12:27 "there's also a lot of tape there to prevent corona" wow u can see in the future!
@RimstarOrg12 жыл бұрын
Nice! Lots of good construction tricks here. You got bit by the metal support wires descending down close to ground but your results showed you got around it very well. Well done video too! Very clear. Keep em coming. BTW At 0:32 you say triboluminescence effect when it's triboelectric effect. No big deal.
@AngelZapata111 жыл бұрын
I'm actually trying to make one and this video is helping me! Thanks!
@Goku1000ize11 жыл бұрын
Awesome work !!! I was making one...and this video proved to be very helpful...
@videos12344444444411 жыл бұрын
I'll mount one of these for a school project. I wanted to add something more scientific you know .. Not only mount the equipment and make run, but also include the Triboelectric series in the experiment and show how electric fields behave with different materials on the pulleys. Thanks for answering.
@power-max11 жыл бұрын
One last thing: RimstarOrg has a good video on the concept here, with nice visuals. I took his idea and improved the physical design in my video, so I get about a 1 inch spark per second
@hmarillejla77 жыл бұрын
A trick I've seen to prevent the band from wandering on the glass tube is make a bump in the middle of the tube. This keeps it in place.
@power-max11 жыл бұрын
Sometimes it is a bit of trial and error. Considering you did get napkins to move is very good. The bottom brush is indeed important and the wire coming from it has to be connected to something either grounded, or yourself (which is how I do it.) The adjustments I made are just minor adjustments to the brush and top glass piece so the band stays centered on the glass and doesn't scrub up against the tube.
@carlosnunez1512 жыл бұрын
okay thanks alot so i just hold the other end when i turn it on?
@power-max11 жыл бұрын
The wires connected to the terminals to the motor connect to a power source. The brush is grounded.
@smpcgazer12 жыл бұрын
hi! Would you please tell me if i could use black rubber for the belt?? thank you!!
@power-max12 жыл бұрын
Thanks! I plan to make a followup video on this showing about 6 cool thing you can do with it, as well as how to make the slayer exciter out of mostly scrape parts. maybe one on making a incandescent light too with pencil lead in a helium or CO2 filled to prevent oxidation? I currently don't have time but maybe in the summer.
@power-max12 жыл бұрын
Thank you. it took me over a week to finish his but I got it done! yeah, the paperclip being conductive is the biggest flaw in my design, and only allowing me to get 1 inch sparks. oops, I thought I fixed that when re-recorded the soundtracks... errr... well I added a annotation to fix that.
@power-max11 жыл бұрын
I added the lid because I noticed arking from the top load to the motor. The lid is there to help prevent that, but it won't help if you have an electrical leak somewhere. Take a look on google of the triboelectric scale. Any tape made out of material with electrically similar properties should work.
@shtl0rd36410 жыл бұрын
If you're looking for improvements on the range of static shock. I'd recommend an insulation of about 4 to 5 layers of Tin Foil to help the charge increase, put under the look-a-like Tuna can. Also, if you want more shock in less time, I'd recommend wires that are a little bit thicker -or just doubling the amount by tying the same wire twice in the same locations.
@power-max11 жыл бұрын
Sharp points and edges will cause the charge to leak faster than it can be built up. If you can, buff them out, or seal them up with plastic tape (preferably with clean electrical tape.) What are you using for a top load? A soda can? Adjust the glass top roller so that it only comes into contact with the glass and vinyl down by the motor. Make sure the brushes are less than 1mm close to the rubber band.
@power-max12 жыл бұрын
It's a 5 volt motor I pulled out of a old cassette player and I power it with a basic wall adapter (more specifically a 12V 0.7A power supply). From my own personal experience, the voltage applied to the motor makes for a sort of crud speed control. As long the voltage the motor is driven at is less than 2.5 times the voltage rating of the motor, it should be fine (just be sure that it is under only light load, not overheating, and the brushes are not sparking like crazy)
@smpcgazer12 жыл бұрын
ok, Thank You!! Do you have any other ideas for the belt that is really common?? I really need it.. Thanks again!
@KyleCarrington12 жыл бұрын
yeah the pencil lead incandescent is a cool one for sure :)
@power-max11 жыл бұрын
The switch goes between one pole of the battery and one lead of the motor. Then connect the remaining wire and battery pole together. the lid just helps prevent arcing and leakage between the top dome and ground, this way, a voltage can accumulate.
