By the way, you can calibrate this to use to measure peak voltages and such, I'll make a video soon showing how

@chrismuntean

7 жыл бұрын

I did it and it worked!!! it's really cool and was you addjust the fly back trasfomer(when it's unplugged,thanks for the tip) you can make it be a thick rainbow line.

@mazmusicornament525

7 жыл бұрын

if you can make a vr headset, no need for audio. just plug hdmi into pc, no android required, ill pay you for it. gotta be under whats in the market of course. and try mimic the lighthouse tracking that htc vive has. Its way better than IR positional tracking, a little anyway.

@zebevans5349

7 жыл бұрын

Keystone Science, I made one this evening, but it keeps popping capacitors and mosfet transistors... any remedy for that?

@oleolsen9484

7 жыл бұрын

Keystone Science

@KeystoneScience

7 жыл бұрын

+zeb evans wait, the oscilloscope is popping mosfets and capacitors?

I learned to be careful taking apart tvs like that the hard and painful way

@jamesspangler6625

7 жыл бұрын

i was attempting what he did, ended up getting shocked twice. Apparently the hole where the suction cup was plugged in held a charge too so when i went to wipe the dust off the back of the tube i got a good jolt. then i tried making an arc like he did when he unplugged the suction cup in the previous video and it ended up jumping from the ground wire i had to my hand instead. even more involuntary arm dancing

Your channel is gold

Wait. What was that reflection in the thumbnail?

@Crus0e

3 жыл бұрын

I saw boobs in the thumbnail, it was just legs

Shango066 has a video where he ends up going through the "supporting levels" of vintage CRT's. Excellent video! If I recall correctly, horizontal drive is what drives the high voltage.

Hi, I just completed this project, and it worked like a charm- I loved it... until it tried to kill me... (Not really). I was playing normal songs and using a frequency generator when the tv suddenly screached at me- it sounded like the flyback transformer. It was a sudden, very loud, continuous high-pitch sound. I unplugged it immediately. Any idea what happened? Is it dead? Thanks!

@ishigamiyu1991

3 жыл бұрын

did you try turning it off and back on?

@ishigamiyu1991

3 жыл бұрын

I mean it's a tv after all so

@ishigamiyu1991

3 жыл бұрын

are you alive still or did the tv kill you

@StaticFPV

2 жыл бұрын

Am also curious if you are still coherent

@nogatco1

Жыл бұрын

@@StaticFPV hahahahahahah

I love CRTs and I collect them so quite obviously when I acquired a monochrome PVM that had no other use I had to try it and now I have an oscilloscope in my hi-fi

Interesting but that music too way too loud and distracting.

@jimthesoundman8641

3 жыл бұрын

He probably can't tell how loud his music is, since he destroyed his oscilloscope. Maybe he's destroyed all his test equipment in a similar fashion.

Dude it's so dope!

It just wants to exist! Awesome video

Your videos are great im subbed!!!

Always resourceful and enjoyable video contents, yay! Thank you very much Nate:) i really love what you're doing** i love physics, too. Thanks to you😊 you are so inspirational! Did you self thaught yourself? You're crazy talented^^ i already give a thumbs up plus subscribed. Love ya♡ (btw, i have one question: what does flyback transformer exactly do? Is it a high voltage converter thingy?)

@KeystoneScience

6 жыл бұрын

awe, thanks

@KeystoneScience

6 жыл бұрын

However, if you mean to say what does it do within the TV, it applies a high voltage field across a near vacuum of the CRT, and so this way, the electrons with a negative change are driven towards the positive side of the TV, the electric field causes the electrons to accelerate to a very high velocity, so that when it collides with the phosphorescent screen, it will be enough to create photons of visible light converted from the energy of the electron :)

Hey man! I’ve been searching around on the best ways to do this, I think my tv is one like yours, any other ideas to remedy the “protection mode” it goes into since the video was made? I don’t have another tv to sacrifice 😓 Currently I have it set so there’s both wires from my stereo speaker outputs, hooked up to both the horizontal and vertical coils in the tv Whilst leaving the flyback to charge the tube of course, if you have a chance I’m going to post exactly what I have currently on my channel for reference, but I really like it how you had it going! Truly what I was aiming for initially. Was the audio from your stereo just coming from one speaker positive and negative?

thanks for the video i enjoyed it!!!

