Oscilloscope From an Old Television
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- Опубликовано: 10 окт 2024
- Join the science discord! / discord Its so easy to turn an old tv into an oscilloscope, I filmed this entire video in a few hours.
Inspiration for this project www.crackedrayt...
Song 1 : "Free instrumental royalty free" Music Produced by Nick Ngo Bangerz / free-instrumental-roya...
Song 2 : "DJ Fresh - Gold Dust (Flux Pavilion Remix)" • DJ Fresh - Gold Dust (...
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. *
"I hate warnings, *continues to give a warning*" --TheBackyardScientist 2015
+TheLMGN Lol, guess I should have said 'disclaimers'. like "do not try this at home" or "I am not responsible for any injury".
+TheBackyardScientist the cat was obviously your most valuable tool.
***** I don't need it anyways- Oh wait, trying to go to the toilet.
thelmgn ikr
hoi
This is monumentally dangerous.
I'm in.
Andrea Di Stefano same infact I'll try this with a nineteen eighties tv
RandomVideos just say 80s like a human please
@@MIW_Renegade I would like to try this with a Orion 1999 TV but that i don't want to ruin, so i might do it on my Sanyo DS13204 TV.
@@bartschellings5272 I was using voice to text back then, otherwise I probably would’ve
Instructions unclear. Cat got stuck inside the TV
Rubén Moreno why do people comment stuff like this?
Because at least two people find it funny
I'm never one to be like OMG UNSAFE, but for people that don't know what they're doing this is absolutely dangerous. Those caps pack enough punch to easily kill someone.
Yes, this! Except for one thing. The cap that holds the charge is actually the CRT itself. So if you remove the CRT without discharging it first you could be in for quite the surprise!
TransientVoltageSpike, I have done removed crt without discharging it before and didn't get shocked
Good point. Just like anything that carries dangers, one should be knowledgeable with it to be able to avoid the dangers. Electricity, explosives and chemicals all have their own specific hazards and one should not endeavor to play with them without an education.
Yea this project is really cool, but if you don't know what you're doing and you don't discharge it you WILL die, but if you discharge it you're all good, you can lick the crt and you'll be fine, but MAKE SURE TO DISCHARGE IT PROPERLY, don't blame me if you injure yourself, you've been warned, honestly the best video on doing that safely is a video the 8 bit guy did on a macintosh, which has a crt in it
There's also a x-ray warning on the tube, if i ever did this to a tv, i swear.
Hey man, I just wanted to thank you for making this video! This is a project I've really wanted to do for a long time but the videos I found online didn't go into enough detail to make me feel I had a firm grasp of what I was doing. And that lack of quality information also made me leery to attempt this because I felt it wouldn't be safe to attempt without better understanding. Thank you for making such an informative video. It really is the best one I've ever seen for this project!
Yeah so I got shocked discharging the dang thing.. Its all good!
careful with that flyback... they use very cheap insulation, with a powerful driver you can arc right thru the rubber/plastic insulation.
Great video! Love the way you complement the actual science with humor!
Thanks chemistry shack :)
+TheBackyardScientist I hope people understood that the flyback transformer was not a joke :)
+TheBackyardScientist think you can try a solar power version of this tv
wow! your videos rock! I could watch them all day!
I am very disappointed that cat wasn't part of the conclusion to this oscilloscope project.
The effect of the difference between the 60 and 61 hertz is called a "beat". Basically once every second (the difference between 60 and 61) the waves become destructively interfered and cancel out. That's why you get that wobble!
Those are some weird looking dogs you got there.
The Doctor Who
"I hate warnings" 2 seconds later... "Warning!"
Once I made this when I was 15 Years old, I added the two channel speaker output to Horizontal Yoke coil and used the sound amplifier amp input as signal input pin and it worked very well .............. I used it to check different things.
Great! I am pumped for new videos!
You can conect the audio ouput, from a power amplifier, to the vertical deflexion coil ; no conecting the vertical ouput to nothing ,eventualy, you can find an impedance to place at that place...o a normal 220v lamp.
Of course you can not change the time base.
Will be always 50c a second.
WAS NOT EXPECTING YOU TO PLAY GOLD DUST. SUBSCRIBED.
What interests me the most is what you said about how you turn the television into a homemade Tesla coil :D
Can't wait until you release that particular video in a few days/weeks, it'll be so awesome ^-^
Oh wait.. that was LAST year.. ;-; Guess you never got around to posting it..
This is really cool! I found a new weekend project thanks!
Have fun! Let me know if you need help.
***** Are the speakers "listening" to the music from the computer and then directing it to the crt tv, or are they amplifying the music from the computer? Are they plugged into the computer, the crt, or both? That's the only part of the project I have trouble understanding. I REALLY WANT TO KNOW THIS!!
Because if i put the cable directly into my laptop, it barely makes waves...
