I know you probably won’t see this seeing that this video is 5 years old, but your channel is an absolute goldmine!! Amazing stuff!

That's crazy cool you made that. Holy moly sir.

This video was so cool to watch. Thank you for teaching me how to make a cathode ray tube cause it is not teached in my school. Btw I'm from India.

@ninado8790

4 жыл бұрын

Thank you for your like 😇

@gourangakhanduala2774

3 жыл бұрын

I'm also Indian

nice video, keep up the good work. also like how you explain things before and during the build. got a sub and a like

A cathode ray is not the same as a plasma discharge. A plasma (not blood) is an ionised gas, usually ionised by electrons from an HV source (AC or DC) whereas 'Cathode Rays' are a stream of electrons that continue through a circular anode with a hole, through that hole and onto a target such as a phosphor screen as in a CRT TV or maybe that oscilloscope I see in the background. Sorry if this seems pedantic but they are two completely different things with one demonstrating a controlled and focused stream of electrons (no ionisation) and the other being what you have here, a nice example of a gas that has been ionised in a discharge tube. They are not the same. Sorry.

@StrumpGunnar

3 жыл бұрын

Rob Beresford You are sort of correct. A cathode ray tube dosen’t need to have an anode with a hole in it to let electrons continue. The other stuff is corret though. However the tube still has cathode rays in it. A cathode ray tube is a type of discharge tube. You can see that the glass starts to iiluminate, proving the existence of catode rays. Of course this is not the cleanest cathode ray tube, it still shows the phenomenons caused by it, especially when he is using the magnet.

@sighpmm17

7 ай бұрын

@@StrumpGunnarThat’s the thing it’s in the definition of a what cathode means negatively charged. so a cathode ray should be negatively charged electrons and not what you’re saying and not what was displayed in the video either

good job !

Great video, but the air compressor may be redundant. There is arcing in your tube, which means electricity has broken through the air. If there was a vacuum in the tube, you wouldn't see the arc, only through the phosphor.

that's wonderful!!!

It's awesome bro ❤

nice work! :)

Very cool video. Haha I can relate with the work area having tons of stuff lying around. Every table that i own looks like that lmao.

This is very cool, I have been researching cathode ray tubes, I have been thinking about making one, I have been researching phosphor colors for the display. Maybe i can make something and can display numbers or even a picture.

O.K. Once again... I am learning. Tanner, Thanks for putting out these videos I can't get enough of them.

@TannerTech

6 жыл бұрын

Thanks! I've got more videos always coming.

Intro...👏🔥🔥🔥

It hard to make Cathode ray tube I make high voltage can it work in big lamp

How much electricity did you use in this and can cathode ray work by supplying 3000volts

Well done Tanner Tech, You deserve my subscription and thumb up. Please I will like to know how you build your power supply. Thanks in advance.

@TannerTech

4 жыл бұрын

Your welcome! This is video I made in the past. Good luck! kzread.info/dash/bejne/h4GG2NOMaZiZcag.html

Hi, good video, but I have a question. I made a small CRT tube. But I can not get the electron beam out, just the plasma is created. I have tried with different output hole sizes but the result does not vary. What is the proper distance between anode and cathode? I use 3 ". thanks greetings. -73-

@TannerTech

6 жыл бұрын

+J E that should be good. I think that your issue is that you have not pulled a high enough vacuum on your tube.

I've been wanting to make a Crookes Tube like this for a little while now. I was thinking of using common tungsten Drill bits as the cathode and anode because they probably will handle the arc better. Also, I was thinking that if I first melted some glass onto the bit and then fused the glass to the test tube it may seal more better ;). I've been a bit concerned about xrays though, even though it's unlikely it would be nice to test with a geiger counter for piece of mind. Perhaps your school has one you can use?

@maxk4324

5 жыл бұрын

I have been slowly working my way to doing some plasma experiments myself, but I too am worried about X-rays. I'm just a college student so I don't really have the cash for expensive testing equipment, and a Geiger counter is a pretty specific tool for something that may prove to be a non issue. Have you found any literature I could read to help me understand how to predict what EM bands will be emitted and at what strength based on the gas medium and driving current/voltage? It would be much appreciated.

@maxk4324

5 жыл бұрын

@Kevin Counihan I appreciate the advice, but I'm not so much interested in just generating any plasma as I am in using a very specific method of inductive plasma generation which will require me to custom build the vacuum tube and most of the powering circuitry as well. However, I don't want to go forward with it until I'm sure I'm not going to give myself cancer with these experiments. Or if x rays are unavoidable in my case, then at least I know to put money asside for some proper shielding.

Dont we need to fill the tube with Helium gas? With low pressure.

What's the value of high voltage

how many microns do you think is being achieved here?

How about possible x-ray generation? The glass seems to fluoresce. This is probably just low pressure discharge. I think your pump can not make high vacuum and cathode rays are also invisible. If there is high vacuum, the cathode needs to be heated. Be careful when playing with HV!

can you make the power supply out of entirely crt tv guts??? been wanting to try this have everything but the power supply oh and money none of that either

@TannerTech

5 жыл бұрын

Yeah, you probably could.

@inductor1.77

5 жыл бұрын

You can get around 10Kv from just a flyback, 1 Mosfet and 1 resistor. Very simple circuit I think Ludic Science has the schematic. To figure out the mosfet gate resistor I usually use a potentiometer and slowly decrease the resistance until it turns on. It's a simple and lazy way to do it.

it is so complicated to remove the compressor in the refrigerator isn't it

electroplating vs Electron gun??

Actually normally the Cathode ray tube are filled with noble gases

@ezramatan5233

4 жыл бұрын

That's called plasma discharge that's different. Cathode rays are usually vaccume sealed whith very little air.

Hey could you try this software? peruse circuit solver on the playstore!

@TannerTech

3 жыл бұрын

I might give it a try!

there is still gas in this tube by the glow discharge. it is not a vacuum! if it was a vacuum it would give no visable discharge

didnt you make x rays

@TannerTech

7 жыл бұрын

+Darren DIY No, this tube does not have a high enough vacuum nor a high enough voltage to produce x rays. X-rays require a near perfect vacuum and am yours of 100000 volts.

@DarrenDIY

7 жыл бұрын

oh ok that explained it

@MyProjectsTV

6 жыл бұрын

Tanner Tech The voltage is wrong. X-rays require just 25.000 Volts

ur k thode ray isnt electron ray with out filament cathoderay tube will not glow but in a dark room slitely seen visible lite ...ur tube is plasma tube...uve to add filament k thode ....and last ly need hard vacuum.....hi! ....with love amd.

Modok that you

One has no understanding of electromagnetic or electrostatic physics if one believes electrons are actual particles... Even J.j. Thompson refused to call them particles and he discovered the phenomenon.