I've put together a guide to making a simple Corona Motor, using parts from around the house. It's a super easy to make electrostatic motor, good for science projects, fun, learning and a stepping stone to making more precision ones. Enjoy!
This is a really fun and informative video. I really enjoyed watching it. Maybe you can make a similar video of how to make a J. C. Poggendorff electrostatic corona motor? Since it is apparently the simplest motor around this would in my opinion lend itself perfectly to the do-it-your-self-style.
Thanks! Judging by the approximately 2mm (2/16") gap between the electrodes and the jar, the voltage is roughly 2kV. The current shows up too erratically on my meter to say what it is. It doesn't seem to be very constant, at least with this simple corona motor.
What if you use 2 corona motors, 1 to power each of the disks for the wimshurst machine. The wimshurst machine connects to a bank of capacitors that dump through a resistor to slow it then into a Tesla coil that connects to the corona motors while the primary continues to an outlet. use atmospheric charge to start it
Thanks. Yeah, this was intended to be a how-to using simplest parts and average tolerances - something for anyone who wants to try it and can't do precision. My HV flyback is still busted, haven't gotten around to fixing it yet.
:( What happened to the flyback? My good one died too. Burned out the flyback coils... Tried to re-make on another one. Cant find one that works near as well with the same specs. Back to the drawing board.
Mongrel Shark Oops. Did I say flyback? I mean HV power supply. I haven't opened it up to see what component is busted. Hopefully neither the flyback nor the tripler since they're the hardest to replace. It happened when I was experimenting with my ion propelled Enterprise. I guess the spacing between the sharp points and the smooth cylinder was too great - a few too many arcs in a row and it stopped working. Seems I'm always advising people to put resistors in series but I rarely do it myself. Groan.
LOL. I do stuff like that too. I think - If this was someone else I would tell them to fix this, oh well I'm really clever I'll be ok to spot it if it gets naughty... Then the smoke starts... I killed my flyback arcing to salt for too long. Overheated the coils. Internal corona did the rest. Never been sad to have not killed a transistor before... Is there an e-waste or something like that you could get more flybacks from? I got over 20 CRT's from Freecycle last year, and another 10-15 of nature strips... I only have one ac flyback with trippler though. Looks a lot like the splitter in a rear projection tv. If they are the same I have 3 of those. Could look into postage costs if your really stuck. When I take the gutted out tv's to the tip, they have an e-waste bin. Its a gold mine (Literally, cell phones and computers etc) Unfortunatly the council has a habit of prosecuting scavengers. so I have to try and get stuff before the council does.
Thanks, I'm glad you like it. But this motor doesn't produce voltage, however, sorry but I didn't measure how much voltage was required to make it turn. Probably it's in the low thousands of volts.
Glad to see you get into this and build one. It seems you studied the same people's work that I did. Brazilero2008's build guide at Instructables is what I mainly used for mine.
Actually my first version used aluminum foil for the electrodes, and it worked, but only at about half the speed of the version in this video. The foils were being attracted too strongly to the jar and making contact, slowing it down, partly due to friction but mostly I think due to the grip due to the attraction. Then I saw Brazilero2008's use of the roasting pan. Since it was something anyone could get there hands on easily, I switched the electrodes. That's why I gave him credit in the description.
Interesting device ....... will try to construct one myself......my question is why lined the aluminium foil inside the container rather than outside? Wouldn’t it more efficient on the outer surface?
No, if it's on the outer surface then it'll ruin the effect. The blades spray charge onto the cylinder. You want the charges to stay in the area where they are sprayed onto the cylinder's surface. With plastic, the charges stay in place since plastic is non-conductive, the charges stay in place (until they're removed by the next blade by spraying opposite charges). By staying in place, the charged area of the cylinder can be repelled by the blade, causing the cylinder to move. If the cylinder was conductive on the outer surface then the sprayed charges would be able to move around. When a blade sprays charge onto the aluminum, the charges would just be repelled away and there's be no charged area on the cylinder for the blades to repel against. You can see a bit of that explanation starting at three minutes and thirty-three seconds into this other video of mine th-cam.com/video/2rVdEhyMR6A/w-d-xo.html The purpose of having the aluminum on the inside is to help increase the electric field during repulsion.
