That was interesting. I recently upgraded from a 20" CRT from 1998 to an LCD monitor (15") from 2005. Yeah I know its 2010 and that that's still obsolete. Any idea on fun you can have with a CRT deflection yoke. And by-the-way, CRT Flyback shock hurts. Its only 15K + volts. What could possibly go wrong?
@Videoman2550 this little 3/4" crt uses much less than 15kv to power it. I've never been bit by high voltage from a flyback, I watched my brother do that when we were teenagers, that was enough for me
@jforb427 Ha! You are wise. Thanks for responding. I actually took apart a 5" television from the mid 80s and used the existing CRT FBT circuit to make I think about 1KV power supply. I was going to build a Tesla Coil with it but was content by the 2½ cm arc it produced. How easily entertained I am! LOL
@fujifilmtest Well as far as over all picture quality and better, more efficient technology. I agree that 20" over 15" is better. But LCDs do have better display quality and are much more energy efficient. That's what I meant by upgrade.
Amazing and awsome. Thank you for the demonstration. I never realized that picture tubes were that small in size. You can almost say; being that its a round tube, that its a super micro roundy TV :). That would actually be so neat to have as a vintage collectors item. Cabinets would have to be custom made after the full circuit is built but what an idea for vintage collectors :).
I have plenty of these small projector viewfinders and have made things from "night vision" scopes to oscilloscopes from them. Still useful even today.
The model-m's are fantastic, I'm still using mine from the first family PC (on my modern machine). Still works flawlessly.
That's a nice little demo of what one of these tiny CRTs can do. Have one rattling around in the parts box here somewhere...really should do something with it!
PS: Is that an IBM Model M I hear clattering away there?
@ladanut275 & @jforb427: Model M FTW!!!! I had a 101-key Model M with an old IBM XT I had (my first PC I ever owned) back around '93--one of the best KBs I've ever used...
Id like tio see something like this done on a small B&W LCD dot matrix panel like from a graphing calculator or a gameboy and have it display video from a computer or composite video like from a video game console. I think I have the guts of the screen but I need a way to pump video into it.
I did the exact same thing with both a 1/2 inch and a 1-1/2 inch monochrome viewfinder CRTs. I was trying to build a DIY head-up display, using a half-silvered mirror so I could see through the display. Unfortunately, the resolution was very poor on these displays, barely usable at 640x480. Would love to find a 1024x768 LCD the size of a stamp to build a wearable HUD. Guess I will just have to wait until those cell phone displays come with a VGA input.
What power source does this take? Also, How many pins is the connector? I have one myself, but only the viewfinder, and I don't know which pins do what, its only got 4. It's from an RCA camcorder.
these viewfinders are almost always +12volts (yellow or red) +ground wire(black)+video in wire-usually shielded=3 wires for hook-up. other wires are for the record indicator light, etc.
I found the data sheet for the integrated circuit, and found which pin corresponds to video input, and traced the circuit to find the wire that connects there. Some of these viewfinders use ICs that don't have published data sheets, which means you'll probably have to use an oscilloscope to find the input, while the viewfinder is connected to the rest of the camera, and powered on.
can u do 1080p
bostonbadass101 5 months ago
Now BSOD this, Microsoft.
thebby1205 5 months ago
what would this crt be used for?
ultimatebman 11 months ago
time for windows 7 and linux! :P
nzoomed 11 months ago
what resolution is this at? i can only go down to 640x480 on xp. it works, but with an error message.
fujifilmtest 1 year ago
highest dpi ever!
jjovereats 1 year ago
That was interesting. I recently upgraded from a 20" CRT from 1998 to an LCD monitor (15") from 2005. Yeah I know its 2010 and that that's still obsolete. Any idea on fun you can have with a CRT deflection yoke. And by-the-way, CRT Flyback shock hurts. Its only 15K + volts. What could possibly go wrong?
Videoman2550 1 year ago
@Videoman2550 this little 3/4" crt uses much less than 15kv to power it. I've never been bit by high voltage from a flyback, I watched my brother do that when we were teenagers, that was enough for me
jforb427 1 year ago
@jforb427 Ha! You are wise. Thanks for responding. I actually took apart a 5" television from the mid 80s and used the existing CRT FBT circuit to make I think about 1KV power supply. I was going to build a Tesla Coil with it but was content by the 2½ cm arc it produced. How easily entertained I am! LOL
Videoman2550 1 year ago
@jforb427 I did that when working on a playstation 2. Its not fun.
ultimatebman 11 months ago
@Videoman2550 you mean downgrade. 20" CRT is better than 15" LCD.
fujifilmtest 1 year ago
@fujifilmtest Well as far as over all picture quality and better, more efficient technology. I agree that 20" over 15" is better. But LCDs do have better display quality and are much more energy efficient. That's what I meant by upgrade.