@kevinallen536511 жыл бұрын
Where are those sharp points and edges you are talking about? Yes I am using a soda can. What is the vinyl down by the motor? Does that necessarily need to have electrical take? Im going to add the plastic lid, does it need to be a certain distance and what does it work for?
@GreenRoomRecording12 жыл бұрын
Very clear and well done video!
@GadgetAddict10 жыл бұрын
I wish the background music wasn't there so I could hear what you're saying.
@power-max10 жыл бұрын
Yeah, trying to decide the ratio of music to me is difficult, as I sound horrible! Thanks for the feedback.
@kevinallen536511 жыл бұрын
Hi Max, I would like to ask you several questions about the generator you made. How important is the ground(bottom brush), and I can't see where you connect it to in the video. I also don't understand what ajustments you make at the end of the video. I made my generator i used a can on top and attached some pieces of a napkin I can only make the paper lift when I get my hand close but I can't get any sparks or the same potencial that your has. Would appreciate if you could answer soon.
@power-max11 жыл бұрын
Good luck! Make sure you use an aluminium heatsink on the LED if it will bw running at full power. Also, don't use standard batteries as they cant pump out enough juice to drive tye LelED. What type of driver do.you plan to use/make?
@power-max11 жыл бұрын
In order for this to work, only special materials can contact the rubber band to build up an electric charge. Electrical tape is made out of vinyl. Looking at the triboelectric scale, we see that vinyl is almost at the (-) end, and normal rubber is neutral (0). The top roller is glass, which is considerably more (+) charged than rubber.
@MCsCreations8 жыл бұрын
Really great! But why the plastic cap?
@power-max6 жыл бұрын
MC's Creations It impeoved isolation from the ground and reduced charge leakage, allowing for longer Sparks.
@carlosnunez1512 жыл бұрын
Hi whats that black wire you put close to the rubber band at the bottom what do you connect it to? Please answer me and I really like this video Good job.
@power-max12 жыл бұрын
I don't see why not. Google the triboelectric scale. the rubber you use should be found somewhere in the middle of the scale, in between vinyl (electrical tape I used at the bottom roller) and glass (fuse for the top roller) and as long as it does not conduct electricity well (otherwise the generator will short itself out as it tries to build up a charge)
@power-max11 жыл бұрын
Turn out the lights, look for faint blue spots and if you find any, turn the lights on again and seal it up with tape. trial and error is your best bet. It took me forever to get it to the point of the video. Also, is humidity high where you are? that will adversely affect performance.
@power-max11 жыл бұрын
It's all tn the video. I used a wall power supply (anything between 7-12V >300mA) or a 9V battery. A old phone charger is only 5V, so it will be a bit slower, but safer/better to the 5V motor.
@bradenbax196810 жыл бұрын
Built one, works great! Thanks!
@kevinallen536511 жыл бұрын
How do i know if there is an electrical leak? I think that is what is happening with my generator. Where do I chech for those sharp points?
@aaronevert950311 жыл бұрын
Sorry, two more things. Where do you connect the wires/What power source did you use? It looked like a plug in to a phone.
@aaronevert950311 жыл бұрын
Two questions I have...How to you install the switch on the Van De Graaff?/What is the plastic lid for?
@power-max11 жыл бұрын
The charge on the dome will be reversed, or at least in theory. How do you plan to mount the glass to the motor?
@power-max12 жыл бұрын
the black wire is part of the bottom brush. it collects charge from a large source (many electrons inside the earth and you!) and the rest of the generator crams it into the top piece. (the charge can be actual electrons, or lack of them, in which case the opposite occurs, the generator crams the negative charge on everything else) My generator does this. It sucks the electrons out of the top dome, and deposits them on everything else.
@mohammedsufiyan787611 жыл бұрын
where did you keep the other end of the brush which was connected to a motor???? I am making one.....
@smpcgazer12 жыл бұрын
Could you possibly tell me the voltage of your motor?? What power supply did you use and also its voltage?? thank you!! i really need this
@power-max11 жыл бұрын
Humidity is a suspect. But I can't imagine changes faster than a day-to-day basis. Sometimes it will randomly stop making sparks, then after hours of fruitless effort to get it working again, it goes as wanted. Waiting a day or so seems just as helpful.