Maybe I shouldn't have said the blades "spray" charge onto the cylinder. A better way would be to say that the blades charge the nearby area of the cylinder.
@@RimstarOrg hi Rstar! I successfully constructed my corona motor using ur technique powered by flyback high voltage transformer...😅😅. It does spin rapidly..... I also tweeted the design by placing 4 aluminium patches ( island ) on the outer surface of the container to face the 4 aluminium poles ...... it gives out very colourful corona . Thx again for ur help.....
Awesome to hear it! Thanks. BTW Having the same number of aluminum foil on the outside as you have poles makes sense. Since they're islands, when the blades charge them, the charge stays with the island.
@@RimstarOrg I used the corona motor to spin my Zoetrope animation .... the result was fabulous. Kill 2 birds with one stone. 😃😃. Thx for your insightful channel. Truly learn a lot....
Thanks. I doubt a neon bulb would do anything, at least with my simple one. That corona was very dim. I had to turn the camera shutter speed to minimum and then turn up the blue in my video editor to get it to show up so well.
hello sir my question is how to mesurement of van de graff generator's voltage and what kind of diff methods for mesurments voltage.thank you for positive reply. sir.
Measuring the voltage of a Van de Graaff generator is tricky, since there is no one voltage. You could ask what's the voltage of a VDG with nothing nearby. In that case it's the voltage between the dome and the surroundings, or if there is a bottom dome then it's the voltage between the top dome and the bottom dome. That would be a measure of the maximum voltage for the VDG. I don't know how you'd measure that voltage. But when you bring a measuring instrument near the dome, the voltage is now between that measuring instrument and the dome. Also, you'll get a different voltage depending on how close your measuring instrument is and even what shape your measuring instrument is. Often when VDGs are rated, the rating is for how high a voltage can be produced, though it's not necessarily the highest. A rough way to measure is to bring a grounded metal ball near the dome and see how long a spark is produced. You can then look that up online (do a search for something like "measure voltage using spark length"). The smaller the gap, the shorter and faster the sparks will come. I guess if you keep increasing the gap size, the longest spark you get before you increase the gap size again and get nothing will be close to the highest voltage, though the shape of your grounded metal ball will be having an effect. Voltage will also vary depending on humidity.
This video is very useful to me:) And I have a one question. Why did you sanding clothes hanger wire? What materials coating on it? I hope know that. I'd appreciate it when you'd let me know. Thank you very much.
I don't know what the coat is that's on it, but there was a coating with the one I used. It's probably there to help keep the metal from rusting or corroding.
Good guess, but not quite. The foil on the inside does help a lot, but is optional. It's hard to describe in words but... the high voltage electrodes spray charge onto the surface of the plastic jar. Since that surface there is now the same polarity as the corresponding electrodes, the jar is repelled from the electrodes. The direction is biased by the angle of the electrodes. When those charged surface areas get to the grounded electrodes, the charge is picked up by those electrodes and sent off to ground. The jar continues to rotate and the process continues.
You sir are a wizard. I would like to know the basics of electricity. Never took an introductory course is High school. Never needed to take one for my major. What do you recommend? Lol is there electricity 101 haha
Myles Bishop For the very basics I'd recommend going to a book store or amazon and looking for a book on basic electricity, one of those basic electricity for dummies types of books. They usually start very simple. There are probably good websites but I just haven't looked for any.
I don't know. The voltage is limited by the size of the corona gap, and since the corona is actually a conductor, the voltage isn't very high while it's running. But for startup, before the corona starts, with a gap of around 2mm (2/16") it's roughly 2kV. But that doesn't mean any 2kV power supply will work. I also needs some current behind it to give the charge needed to produce the repulsion that keeps it going, while also losing charge by conducting through the corona.
I'm not sure I get what you're asking. I show a Wimshurst machine powering the corona motor at 3:30 in the video. Or did you mean can the rotation of the corona motor be used to turn the disks of a Wimshurst machine? That would be cool, but I'm guessing that would be difficult to do unless you had a very powerful corona motor.
Since the corona motor is already moving in one direction you could use that spin for 1 wheel and use a another on the same shaft to get the whimhurst machine and get some charge back.