You are aware shattering the CRT like that releases a lot of toxic compounds, yes? Otherwise, good video.

@KeystoneScience

7 жыл бұрын

Yeah, the main toxic part is the ceramic part of the electron gun, and I was sure not to break that :D and thanks!

I'm using the exact same tv what a coincidence and convenience..

@KeystoneScience

7 жыл бұрын

+Anthony Vega hahaha xD good to hear!

@anthonythomasatv

7 жыл бұрын

Keystone Science I'd love to see something like how to make powerful electromagnets

Would it be able to draw awesome forms by using different tones?

"A special tv" Aka a little mother...

I think I heard the TV mutter, "Just a flesh wound".

can this be used in a radio troubleshooting lab for RF? i need an oscilloscope but they are way to expensive

Pretty cool bud.

that was fun.

It won't have any residual charge like that right? I am doing this for another project and I am not connecting it to power

Brilliant.

great brother

How much watt has the audio amplifier? I have a little 3 watt amp, but it's not working.

If you don't wanna have it laying on it's side and you'd rather just use the 60hz, you can just plug the vertical deflection out from the board into the horizontal coil. Also, I agree that the "safer" TVs suck for any electronics projects.

Love that pizza box!

Hi! Did this with a tv, after some time, the beam in the center of the screen created a small dark spot that stayed after turning the device off. Can it be dangerous to continue using it? I'm thinking it might have removed the safety layer inside and I'm afraid of the x-rays.

@jdriver2308

2 жыл бұрын

its just screen burn. its nothing really.

What is the maximum voltage I can test using this?

Warum machst du das Gerät kaputt?

4:28 im having the same issue with a tv of mine. I will adjust the flyback knob DOWN to get rid of the retrace lines

Thanks for this video! Do you know if this would work with a CRT monitor? Or do I need to use a CRT TV? Thanks!

@KeystoneScience

7 жыл бұрын

+Josh Alpaca hi! A CRT monitor should work fine for this aswell, as long has it has the horizontal coil, and the vertical coil then it should be ok!

@joshfriedchicken8954

7 жыл бұрын

Thank you so much!!! By the way, I love your channel!

@NerdlabsSci

3 жыл бұрын

@@KeystoneScience Mine isn't working. the line is about an inch long and it is just getting longer and shorter along with the music. Reminds me of a vu meter. how do i fix this? can u reply soon?!!!!!!

so basically you just wire a stereo to a decoder using vertical or horizontal lines to generate the image? seems simple enough.

The reason that the TV didn't start up with the same amount of resistance in resistors as the resistance of the coil, is because of the inductance of the coil. The coil will limit current by using power to drive the magnetic field associated with it. Resistors won't do that, so you'd have to use something of equal inductance.

@burtonboarder707

5 жыл бұрын

Hi David, I seem to be running into this problem trying to build an oscilloscope of my own, what could you use in this case that isn't a resistor? Thanks!

@retropcs88

4 жыл бұрын

Connect the horizontal coil to the vertical output, And connect the audio to the vertical coil. Boom don't even need to turn it around.

My TV is a Sanyo DS13204 So do i only need the brown and black??? _Impressive also..._

Could you still use it to watch TV and can you study electrical frequency

@ethand4784

2 жыл бұрын

You would have to hook the wires back up the way they were originally, of course if you break the tv you absolutely cannot

Thank you Keystone science I was building oscilloscope from TV to but it didn't work there's even video in my Channel but after watching your video I made it so it works. if there wouldn't be you I don't know what would I do So yeah thank you dude you are the best.

