Enjoy this video regarding the inner workings of a vidicon camera tube! Any ideas for cool projects to make with this tube? Links: play.google.com/store/apps/de... www.comeuntochrist.org/reques...
I was watching a documentary on the Voyager 1 probe and couldn't understand very well how the cameras of the ISS worked, but now I get it! Thanks for the great video.
We are so glad you made it home safely and are making new videos. Thank you so much from all of us here in Texas that were lucky enough to have met you and learned from you! You're such an amazing young man and we can't wait to see what the future has in store for you. Or should I say what you have in store for the future! :)
Just came across this presentation. Congrats! Very well done and presented. Almost perfectly explained and not really worth pointing out a couple of very minor missteps. For further study (offline, no need to post a follow up) the Vidicon was one of several vacuum tube imager technologies that reigned in the later half of the twentieth century. The principle used in the Vidicon (and later Plumbicon, Newvicon, and SATicon derivatives) to convert light to an electrical signal is called "photo conduction", the prior video pick up tubes (Iconoscope, Image Orthicon, Image Dissector) relied on the principle of "photo emission". Interestingly, the modern solid state imager chips (ICs called CCDs) use a different principle that captures light photons that arrive as the optical image, these become photoelectrons (in turn readily used by electronics the generate the required electrical output signal)
This vidicon explanation was really first-class 👌👌 Better than any other source I found. Also great to see the Panasonic cctv unit. I think I used either that or similar in learning for the first time how the NTSC signal works - already a real eye-opening moment.
And that was in 6.111 - a course which I don’t doubt you’ll end up taking, even though you could probably TA it before even starting it 🙂. I’m glad you’re at MIT, you absolutely belong there 🙂 Anyway, thank you for the vidicon explanation. 20 years on and I hadn’t learned how it works till I got curious yesterday and found your video. .It’s a masterpiece of technology, snd it floors me to think about how people developed its production precursors in the 1920s and 30s.
Thanks for showing how a crt works. Please make one for the newer chips. Love watching every sec of your videos. You have all the goodness and greatness of this world. Still learning.
I've always known about these since my electronics schooling in the 70s but for some reason I woke up this morning wanting to know the details of how they work. I think the Lord led me here. Thanks brother and don't let those heathens at MIT turn you against Christ like the majority of public universities in the USA are doing with their students.
I just heard about these tube cameras in a Techmoan video and I had to learn more about them. Thank you for making this video, it was the exact amount of detail about the subject I wanted to hear about in an easy to digest format.
The first thermal imaging cameras used the pyro electric vidicon tube , they needed a germanium lens and a chopper wheel between the lens and photo cathode because to produce a useable image ether the camera had to be moving or something in the image had to be moving , the chopper wheel produced that change if the camera was still or the image was still but it work exactly the same way, excellent explanation presented in an easy to understand way and very informative
Thanks! I would not want to be a TV cameraman looking at a crt all day. I found some lenses from a projection TV once and they had a warning: "Xray critical part". Must have been lead lined or something.
I grew up mormon but left the church around 10 years old after being baptized. I always wondered what makes my faith in my religion anymore right or wrong from another child who was raised to have faith in another religion (believing in whichever God they were taught was god). Im beginning to believe it doesn't matter. The most important part of any religion is to build morals, ethics, and a strong character. I feel like I have pretty much destroyed my life and wish I would have continued my faith, whatever faith that may have been. I admire your commitment and know it will have enriched your life far beyond what you may know. Much respect and love.
Dude, I found this object in a junk container, you know screws, bolts, paper clips etc. Just a bunch of miscellaneous stuff. And put in my phone these numbers and saw the very same object and wondered where did it come from? What was it? So I looked on RU-vid and your video was there. Thank you for answering the question that was on my mind, now where did it come from? I remember buying several old VHS camcorders trying to make a night vision tool, and this was something I thought was neat looking and saved it... Once again thank you for your most excellent video, drawings, and explanation.
Great video... would have been cool if you could show the actual waveform of the black square on the ocilloscope, but very cool to see the old analog tech!
Good explanation. There’s also an interlace on the scan lines that you might want to investigate. Present day TVs are sequential and much higher frame rate.
Welcome back, Tanner! I've been expecting you to reappear :). I'm glad that you enjoyed your mission and hope that your experience at MIT is awesome whenever it does begin.
There are all kinds of tube based image sensors! Image orthicon tubes used a metal grid for the image sensor. It would produce some really beautiful dark halos around any part of the image that was too bright.
NTSC is 15.75kHz, not 15.34kHz. Also, you could have explained how color vidicon tubes work - there were basically two ways to get color. The first way was of course using 3 vidicon tubes with a color filter in front of each of them - but this was of course 3x more expensive than a regular B/W tube, so it was only used in broadcast cameras. But there was a way of getting a full color signal using just one tube, but it was very tricky and used a lot of hard math. You should try playing around with the tube's lag - you can create some awesome light effects and create comet tails. Be careful not to aim it at the sun though, you can damage the tube if you do that.