I used a wireless CCTV monochrome 5" monitor which operated a 14 Volts DC, the result was pretty wack, waves are barely visible and requires a very high input, like a 20 watt amplifier at least to get visble movement, posibly the impedance is too high, still was fun to make
Niice.. I actually pick perfectly working old CRT TV's out of the trash, I got like 4 of them so far. I didn't watch TV from like 2005 to 2014 Nov when I got an ematic DTV-analog converter at Walmart for 29.99+ a couple bucks for 2 year warranty, because all these digital to analog converters are made to be killed by on air signals, because the powers that be hate the analog loophole in the Digital Millenium, and I love the analog loophole, so I use these to actually watch VHS and on air TV, but it's nice to know they can be used as oscilloscopes too.
I laughed so hard when he gave the warning text the middle finger
That's really cool!! Definitely will try this :P
I connected the vetical coil lead to the horisontal coil as you said, but that burned the tv. As others said. I crossed my fingers and took a chance, but that fucked it. The coil leads is probably producing different current to the different coils, hence different frequencies (60 Hz horizontal and something like 32 kHz vetical). I guess this works on some tellies and not on others.
this TVscilloscope only showed low frequencies. because you plugged the vertical coil to SUBWOOFER output of your speakers set...
Try to put a non filtered amplified output. You will then see real Sine, Sawtooth or even square lines!
But nice idea btw
No you won't. The coils are essentially inductors, meaning that any high frequencies will be suppressed. No matter what output you hook up to them they will always display filtered sine, square, triangle and sawtooth waves. This is the reason why oscilloscopes use electrostatic deflection over magnetic
Matt is correct, And the reason I used the sub output was because the output would be less cluttered, and stronger.
Realize that the CRT charge is at 20,000 volts, before you disregard any warnings!
Take it from someone who has pissed their pants a few time on high voltage. Don't disregard the warnings!
TransientVoltageSpike wow i am really sorry for you! I don't wanna be an asshole but what was the voltage? It sounds like a super high one.
About 400 volts from a photo flash capacitor. Went across my arms and knocked me to the ground.
All it takes to catch you off guard is 12 volts believe it or not! Now that probably won't make you piss your pants but it will give you a surprise when you are working on your car in the middle of the summer. Normally 12 volts isn't enough for you to feel anything, but you lean over while holding the frame of your car and your sweaty forearm grazes on the positive terminal of you car battery and you get a nice tingle on your arm that feels like someone poking you with a sharp needle.
Accidentally toched the voltage test points on a nixie tube kit - 170 volts.
I WAS PRETTY BLOODY AWAKE AFTER THAT!!! :(
Kaylee Fisher lol
Brilliant man, i am very impressed... one of those things i barely understand, so thinking of it makes you a genius. Subscribed, obligation to make more videos strengthened.
Why You cross a pair of wire? (From board: brown & yellow, with coil: red & green)
This is a great project but I got lost after the warning. 😂😂
im glad i have the cat for the experiment
0:39 - literally the only bit of the video I couldn't understand what you said, and also the most important from a "if you like living" perspective.
What was said? I sort of got "You must dischargid(?) transformer"
Ta :)
I think he said "You must discharge flyback transformer"
Good music choices
0:29 best part
"just completely disregard this warning" *hits it with his car*
I think i like this guy... 😂
DOPE!, really useful project and work right out of the box
Hey you ... I did this with a black and white tv back in 98' . Nice ....
This is amazing, I love you for explaining it!
Ok, I've got the cat. Now what? Actually, I've also got the TV which is a AM/FM/PSB/TV combo about the size of a small bench O-scope(5" dia screen). Going to turn it into a component tester(curve tracer) and then I'll end up with a component tester-radio combo. Think I'll leave the radio intact as it is a very good one especially with AM listening to distant stations.
This is fun but also VERY dangerous to the inexperienced. Trust me I know, I've pissed my pants a few times in the past from playing with old camera flash circuits.
Besides, scopes are cheap nowa days. I got an old TDS540C off ebay for $400 a few days ago. That's a 2GS/s 500mhz digital scope with a lot of features. It was also my dad's favorite scope from back when worked out at Boeing. Plus, if you find a broken scope they can be a fun (challenge) in learning electronics if you want to fix them. If you intend on getting an old scope working again but don't have the experience then find someone who does and is willing to help you fix it. It can be a fun and rewarding exercise.
i wonder if you can make the tv display higher frequencies. you can see when you played the saw tooth and square wave the higher harmonic that make up the wave weren't being displayed that's why they were much smoother than an actual saw or square wave. sick project though will definitely be trying this in the next couple weeks
3:29 OMG PERFECT TRIANGLE WAVE!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Great shot with the evil cat! 1:14
401,
I think the X/Y Or Lissajous mode is essential!
Can you make it able to switch between XY and Linear (Normal) modes?
Thats an awesome proyect
I just found your channel! I'm loving all your videos! You should go a bit more in depth with your explanations though. Great videos! So interesting!
This actually works!! Thanks!
I have a 5 inch battery powered cfl tv, I'm gonna combine my beats pill to it and do this with the screen, that's for the vid it's exactly what I was looking for
i'm gonna try it soon, purrfect!