@kevinallen536511 жыл бұрын
So I can connect that bottom brush to my self and it will work? Does it matter if the band scrubs up against the tube? I don't know what else I could do so I can get the spark anything I can adjust?
@kevinallen536511 жыл бұрын
What do you mean by sharp edges? That's one of the biggest problems I have that the band scrubs against the tube. What do you mean by grounding the motor? I have done this experiment so many times I'm beginning to get frustrated about it.
@kevinallen536511 жыл бұрын
Max, I finally got one centimeter sparks you can barely see them what adjustments can I make to get one inch sparks like you got?
@power-max11 жыл бұрын
Great! Glad you enjoyed it!
@aaronedvalson10410 жыл бұрын
Awesome, my roommate and I built one much larger than that and it barely worked. We're still trying to figure it out so this little device might make a good learning tool.
@power-max10 жыл бұрын
Can you describe the construction method? Maybe I can help some! Sometimes it is just a matter of the smallest adjustments. If you can get many short sparks but no long ones, you probably have a leak somewhere. Seal up or smooth out any sharp edges and nicks. That will allow high voltages to built up and larger discharges to occur. Other times it could be the brushes do not have sharp enough points and that they are not close enough to the belt. Play with that and the quantity of sparks should change. the grounding of the bottom brush is also critical. The electrons want to flow from/to that to/from the top dome. RimstarOrg also has some great info on this (he inspired me to build this) so you can check him out -->
@power-max12 жыл бұрын
the black wire connects to ground (a cold water pipe, a bare (uninsulated wire buried into the ground, even you can act as a ground connection, just hold on to the other end.)
@aaronevert950311 жыл бұрын
Thanks! By the way, I have another question. What is the electrical tape around the motor shaft for? Is it to make it wider, or is it to get better grip on the rubber band?
@michaelalexander732710 жыл бұрын
Love this but all that charge you are suppressing with the ductape, could it not be re routed to keep the battery charged?
@power-max10 жыл бұрын
I am not restricting any charge buildup with the duck tape, otherwise I wouldn't use it. the duck tape prevent the charge from leaking away. It is difficult to obtain such high voltages on any material without it wanting to leave. Unfortunately, the output is of way too high a voltage and too low a current to be useful. Imagine trying to drive a truck in 5th or 6th gear (a stickshift transmission) up a gravel road. You'll just choke the engine, even though it might have the total amount of power necessary. You can also imagine tring to run a toaster or other AC appliance from a battery. the maximum voltage output of the battery is way too low to power the toaster, and although something like a car battery can power a toaster, only after boosting the voltage. An inverter is required. Same here, except not only do you have *impedance matching* issues, you also have large power losses due to friction and poor design. the output is only good to make small sparks and make fluorescent lamps blink dimly. Because the total output will *always* be less than the input, eventually the battery will die even if you could charge the battery.
@oj1for1christ11 жыл бұрын
How do you test the voltage created. And could I run this voltage to a oscillating circuit to convert it into AC and then run it in a step down transformer to get enought current to light a Fluorescent bulb :D ?
@kevinallen536511 жыл бұрын
I did that but could see any faint blue spots, I'm not sure what I'm doing wrong. It is extremely humid here.
@power-max12 жыл бұрын
I am thinking about making s bigger more impressive generator by using a balloon and cutting out a strip (ring-shaped) for the belt. I am still looking for a better top piece, which seems like the hardest part about building a generator.
@UrLocalGunEnthusiast11 жыл бұрын
How many volts does the motor have to be to generate elecreicity like yours
@power-max11 жыл бұрын
To the ground, or yourself as a virtual ground. electrons leave the top piece (leaving it positively charged) and are crammed into the rest of the world. if it is you, that charge will want to leave to go to a positive source, including that of the generator top.
