Seeing Sounds with this TV // CRT Oscilloscope 

So in essence, you can store video on Audio Cassettes and then use the waveform patterns of both channels to draw pictures on an Osciloscope or Tube TV.

That intro where you took apart the TV was absolutely priceless! lol

Great video! The horizontal and vertical deflection coils were made to operate at different frequencies, so their sensitivity makes it hard to get a perfect circle

Interessant wie das aufgebaut ist.

Excellent video.⚡️👍🏻⚡️

This is the first and only video I’ve found of the exact same model tv I got

That digital to analogue delay though, cool lill project there 👌

parabéns,ficou show,também to construindo um desses

Excellent music!!!💥⚡️🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟⚡️💥🍻

How dare you make math cool.

What software are you using on the pc? Isit just a function gen? And what i get confused on when trying this is where exactly the preamps go in circuit because when trying to make a music visualizer the l and r channels go to the v and h def coils but when i put a preamp in between the input and coil the thing either just causes the feedback or something to put a big line on the screen that doesnt move.. is like its moving but only on that linear axis which doesn’t differentiate anything only making the line.. when i put amps on both the channels then i cant get anything besides the dot in the middle. With no preamps i get a tiny tiny visualization which is reason for preamps.. am i amplifying the current or something or adding an unnecessary resistance to it? Hard for me to keep testing and trying crap because i wind up messing up the crt and have to get a different one which are hard to find if looking for one.. lol

I realize how late I am to the party, Do the deflection coils need to be hooked up to a R and L channel? Could I hook both coils up to one channel? Or am I risking the tube?

I'm pretty unclear on how to connect the laptop to the amp. Any help appreciated!

I’ve been tinkering around with this with a Sony watchman and haven’t yet got the signals displaying quite right and they are weak. Are you amplifying them? I think that black box on the table might be a pre amp or something ? Also one of my channels is stronger than the other. I was going to try putting some op amps in it to be able to fine tune the signal strengths

The resistance of the 2 coper coils are different that's why the cercle is not perfect. You need to amplify the signal in one of the them to compensate. I fink that the difference in resistance is because the screen is not square it's a rectangular. You must find the resistance of the 2 coils and calculate how much more power you need to put in the most resistant coil .

What do you use to input signals and what connector?

Can you tell me whether an older CRT TV is required? Can you tell me how old is necessary? Should a TV from the 1980s be sufficient? Thanks for your video!

Could you make a movie in this? And show full images?

How can I decrease the scale of the oscillation, i made this with a small crt, the problem is that when i turn up the volume to moderate levels the wave move so much that is unpleasant to watch...is not aesthetic, great video dude gratings from chile 🇨🇱

I did a similar setup, but I used the internal FM amplifier of the TV instead of an external one haha

Hi maybe you can help me, I tried making something similar. I located the two separate pairs of wire for each deflection coil and soldered it to two audio jack sockets. But I came through a big issue. What I get when I turn the tv on is the initial dot in the middle but it stays super small but becomes really really crazy bright and after a few seconds i hear a pop, the display shuts and after a big static noise appears coming from the back of the tv and continues until I unplug the tv. Any ideas on what's wrong ? Any tips would be greatly appreciated. Thanks

genius

Nice! Woulda also been cool pipe the sound through the tv speaker.

what cable are you using between your laptop and amp?

I want to learn how to still have a picture while the sound frequency is being sent to the screen simultaneously without damaging the system. Cool stuff here!⚡️👍🏻⚡️🌟🌟🌟🌟🌟

Essa tv 📺 está com a saída horizontal e vertical ↕️⏸️ queimada 😮🎉🎉😅

Do you sell these?

Hi, I'm trying to replicate this, it worked at first but now the tv do not truns on corretly anymore. It lookslike it tries to charge up and fail ( zzzzzzz POP , zzzzzzzz POP , zzzzz POP ) . I think I may a damaged it but I dont know why.. Any Idea? This happended twice on two dfferent TV..

Does the polarity of the wires going into the amplifier matter?

if i ever end up in a time machine, i'm teaching five year old me how to do this, with the family tv

It's not the flyback transformer that has a charge, it's the crt tube that has a charge.👍

Holy shit i have a tv that is the same as that one and I am trying to turn it into an oscilloscope but im afraid I might accidentally kill the crt tube

Play some osiliscope music on it

Annoyingly it's virtually impossible to get those coils to align. The coil will limit current by using power to drive the magnetic field associated with it. Inductance is an absolute NIGHTMARE to account for in analogue systems like this. My solution was just to leave the vertical coil as is, run mono audio though the faster horizontal one, then turn the electron gun 90 degrees so it looks correct. Makes for a sweet vizualiser! Just not technically an oscilloscope...

No normal person is going to do this