Boom i have my new show of thingy for the science week, thanks backyard scientist :)
Boom - Crazyrussianhacker 2016
+danijel124 And 2015... And the rest of Taras's life
3:38 when are you gonna make these vids?
This is amazing I love watching you plus the cats
HAHAHA the flux pavillion gold dust remix so classic
please note that some old tvs won't be able to do this. I have already destroyed a few tvs trying this. the reason being that the horiz. and vert. coils have different resistances and the vertical driver could not handle the resistance from the horizontal coil, this caused the tv to overload and fail. I have gotten this to work, but It was with a Philco tv from 2000. I do hate the manufacturer warnings.
connect the input to a rochelle's salt microphone, dunk it underwater snd send a signal to the water, you will be able to see a section of the bottom of the sea!~
Would it work if I played my guitar through this?
why dont you try it out urself?
yes
only if it is an acoustic guitar because that one doesn't need electricity to run and then you can power the telli
well if i plug in my electric guitar the lights go out and i have to get a new fuse box because the old one burned up
A bit of an old reply I know, but nonetheless a great idea!
You should be able to do so, you just might need to plug your guitar into a preamp first :) you can use your guitar amp, if it has a effects return loop, or you can use a traditional audio interface.
what's the use of the cat?
Orange Fox for looks
Yes.
Orange Fox The static electricity of the cats fur will intesify the effect of an oscilloscope.
Nobody discharging the flyback transformer
toxoplasmosis
simple?, i understood everything up to,removing the screws from the back of the TV
Do i wanna knooow, if this feeling flows both ways?
I need someone to play “Do I Wanna Know” through an oscilloscope
Fascinating !
Did this with a minitel... worked, now i have an oscilloscope on hand :)
Vraiment chouette votre vidéo Merci
This is amazing!!
At 0:30 I snorted and laughed harder than I have in a while... xD
Hey! Tried that myself and now I'm wondering... why isn't the wave occupying all the screen? It happens also in my TV so I would like to make the wave occupy the entire screen. If you or anyone could help I would me much appreciated! Also, great video!
You need more power! Use an audio amplifier between the signal and CRT.
Warns you about discharging the fly back after he says he hates warnings😂and the middle finger to the warning sign lol
I have a giant old crt tv laying around in my basement. This will be fun
thats really awesome
how'd u manage the power from transformer to the audio jack when u soldered it to the deflection coils ?????? isn't the speaker gonna blow up?????
We once opened one of these tv's at school but the teachers said it wasn't safe because it would implde or something
the glas envelope is at high vacuum
Open then discharge the tube
Aww 7 months later and no more TV experiments! :(
I subscribed! Thanks
straight from greatscoth!!
Make circuit of oscilloscope that run on video input composite of TV with out open any tv or any other device.
it make on working tv or video input based devices or monitor but not used A2D based circuit like Arduino or other digital circuit
Useing analoge circuit this is awesome new idea to make every video based devices into oscilloscope.
Can make tow different frequencies horizontal and vertical,and then distrube by injecting measuring signal work oscilloscope.
Naise sooper am happy to watching this video
huh, a lot can change in one year
Like gold dust
Awesome.
brilliant
I have a old magnavox with .digital remote control. but I never seen this but I like it :-D
You look like Lenny Zakatek! The singer from The Alan Parsons Project! The ProgRock band!
Disregard the warnings?
"Don't worry, I know what I'm doing" - Famous last words
Good video love it
Anytime I hear 'flyback transformer', a mental image of a man getting shot across the room by electric shock appears in my head. No warning necessary.
its like gold duuuuuuuuuuuuuuuuust
Is it possible to make an X/Y mode by tying vertical and horizontal deflection to 2 different channels?
Yes, in fact it might be better to build your own horizontal time base so that you can have a triggered sweep.
yes i wondered this too.
i built one, it works good. time for some jerobeam
coffeehauz thats how that dude made osilacsope music
i would like to see woofer cooker played on this
3:04 You call that a square wave? Were do you get your Electronics's Ed from, - - Bizarro World? 😉
Sick!!
I’m still confused as to what is supposed to go to what at 1:19 . Also does the polarity matter, or is it still AC? Thx
I MUST do it some time
thank you but i would have loved to see the reasons and explanations that go with this
I modified a old Sanyo TV to ACT as one, but it didn't work, all i saw was red,blue,brown,black What wires?
Very cool
GreatScott! just did a video on this
You have the Blue Yeti! I happen to have a RUclips channel myself, on a different Account and have a Blue Snowball!
0:31 oh crap he actually did the middle finger
Kids in Africa could have eaten this TV
Kids in Africa have newer jokes than you...
Alex Murdie May be so XD
***** Then other african Kids can eat those dead kids.
Theo T. The tv is not broke it is repurposed
Theo T. he put it to use
Amazing! Sadly I don't have an old TV.
realize that CRTs emit x-rays before throwing away the outer shielding covered in warnings...
What does he mean by connect the horizontal coil wires to the vertical coil leads? Is that where the horizontal coil wires connect to the circuit? And I just have a dot on my screen, I’m not sure how to see which coil is and isn’t vert.