@randomman81811 жыл бұрын
How strong does the motor have to be
@aaronevert950311 жыл бұрын
Thanks again! :D
@CowCentralStudios11 жыл бұрын
It would help to add another pan turning the top into a hoo
@power-max11 жыл бұрын
Also, go into a pitch black room and look for sparks and leakage afteryou eyes adjust. then modify the design as nessesary. (Sorry for.bad spelling, this was typed on my S3)
@mihirsahu479310 жыл бұрын
great video but how i ground the wire indoor pls reply
@TechVentions10 жыл бұрын
U can hold it bare foot to ground
@power-max10 жыл бұрын
Physics Guy Just holding the ground wire in your hand will be enough to ground it! That ground wire is where the electrons are taken from to fill up the top load. There are plenty inside you to do that, and then those crammed electrons can jump back to you when you bring your hand close!
@TechVentions10 жыл бұрын
that is right but in case if you are isolated to ground by wearing a leather shoe or something like that u should be connected by being bare foot unless if you choose to stand on your hands ;)
@kevinallen536511 жыл бұрын
Ok I appreciate all of your help thank you! By the way I subscribed to your channel.
@RohanGeorgeAby10 жыл бұрын
why do u need a fuse? is their way to do it without a fuse?
@power-max12 жыл бұрын
Also, I see you have viewed many videos and stuff on KZbin about guitar. Do you play too?
@power-max11 жыл бұрын
Just mess with it for a while. use the generator in the dark and see if there is any electrical leakage or sparks from the topload. There should be no sharp edges. If the band scrubs up against something, it will slow down and not spin fast (faster = better) and might even leak the charge it is carrying. make sure the motor is grounded as well. Yes you can connect Grd to yourself.
@KyleCarrington12 жыл бұрын
Awesome video.
@Goku1000ize11 жыл бұрын
The one I have made is not so effective , its not repeling the papers and stuff , I have gone with the same method as yours but its not as effective as yours , what to do ?
@rkshukla64377 жыл бұрын
what should be the power supply being used in the video
@power-max7 жыл бұрын
Anything that can get a typical hobby motor turning, really. I used a 12V wall adaptor (the old fashioned unregulated type)
@rkshukla64377 жыл бұрын
Power Max Thanks
@rkshukla64377 жыл бұрын
Would u like to tell me From where did you get that wide rubber band I am not getting it from a stationary store instead can I use a rubber band of thin width Will it be wise to use that?
@marcigotnoscoped490810 жыл бұрын
the top roller is glass and the bottom roller is pvc.it work? Or the roller must be normal electrical tape?
@power-max10 жыл бұрын
Check the triboelectric chart, and see how low it is. Alternatively, you can try it and see.
@bhuwanbaluja454011 жыл бұрын
My rubber band is not as thick as yours Will that be a problem??
@power-max11 жыл бұрын
It should still work, but I'd expect the rate of charge-buildup to be diminished.
@sebastian108510 жыл бұрын
Were do you connect the other wire on The top
@power-max10 жыл бұрын
To the dome. That wire carries the charge to the outer surface of the dome.
@power-max12 жыл бұрын
Thank you!
@power-max11 жыл бұрын
sometimes my generator would not work at all (1mm sparks) for unknown reasons. Just look for leaks, seal the up, make sure the can is not sparking to a grounded object, etc. If nothing helps, wait a day or two.
@mwalton79518 жыл бұрын
Thank-you
@sissoko119 жыл бұрын
How do you control whether the top sphere is positively or negatively charged?
@power-max9 жыл бұрын
George Sohal By changing the design and materials used for the belt, top, and bottom rollers. 0:22
@deepwankawala11 жыл бұрын
Hey max what is the lower brush attached to from the other end(the end not facing the belt)?
@UrLocalGunEnthusiast11 жыл бұрын
How many volts does the motor have to be work like yours because your van de graaff generator creates electricity fast
@power-max11 жыл бұрын
It depends on what motor you decide to use. (Mine was rated for 5 volts, it was connected to a 9 volt power supply.)