Hello, Keystone Science. I built one of these oscilloscopes this afternoon; easiest electrical build I've ever done thanks to your video. But if I had an input signal and wanted to determine its frequency, how would I go about changing the speed at which the electron beam zips back and forth across the screen, like a "real" oscilloscope? Could you cover that in a future video maybe?

@eljaygaming6292

7 ай бұрын

the speed of the horizontal sweep is usually controlled with a sawtooth wave generator. i imagine the answer youre looking for is related to computing a value from there.

Why not make it horizontal?

@KeystoneScience

5 жыл бұрын

The scanning of the tv makes it very hard to make it horizontal, it is much easier this way

@retropcs88

4 жыл бұрын

You just connect the Horizontal coil to the Vertical output on the circuit board.

It's a Wonder for enjoyce sounds. Make them deeper in the soul!

Great content, but it’s difficult to hear you. The music is much louder than your voice.

what if you swich the wires of te gray and jelow whit the blue and red you can rotate the tv to its original position an you dont have to conekt a second coil

@guskelty9105

7 жыл бұрын

I believe it is with the way CRT's create images by 'scanning' the beam across the screen. They scan top to bottom - left to right. The left to right scanning was probably just to fast for him to properly display audio frequencies so he used the top to bottom scanning.

@Thefreakyfreek

7 жыл бұрын

but swicing x and y is jus rotating te sceen 90 derees

@guskelty9105

7 жыл бұрын

But switching* the* x and y is just* rotating the* screen* 90 degrees.* Yes but the scanning speed for X-X and Y-Y are diffrent. X-X scans faster then Y-Y. This is because for every Y incriminate it scans a whole row of X.

@JordanPool13

6 жыл бұрын

different* increment*

4:38 hey guys, do you smell mercury?

I don't understand how you connected the crt to speakers

how about a frequency generator?

in memory with dat music lol

@KeystoneScience

8 жыл бұрын

Hahaha, such fond memories with that tv :P

Which wires should I touch with my tongue for that zing effect?

@KeystoneScience

6 жыл бұрын

Probably the red one. The other one is ground, so one wire will do ;) Obviously don’t actually do this 😅

The thing that sincerely baffles me, is how many great electricians and engineers that make these amazing instructional videos and for some reason they all have the same flaw. They have advanced knowledge of circuits and signal processing etc... and for some unknown reason THEY ALL CANT FIGURE OUT THE AUDIO FOR A YOTUTUBE VIDEO! Either it’s clipping to shit like this one or its way too quiet. You see crazy $ put into a scope or tools, and they couldn’t hack together a decent mic and preamp? And also understand what hard clipping is?

It’s a shame braking a tv you can use it in the bathroom 😅 if you don’t have free space (I still use crt)

wow😨😨 you great

I have seen a channel that is a guy who makes music that makes cool animated pictures on your oscilloscope. you should check it out.

@stephendeben1590

7 жыл бұрын

Joseph Chinn jeroboam fenderson

I belive I just shorted out my TV. Is there any thing I can do so that it will work again? Thanks in advance.

@KeystoneScience

7 жыл бұрын

+CallForPlay where did it short out at?

@CallForPlay

7 жыл бұрын

So... when I got this tv, it wasn't working. I learnt it was a simple problem with the flyback Anode. It was misplaced. I basically put it on the right position, and turned the tv on. It worked properly! Well, at least for the next 2 minutes, hehe. I turned it off, and when I turned it back (actually, just plugged it on the outlet, and it started by itself) it behaved like yours. It took some time for the image to appear, the image presented those diagonal strips, and after some time it would turn itself off. That's all I know... Hope I can still save this tv for useful experiments! :D

do a vid on how to make a step up converter for 3-4000V pls :D

@tarynmuntean7153

7 жыл бұрын

Pieman 3.14 Hey wassup

@BurningTirez

6 жыл бұрын

Voltage double circuit.