Nice Explain, clearly shows how cathode rays read the image by the polarity difference impressed on the chemical layers. Thanks! - .. Maybe you like the Trail Effect that the Vid and Plumbicom cameras like RCA TK 45/46 produced when overlaps and passes through a light spot in the scenario of those Auditorium Talk Shows or Band presentation on late the 70's and 80's
Glad you are back Tanner, I have learnt a lot from you, please keep bringing us lots of interesting and wonderful thing to do and talk about in the world of electronics, I'm glad you are still going to MIT hope you have a good time and learn lots, Thanks
Thank you for that explanation! That made it very clear and I always wondered how an electron gun that fires electrons can pick up an image. Funny that it uses tin oxide... it almost acts like a resetting tin-type photo from the Victorian Era.
I'm so lost. Can someone help me out here? If the lens takes the image and projects it on the sensor, why does the electron gun have to take it and redraw it on the back side of the sensor? I'm so confused. Is the image from the lens focusing it at one point in the center and is redrawn in a raster pattern on the back side of the sensor?
Wait. Let me get this straight. Are you telling me these tubes THEORETICALLY could have 4 to 8k resolution? All you would have to do is DRIVE the Electron beam to scan more along the front element? WHOA!!!!!! Maybe this is how Japan had the First HD broadcasts WAY back in the 90s?
Welcome back Tanner ! I'm glad to see you again, and that you kept your scientific mind. Very interesting video, they were very ingenious at this time already, and I always wondered how a camera works. Thanks.
@@TannerTech I think you can make 2 kinds of videos: 1) For beginners - just like some of your videos from the past 2) More advanced videos for people who don't need all the details. I think you are very bright young man and you have a great potential! Just make sure you give yourself time just for you, so you can stay happy! I like to salvage parts from microwaves and coffee makers... and use the parts for some projects. I love to build me and organised parts in boxes, so I know what I have. Sometimes I discover expensive parts, that would cost over $50 - it was a pair of special diodes. I reuse even the extension cords or just yesterday, I've took apart a men's shavers - see our Monday night meetings we have, while this virus .... facebook.com/watch/live/?v=303356614022297 I'm Tony on the video. It has a simple shaft that make rotational movement into side-to-side movement! The batteries aren't new, but I was able to charge them and test the motors. I also have my website: tonysfun.com/ and you can see my videos on my youtube.com: ru-vid.com/show-UCW1O2JT87eN5_Bb5EHbencw
Wow, I just found a bunch on ebay for like 60 bux. I have always wanted this effect in a camera with the comet-tails (trailing lights). Time to get to work! >_
Did Jesus uses LInux? And would he really need a compiler? Do you think he could write in raw machine code and bypass the high level language, compiler, and link stage?
No shutter, I think exposure is controlled by either the bias voltage on the detector surface or the gain of the amplifier that the detector signal feeds into.
Thanks for the amazing video. I want to shoot a short film with the same aesthetics and look. How can I achieve that? Can anyone please help! I don’t want to shoot with a 4K camera and put filters to make it look like it was shot in the 80s. I want to do it authentically like the guys did it back in the 1980s - 1990s. Which camera should I use? Most film festivals would ask for a HD print. How do I tackle that? Can you please help? Is it even possible?
Could you use a VidCon tube in a tube amplifier circuit to amplify sound would it works that way also I have a vacuum tube and I don't quite understand how to make a tube amplifier with the shoe there's a video on RU-vid about this particular tube which is a 38HE7 and I've made of single Cube vacuum tube amp but they don't they don't explain how they did it could you possibly do a video on bed or answer me back in help me out thank you
Technically I probably could do that. The vidicon tube is not designed to be used as an amplifier, but using the 2nd grid as a plate would probably make a weak audio preamp.
Congratulations Elder Tanner on completing a successful and meaningful mission! I wish you all the best on your next life journey at MIT. I'm looking forward to seeing what you accomplish. I have a new old stock GE vidicon tube the I picked up at Surplus Shed some years ago. I was thinking that maybe I'd experiment with it and get it to produce an image. But I see after watching your video that there's much more to it than I'm likely ever to achieve. I guess I'll just keep the tube and enjoy it as part of my collection of vintage electronic parts.
5:14 When you say the layer of glass (faceplate) is there to protect the vacuum, does that mean there is no way to replace the faceplate with a different material like fluorite or quartz for recovering non-visible electromagnetic radiation without damaging the integrity of the vacuum tube itself?