I love your videos! They give me lot's of related ideas--thank you for that. I would like to ask...When, at the end of the video, you used a sharp point and a dense E-field to spin the corona motor, I wanted to use something similar to discharge a large high voltage capacitor bank, something other than large HV resistors. Do you have any videos showing how to do something like/similar to this? Thanks, ...now back to your videos... --dalE
That's how I now discharge anything which is charged. I like it better than bringing a grounded ball near it since that produces a spark and my eyes are weary of UV damage from a lifetime of sparks. So instead I bring the sharp end of a grounded wire near it. That way the charge moves to the wire while the distance is greater than it would be with a smooth object and does so as a stream of ions too dim to even see. You can see me do it in this video th-cam.com/video/Gf6EbRmYImI/w-d-xo.html at around one minute and thirty seven seconds in. The wire is just a stranded wire and so the sharp end is really just the end of a bunch of strands. It's grounded to a power outlet in the same way I show at around seven minutes and ten seconds into this video th-cam.com/video/GEuK1OdYxHk/w-d-xo.html. And thanks! I'm glad to hear you're enjoying my videos! Thanks for watching them!
can you please what is corona motor.....where it is used?? and i have i doubt regarding dis...tat when u connect the wires[high voltage & ground] is there any external current flowing...can keep the hand -made wimshurst machine??wat u showed in other tutorial...if so where do v hv to connect ....where the spark comes or near the capacitors..... pls reply.....
Corona motors aren't used anywhere, as far as I know. They're just a fun thing to make and play with. I don't think my homemade Wimshurst machine can supply enough current to make this corona motor turn, but I didn't try it so maybe I'm wrong. My commercially made one with the 26cm disks can, as you can see in this video. You can connect it to either of the places you said, where the spark comes or near the capacitors - it will give the same result.
RimstarOrg Hello again. Thanks for thr info. Could you please check out my video @ th-cam.com/video/AemMxQlTLM4/w-d-xo.html And tell me what you think is going on.
Your sharp electrodes are spraying ions and then Newton's third law happens: for every action, there's an equal and opposite reaction. The blades in this corona motor are also spraying ions but the blades are fixed in place so they don't move. The cylinder moves, but that's for a different reason. The ion rotor is another ion sprayer which is more similar in terms of how it's used th-cam.com/video/UgWTjCHsm3M/w-d-xo.html. Not related, but if you're curious why the corona motor cylinder moves after the spraying, I explain it at the end of my atmospheric electricity video th-cam.com/video/2rVdEhyMR6A/w-d-xo.html.
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Can I use a old television screen to charge the corona motor? Thanks. António
Yes, you can use an old television screen. I just tried it. As soon as I turn the television on, the screen became charged and the motor quickly started spinning. But after a few seconds the screen was charged and there was no more current so the motor stopped. I turned the television off and on again but the motor didn't spin this time. I'd probably have to wait a while before it'll work again. But it did work, briefly. -Steve
can we substitute any thing else rather than wimshurct machine or van de graff for corona motor any simple things like battery or somthing else..... pls reply bcuz i hav science expo 2ommorow
You can try doing what I do starting at 4:20 in the video but instead of the Van de Graaff generator, try charging up a PVC pipe by rubbing it vigorously with cotton cloth (i.e. using the triboelectric effect) and bring the PVC pipe near the wire end instead of the Van de Graaff generator. You can easily charge a balloon or plastic soda bottle this way by rubbing it against your clean hair but I find the charge isn't enough to turn this corona motor. I'm guessing 1 1/2" diameter PVC pipe might work, but I don't have one to try. I haven't gotten this trick to work with my corona motor because this one doesn't have enough electrodes and the distance between the electrodes and the jar is too far. But as a quick, last minute thing to try, that's all I can suggest.
Not in any practical way. You could use it to turn a generator but you'd still need to power the corona motor in order to make it rotate. It would be more efficient to skip the corona motor and the generator and just plug your device into whatever you were using to power the corona motor. But if you want to do it just for the fun of it then you'd at least want to use my version 2 corona motor which can spin better th-cam.com/video/9uEjXsX1F14/w-d-xo.html
I think a sharper edge on the blade would reduce the required voltage. Also, getting the edge of the blade closer to the surface of the cylinder would help too.
is their any graph you could make from using this SIMPLE CORONA MOTOR Ex: Out of 20 Light bulbs how many can the corona motor power Another Ex: How long would it take for 10 phones to charge to 100% using a corona motor
I guess it's possible to make such a graph. But a corona motor isn't like an electromagnetic generator -- the kind you'd normally use. You can use running water, for example, to turn a normal generator to produce electricity. But if you use running water to turn a corona motor, you don't get anything out. A normal motor can also be used as a generator. A corona motor cannot.