@UrLocalGunEnthusiast11 жыл бұрын
I did all the steps but your van de graaff generator produced electricity really fast but my one takes some time
@power-max11 жыл бұрын
Khandakar Tasfique Well then good, your generator now just needs to be tweaked, make sure the rubber band is spinning freely and not scrubbing up against the side of the tube, this will let the motor spin faster, carrying the charge on the band up to the topload faster. Also, make sure there is no corona leakage, so seal up any sharp edges on the topload, This will help the charge stay on the topload, and thus, the voltage will build up quicker and to a higher potential. You can find corona leakage by turning on the generator in complete darkness after your eyes adjust. Then you can see where small purple streamers appear. Turn the lights on again and patch up the area with some tape. Make sure the top and bottom brush are close enough but not touching the generator, and the bristles are spread out far enough to collect the charge on all parts of the rubber band. the bottom brush connects to an electrical ground, or yourself. If all else fails, you can raise the voltage applied across the motor, but this may cause the motor to overheat and go bad, and also makes the generator a lot louder!
@videos1234444444411 жыл бұрын
What happens if I reverse the pulleys? (put the fuse glass down of the pulley and the tape pulley on the top?). I am interested in the property of electrostatic attraction of plastic materials (in this case, in the Dome attract plastics). Is there any difference in reversing of pulleys? grateful.(sry something, google translation ;)
@stoneebner21338 жыл бұрын
did you plug it in to the wall
@power-max8 жыл бұрын
I used a wall adaptor to convert 120Vac mains into a more manageable 12Vdc.
@chaitanyashinde97568 жыл бұрын
if he would have pluged into the wall it would give 120+v AC current
@amyferguson87907 жыл бұрын
and I'm sure it would die
@power-max11 жыл бұрын
Thanks!
@AdamSteidl11 жыл бұрын
would it levitate a small magnet?
@power-max11 жыл бұрын
No.
@power-max11 жыл бұрын
Thanks ;) (ps, it is pointless deleting your comments 'cause I will still get an email!)
@synespro10 жыл бұрын
what factors would allow to go beyond 30 kV?
@power-max10 жыл бұрын
To allow higher voltages to build up, you must reduce leakage from the top dome. This can be done in a variety of ways: * Use the generator in the dry environments so voltage can build up. Humid environments will essentially 'short' the output to ground. * Make the generator physically larger so that the dome is further away from ground, thus the electrostatic fields created are weaker and electrons don't jump to ground. This way electrons can only escape on command, intentionally by approaching objects to the generator. * Use a smoother, more spherical shape for the top dome, and use insulating materials (tape?) to seal up any electrical 'leaks' found. Because of the way electrons build up on sharp objects before spreading out over the whole surface, the larger voltage (more density of electrons) they will leak away easier. This can also be done with tape and insulating materials. There are probably some other, more clever ways to go about eliminating leakage, these are the 4 ways I can think of off the top of my head.
@synespro10 жыл бұрын
Power Max thank you.
@Archeopteryx10 жыл бұрын
Hi! where do you get the tube from? Thanks
@power-max10 жыл бұрын
Take apart a highlighter and cut it to size. I assume you mean the shaft of the generator.
@marcigotnoscoped490810 жыл бұрын
one more question. i made the brush with coke can it will work?
@Viralfobia7 жыл бұрын
Hey bro. Why is my van de graff generator not working? I've done everything mentioned.
@2passnthru29 жыл бұрын
where'd ya get the motor..?
@power-max9 жыл бұрын
+2passnthru2 radioshack, or from stuff I took apart many years ago.
@marcigotnoscoped49089 жыл бұрын
max,i have one more question. what can is use for the belt for the same rollers?yep,i look around the internet about that but i can't find good information.
@power-max9 жыл бұрын
I don't know why not: www.google.com/search?q=triboelectric+series+chart&biw=1536&bih=758&source=lnms&tbm=isch&sa=X&ei=7MIIVcbiKevdsATRv4GADA&sqi=2&ved=0CAYQ_AUoAQ I used a rubber band, which is made of latex, and it is in between vinyl electrical tape for the bottom roller, and glass for the top. Choose a material which lies between the charge preference for the bottom and top rollers that you choose to use. The further they are apart, the better the generator will perform. The bottom roller has to be more negative (or positive for reverse polarity) substance, and the top roller has to be more positive (or negative for reversed polarity). I think you are referring to a different design for the generator that is out of the scope of this design, if I understand you correctly, where both rollers are made of metal.