Videoman2550 1 year ago
If you use the Old CRT monitors with Windows installed, Windows will bbe go monochrome!
tweetyaja 1 year ago
Darn, it'll be hard to look at your screen during an FPS game. D:
sodacan187 1 year ago
maybe i could actually play crysis on that....LOL
shankman2000 1 year ago
hahah awesome :D
nikkolei 1 year ago
Thats awesome!
jdcrispe95 1 year ago
Come to think of it, people in the crt era seem to have all they need for some of today's tricks.
AirBa 1 year ago
Comment removed
quaxk 1 year ago
Amazing and awsome. Thank you for the demonstration. I never realized that picture tubes were that small in size. You can almost say; being that its a round tube, that its a super micro roundy TV :). That would actually be so neat to have as a vintage collectors item. Cabinets would have to be custom made after the full circuit is built but what an idea for vintage collectors :).
musicman0150 1 year ago
I have plenty of these small projector viewfinders and have made things from "night vision" scopes to oscilloscopes from them. Still useful even today.
The model-m's are fantastic, I'm still using mine from the first family PC (on my modern machine). Still works flawlessly.
classicnz 2 years ago
That's a nice little demo of what one of these tiny CRTs can do. Have one rattling around in the parts box here somewhere...really should do something with it!
PS: Is that an IBM Model M I hear clattering away there?
ladanut275 2 years ago 6
Of course it is, best keyboard ever
jforb427 2 years ago 4
@ladanut275 & @jforb427: Model M FTW!!!! I had a 101-key Model M with an old IBM XT I had (my first PC I ever owned) back around '93--one of the best KBs I've ever used...
pvx 1 year ago
Id like tio see something like this done on a small B&W LCD dot matrix panel like from a graphing calculator or a gameboy and have it display video from a computer or composite video like from a video game console. I think I have the guts of the screen but I need a way to pump video into it.
coondogtheman1234 2 years ago
I did the exact same thing with both a 1/2 inch and a 1-1/2 inch monochrome viewfinder CRTs. I was trying to build a DIY head-up display, using a half-silvered mirror so I could see through the display. Unfortunately, the resolution was very poor on these displays, barely usable at 640x480. Would love to find a 1024x768 LCD the size of a stamp to build a wearable HUD. Guess I will just have to wait until those cell phone displays come with a VGA input.
emineid 2 years ago 2
I"d like to try the myvu crystal, it's 640x480, but they go for $150+ on epay still
jforb427 2 years ago
I used to have one of these tubes. It is now gone. It just randomly disappeared, which sucks.
VaderNES 2 years ago
what res?
chucknorris687 2 years ago
64x48 :D
mihou2 2 years ago 7
sounds about right! not much resolution on that thing
jforb427 2 years ago
640x480 interlaced :-)
ThisIs2009 2 years ago
@mihou2 640x480
wiz2111 1 year ago
What power source does this take? Also, How many pins is the connector? I have one myself, but only the viewfinder, and I don't know which pins do what, its only got 4. It's from an RCA camcorder.
adcurtin 3 years ago 2
mine hase 6 whiers. but i only neaded 3. 2 for power one for rca video imput that is grounded
RockeyDA 3 years ago
these viewfinders are almost always +12volts (yellow or red) +ground wire(black)+video in wire-usually shielded=3 wires for hook-up. other wires are for the record indicator light, etc.
VideyoJunkei 3 years ago
the one i did was 5v. I still have one that I can't figure out though, I will try 5, then 12 with the colors you specified.
adcurtin 3 years ago
How did you find the video input on it?
I can't find the input on mine?!
//jojje302
jojje302 3 years ago
I found the data sheet for the integrated circuit, and found which pin corresponds to video input, and traced the circuit to find the wire that connects there. Some of these viewfinders use ICs that don't have published data sheets, which means you'll probably have to use an oscilloscope to find the input, while the viewfinder is connected to the rest of the camera, and powered on.
jforb427 3 years ago
It is a high voltage CRT, the circuit board has a flyback transformer on it.
jforb427 3 years ago
I got a camra with a crt viewfinder and I want to know how you riged yours up as a monitor.
RockeyDA 3 years ago
VERY nice! :D 5 stars
malmvaegen 3 years ago