I didn't try it with the CD version since, while it's easy to make, it's output is so feeble. My guess is that it would turn slowly. After all, I got my corona motor v2 to work using just the triboelectric effect (and it would probably work with v1 as well). th-cam.com/video/6x6DqPL14yU/w-d-xo.html
you said it was possible to charge a phone from this corona motor what exactly do I do to charge the phone and is their any possible way to do it with this simple corona motor
thank you for last reply but sir my problem regarding voltage someone say about mesured spark gap and mutipyed with 30 kv/cm . is that logic will be right for vdg generator.and wrong so sir tell me about what can i do.??
I just did a google search like I suggested you do and the table I found gave me around 30 kv/cm so that sounds about right as a rough value. You won't know the exact value anyway. Some of it depends on the diameter of the Van de Graaff generator dome and one the diameter of the electrode on the other side of the spark gap. I don't know any way to measure it exactly. Use a ruler for measure the spark gap. I don't know any way to predict the time.
naitik suthar sir my question is any type of formula use for voltage measurement by vdg parameters to conclude ideal condition for voltage calculations. i found google serch every where but formula we take mesured a charge &how to mesured a charge any type data available so sir can you mail my mail id is=naitiksuthar@gmail.com
naitik suthar I don't have any formula to give you. But asking what the voltage of a VDG is, is nonsense. It doesn't make sense. A voltage is a measure between two objects. You can ask what is the voltage between the dome and a grounded ball. You can ask what the voltage is between the top dome and the bottom dome of a VDG that has two domes. But asking what the voltage is of a VDG does not make sense. That is why you are finding formulas for measuring the charge on a VDG dome. That make sense. Charge is _basically_ the number of extra electrons or the number of extra protons on the dome. That can be calculated. The voltage between the dome and a grounded ball can also be calculated, but I don't know what that formula is. I'd have to sit down and start with a charge formula and then work from there to come up with a formula for the voltage between the charged dome and a grounded ball based on the distance between them, but I don't have time to do that. Hopefully the above will give you a better understand of voltage and what you are looking for. That might help you find it, and its the best I can do.
It's in the thousands of volts but I don't know how much exactly. It's certainly more than the usual sources available around the house. But if you look at this video th-cam.com/video/6x6DqPL14yU/w-d-xo.html you'll see that I powered another corona motor (though it would likely work with this one too) using some unexpected items from around the house or easy to buy at a hardware store (a PVC pipe and a cotton facecloth).
According to Oleg Jefimenko in his book "Electrostatic Motors - Their History, Types, and Principles of Operation" a corona motor with input power of 100 to 1000 watts can be 60% efficient. I don't know what the efficiency of a 1hp 3 phase motor is for comparison.
I'm pretty sure it's steel, made from iron. But any metal will do. Just make sure to remove any coating that may be one it where you'll be making electrical contact with it.
+saurabh jain Besides the soda can Van de Graaff generator you asked about in another video, a super easy one is to demonstrate it using the triboelectric effect like I showed here th-cam.com/video/6x6DqPL14yU/w-d-xo.html. BTW if you make a soda can Van de Graaff generator for it, make sure to see the part 2 video as well th-cam.com/video/QrCgtjZwnB0/w-d-xo.html. There are a lot more tips there.
Yes, though not necessarily a very powerful one. You can suspend a wire from a kite, balloon or even a drone a few hundred feet up with sharp points at the top end of the wire and use the bottom end as the high voltage input to this type of corona motor and it will run. It takes advantage of the atmospheric voltage difference which increases with height.
+saurabh jain That's a really tough question to answer. There are so many projects you can do but I couldn't say which would win. I also don't know your skill level at making things and what the expectations are for your the level you'd be competing at. Maybe just try something that you think you can make and that you yourself think is awesome. Most of the projects on my youtube channel and website (rimstar.org/science_electronics_projects) are things that can be made at home depending on your skill level.
It's a motor whose means of propulsion is electrostatic repulsion between blades and areas of a cylinder and whose means of charging those areas is by means of corona discharge between the sharp edges of the blades and the surface of the cylinder.