@marcigotnoscoped49089 жыл бұрын
Power Max yep. i want to make a bigger one.that gonna be 50.000-60.000 volts.but the nylon cant charge the metal roller. :(
@power-max9 жыл бұрын
Szentléleki Márton You will have to research into it yourself I'm afraid, I do not know much about the design that you are planning to build/troubleshooting. I am sure you can scale the version in this video up to be larger, but as you can tell it becomes exponentially more difficult to get the right materials where you want them.
@marcigotnoscoped49089 жыл бұрын
Power Max its very,very difficult to built a quite big vdg.i spent a lot of time to research the best belt and rollers but nothing is happens.the belt is my problem, i cant cut a good belt from my latex exercise belt.i spent a lot os time to watch videos and learn how it works,now i understand how it works.in the shops in my city i cant find stuff to my vdg ,such as belt.so i so sad beacuse i spent a lot of time and its dont work
@stoneebner21338 жыл бұрын
thank you
@power-max11 жыл бұрын
I'm not really sure, Small hobby motors like this usually do not have much torque. due to their construction, and like "constant-torque" supplies, where the amount of load on it (including friction) will dictate it's speed @ a given voltage. Any reasonably sized hobby motor should work fine, I was even able to overpower mine to >2 times the voltage. I'd keep an eye on temperature though
@marcigotnoscoped49089 жыл бұрын
the nylon rooler is froma nylon bag.it will wrk?
@power-max9 жыл бұрын
Szentléleki Márton IDK, probably. Try it and see.
@power-max12 жыл бұрын
that's what I do. that wire in negativity in respect to the top, and (from a different viewpoint) the top is positive in respect to the wire. unless your also touching that wire, you are just a neutral body, either collecting a charge from the dome or from the wire, and you get no dramatic sparks. you need to complete the electric circuit by touching one, and bringing your finger to the opposite side.
@marcigotnoscoped490810 жыл бұрын
mine is not working. i will build a bigger one...i hope its gonna work... its works? the bottom roller is teflon and the top is PVC? pls answer
@lakshyalalotra49157 жыл бұрын
It's not working my rubber band is not moving at all due to that tension what to do
@power-max11 жыл бұрын
Try a different rubber band, maybe overdrive the motor some (they can usually handle 3 times their rated voltage.) Make sure the brushes are very close to the motor but not touching, as this will destroy the band. when you turn it on without a topload, you should smell corona buildup on the wire. if so, it is working fine, but you will need a better topload.
@marcigotnoscoped49089 жыл бұрын
the nylon belt can charge the metal (positive)roller and the PVC(negative)?
@reak5148 жыл бұрын
search up the triboelectric series
@jccadwallander11 жыл бұрын
many thanks..
@power-max12 жыл бұрын
I also use my power supply as a ground, but is does not work as well, unless i too, am touching the power supply
@arjun63009 жыл бұрын
bro does ur hair stand when u touch it??
@power-max9 жыл бұрын
+Arjun Sheka Unfortunately no, but I have short hair. For that you need to make a larger one because this one does not supply enough current to allow the voltage to build up high enough for that.
@marcigotnoscoped490810 жыл бұрын
Can i use two rubber belt beacuse my is two slim. It Will work?
@power-max10 жыл бұрын
Probably.
@SuBinYoonOfficial11 жыл бұрын
can i use a wire that does not spread out for the motor? it is like... a single core thingy. asldo do it need a soldering iron? maybe i can use a lighter...?
@power-max11 жыл бұрын
I don't know what you mean by a /"single-core thingy"/ and by a /"wire thats spreads out for the motor"/? the wires to the motor are only for delivering power to it, it doesn't matter how it's accomplished. The brush of the motor should be very close to the rubber band belt, but not touching, and the wire bristles to need to be spread out to allow a maximum amount of electrons to 'hop on' and 'leave.' A soldering iron would be useful for soldering wires to the motor, but as long as you can transfer power to the terminals of the motor, thats fine. I understand not everyone has the same supplies I have, and if not, then use your head and come up with the crafty solution! I once tried using a lighter when I did not have an iron on-hand, I had no success whatsoever, but it wouldn't hurt to try?
@saieshwar97409 жыл бұрын
Bro pls help me that i saw ur video in this 10:40 (time) u wrote i forget to mention that u need brush/wire . pls tell what it is usually called as. i need urgent. pls help me. becoz we r doing project on that.