@@TannerTech No idea if it works yet, I've only got the camera itself which is a HVM 100CE by Sony. It worked with old Betamax VCRs but those are not exactly cheap and the pandemic alone has given me reason to be prudent with how I look at the money, I am trusted to have stewardship and the last thing I need is more electronics lol ! Although the simplest solution though would be to buy one of those, like the C5 or C7, there was also a camera effects module that the camera could be used with, and a certain adapter cable made at some point in time, that would convert the 14 pin Sony CCK (camera connector cable type K) to an A/V signal and separate DC power line, presumably for plugging into any old TV, but they are out of stock everywhere I have looked. All in all its fun to learn about but might be better off applying black and white filter in post production rather than going for the authentic look hehe, crt camera flares with their streaking are hard to reproduce though! It's fun to learn about but at some point I must ask myself if it wouldnt be better just to take the shortcut, pray for the ego of a perfectionist to be reduced! More importantly pray for my pride in general to be taken away. This I ask of you! And do I really need a working 1970s vidicon tube camera for "historical films" anyways lol, I'm thinking just adapting vintage lenses gives a good enough change in the feel or tone of an image? Plus the other 99 percent of a story's immersion, the stuff non-techhy people care about and notice,is the narrative, dialogue, costumes and sets, having the b&w video camera is almost ridiculous at that point even if it's just for a joke scene heh, If ive still done nothing with it and if I still have it, I might give up and just ask if I can send it to you, maybe you can make a video with it? XD Have a blessed Monday and thanks for your time! Stay safe and peace be with you in the name of our Lord Jesus Christ!!
Nice plug for the Book of Mormon! Glad you liked the Iron Rod. Just watch out for the keyboard warrior Korihors misleading the comment sections. I heard that even some of the state side missionaries are getting released earlier. It's tough being away from your lab for two years. Glad you're back. You motivate me to upload more content. Have a great Sunday and stay safe from the 'rona.
God is unable to control the wills of mere humans without stripping their actions of moral value. This is strange, since God being all-good should mean that anything God does is morally good. If God forces a human to make a particular choice, shouldn’t that choice be a morally good choice? Or is it possible for God to take morally neutral actions? Of course, if we say that God is all good and therefore cannot do anything but act morally, then we are taking power away from God - the power to perform morally bad actions. Hmm!
As is the case with all human beings, even atheists like myself, some sense of spirituality is hardwired into our brains. Is there nothing that you find awe-inspiring? Does everything have to be so rigidly rational with you Mr. Spock? What is it about your desperately empty life that has made you become such a dried out lifeless drudge? Tanner is a good kid. He's found meaning in his life. That is a good thing. He is deserving of our encouragement. He has the potential to achieve wonderful things that benefit us all. What have you done with your life?
You can answer this simply by stating that human beings don't have the capacity to judge (perfectly) neither God's nor our neighbor's actions. Well understood and practiced Catholicism (which is rare) relies on becoming a humble servant of God (and the neighbor) and leaving the judgments according to The Law to God.
@@erikburman530Very clever, a philosophical statement replied to by a personal attack on the author! Think the general gist of your statement was that if anyone does not agree with the existence of some particular flavor of God then they can only be a vacuous non passionate human being with no apparent direction to their lives. This is most likely untrue. e.g. Prof Steve Hawkings said, in as many words "make the most of your life on earth because after death there is nothing"; guess he had one or two notable achievements! He never was uncaring, vacuous or found lacking in his passion for people, science and humanity.
@@isoguy. I'm not certain what Dr. Hawkings said. HIs utterances were generally incomprehensible. Only his grad students perportedly could understand him. Seems a little sketchy to me.
please done throw that away! you can see why those old tv camera men all got brain tumors when youre staring down something putting out xrays all day long (look into how the xray tubes work!)
I seriously doubt that the vidicon tube is capable of producing anything even approaching hard x-ray photon energy. Much less likely is the notion that it could produce ionizing radiation capable of penetrating the human skull and damaging cellular DNA. Videographers would have been looking into a CRT screen to see the image produced by the vidicon tube. The electron beam from the vidicon tube would have been directed in the opposite direction from the vidiographer so that doesn't even enter into the your claim that the tubes might have caused brain cancer. The CRT screen would have produced very low election volt energy so no worries there. It's really annoying when people like you assert nonsense like this on social media without offering a shred of supportive evidence. It's even more annoying that people accept such malarky without question. But hey, I'll keep an open mind. Do you have any credible evidence to back up your assertion? Or are you just pulling this all out of your rear end? Please educate me (but keep your rear end out of it).
@@erikburman530 by the way, people back then really did get a lot of cancers of the eye or skull that worked on the early cameras, look it up, i can make you an xray tube the size of your little toe, its still going to produce xrays and you still wouldnt want to be subjected to it for long periods of time, I suggest you do your homework, you might want to start with something basic, like oh say, how an xray tube works, how it is constituted, voltages required, emission factors, any paper based on the affects of xray sources from the last 60 years... I dont say things without anything behind it, unlike you,I have done my homework, I have tested these things, in laboratory conditions, so please, think again before trying to attack someone on a public forum
@@phonotical You say your have done your homework but you fail to provide any legitimate evidence to back up your assertion. Feel free to provide citations. I'll be here.
Don't ruin an otherwise somewhat informative video about retro gear with religious bullshit. I stopped your video at 1:11 because that shit isn't necessary.