@chrismuntean

Жыл бұрын

Damn 6 years ago I was 10 y/o 😅

Special TV

Please respect the things man, Good signal display demo though.

make a diy fluoroscope from a CRT TV

does it have to be crt

@KeystoneScience

7 жыл бұрын

+John Osborne for this, yeah . But I'm sure you can find one for free around :D

pROBABLY CANT DO IT SOMETHING SMARTER THAN THIS

curious me: how do you know this stuff in such early age??

@KeystoneScience

7 жыл бұрын

+Patrick Sarmiento I'm not quite sure tbh, I haven't taken any classes or anything yet, but I guess it's just fun to take apart things and learn from them :D

@mshubham00

6 жыл бұрын

he is on time, YOU ARE LATE!!!... lol

But. but... YOU WERE JUST AT 10K subs yesterday and now you have 17k???

@KeystoneScience

7 жыл бұрын

+Edward Sun haha I know xD, 2 days ago I was at 3k subs :D

@officer_baitlyn

7 жыл бұрын

your channel was shown on my main page i dont have a huge sample size but i think u might be getting some deserved love from the youtube algorithm Keep up the good work :^)

@ichoozjc

7 жыл бұрын

Keystone Science 5 days later and now you are at 48k nice! Now teach us how to hack KZread to get the same results 😀

@ArturBernardoMallmann

7 жыл бұрын

You got viral! congratulations!! i'm happy of find your video. For the history: now you have 65k!

I aint avin it, wheres my hammer!!

1:38 horizontal

I still don't get why breaking the screen was inevitable.

@ethand4784

2 жыл бұрын

he had two, one of them he accidentally caused the flyback transformer to short I believe, and its pretty near pointless to try and find the exact flyback for that specific tv, he could just find another on the side of the road

também to construindo um kk

I'm the only one who see the thumbnail hahaha like if you saw it 🤣

Last part looks satisfying. I recommend everyone does the same.

@KeystoneScience

7 жыл бұрын

+Alpha Zen yes, quite :D

It’s way funnier too blow it up lol.

phillips system awb catode close

it would be Better to make such digital oscilloscope that can show up the Frequency , voltage , Delay , amplitude etc using arduino and its crt tv communication Program will be much better

Now study ‘ acoustics ‘ and microphones

Please wear mask while breaking the TV the gas present in that is not good for health

Audio was mixed horribly

I think I'm in love.

Good video, but background music is terrible.

I got mad

BPl down sumita horror

You know that there’s X-ray radiation in there right?

😂😂😂😂😂🤣😆✅✅✅✅✅✅✅✅✅✅✅✅😊

There is no serious information in this video.

I wish you'd go ahead and stop saying go ahead.

@KeystoneScience

7 жыл бұрын

+Leslie Russell fine , perhaps I'll go ahead and stop saying go ahead

Thumbs Down for Breaking it

turn off the music

The clipping is annoying>.>

music too loud

Be forewarned TV'S can provide FATAL doses of electricity, They operate with high voltage even in what may appear "safe innocuous places" even after being unplugged. The hi capacity capacitors hold charges for lengthy periods of time. BE CAREFUL. Always unplug, let TV sit for at least an hour, then discharge the capacitors. Discharge capacitors with grounded screwdriver no bare metal where you touch the tools. Always use grounded electronic tools- rubber grips on handles (minimum, use best insulated tools you have). If you don't know what I mean by anything written above leave TV alone! Don't take it apart. Again take extreme precautionary measures. High voltage can kill!

what is point of this stupid music ?

Kill the annoying music!

@Keystone Science WTF!!!!!! Dude, CRT can implode!!! Smashing it with axe is dangerous!, you can get hurt rly badly!!!!!

@Keystone Science BTW that set was way smarter then you, becuase by shutting down after messing with HV saved u from exposition on X-rays!!!! Yes, CRTs can generate X-rays when you set too high anode voltage too high!!!