. There is night and day difference. But this video is not 50hz, because in video quality options you can clearly see if it is 48, 50 or 60fps.
WHY???? Why not!!!!!!!!! I 100% agree with you LOL!! I am now going to go to goodwill and do this to a few I am sure I will find there. It is so cute. I am already pondering a few projects with this..
I have one of these from a camcorder, how do you drive them with a VGA signal?
Using a VGA to composite video converter, available at ebay, aliexpress, etc.
Now try playing videogames on it! (like Doom?)
Work of Art, agreed.