The corona results from applying a high voltage between a sharp point (in this case the sharp edge of the blades) and another object which is either sharp of smooth (as in the jar).
I don't have time to make them for others but what did you use as the high voltage source? Also, tell me anything which you did differently. The trick I use in this video with the triboelectric effect may work with this simple Corona motor, though I'm not 100% certain th-cam.com/video/6x6DqPL14yU/w-d-xo.html
Active in what sense? I'm currently working on my two-eyed robot, Izzy th-cam.com/video/DY4as7Lc9KY/w-d-xo.html , but that's a never ending project. I've done some work on a new video about it but my plans for the video require a 3D model of a human brain so I'm currently drawing that. But in the meantime, I respond to questions on my videos on a daily basis.
Yeah, I knew 0.5 inches isn't 1.5 cm. They were both just rough values, selected because they were nice and round and seemed workable. I guess I should have displayed them in a way that didn't make it seem like I was saying they were the same values. :)
![[LIVE] : ONE ลุมพินี 88 | คู่เอก "ป้อมเพชร vs อัสลามจอน"](http://i.ytimg.com/vi/1ZqTVVbMgbo/mqdefault.jpg)
TH-cam is thinking this 2014 video is about Covid-19 since it has Corona in the title, lmao.
A similar thing happened with my video about prisms when some NSA PRISM surveillance program became popular knowledge.
I've put together a guide to making a simple Corona Motor, using parts from around the house. It's a super easy to make electrostatic motor, good for science projects, fun, learning and a stepping stone to making more precision ones. Enjoy!
Fantastic Project gives me some good ideas. Thank you for making it!
Thanks Dan! I hope those ideas make it into one of your wonderful videos!
Very interesting.
It is nice to see a real home made hobby project. 👍
I see history is repeating it self again. Love the OG
This is a really fun and informative video. I really enjoyed watching it. Maybe you can make a similar video of how to make a J. C. Poggendorff electrostatic corona motor? Since it is apparently the simplest motor around this would in my opinion lend itself perfectly to the do-it-your-self-style.
Still so amazed of your efficiency and clarity :p
So Very Thanks For Sharing :)
Rimstar Strikes Again! Thank you, thank you for this video. I am collecting ingredients today and crashing this with Tech Ingredients ozoner.
What would happen if the corona electrodes had very fine serrations?
I'm not sure, that might be better but you'd have to try it.
Great video and Project!
How much voltage is on the red wires?
also how much current does the motor draw (no load)?
Thanks!
Judging by the approximately 2mm (2/16") gap between the electrodes and the jar, the voltage is roughly 2kV. The current shows up too erratically on my meter to say what it is. It doesn't seem to be very constant, at least with this simple corona motor.
What if you use 2 corona motors, 1 to power each of the disks for the wimshurst machine. The wimshurst machine connects to a bank of capacitors that dump through a resistor to slow it then into a Tesla coil that connects to the corona motors while the primary continues to an outlet. use atmospheric charge to start it
very interesting!
Thanks! I'm enjoying your work too!
wow veerryyy nice DIY video. thankyou very much!
You did a great job! Saludos desde México:)
Great tutorial. Thanks for showing it still works with average tolerances :) Have you tried it on the HV flyback supply?
Thanks. Yeah, this was intended to be a how-to using simplest parts and average tolerances - something for anyone who wants to try it and can't do precision. My HV flyback is still busted, haven't gotten around to fixing it yet.
:( What happened to the flyback? My good one died too. Burned out the flyback coils... Tried to re-make on another one. Cant find one that works near as well with the same specs. Back to the drawing board.
Mongrel Shark
Oops. Did I say flyback? I mean HV power supply. I haven't opened it up to see what component is busted. Hopefully neither the flyback nor the tripler since they're the hardest to replace. It happened when I was experimenting with my ion propelled Enterprise. I guess the spacing between the sharp points and the smooth cylinder was too great - a few too many arcs in a row and it stopped working. Seems I'm always advising people to put resistors in series but I rarely do it myself. Groan.
LOL. I do stuff like that too. I think - If this was someone else I would tell them to fix this, oh well I'm really clever I'll be ok to spot it if it gets naughty... Then the smoke starts...
I killed my flyback arcing to salt for too long. Overheated the coils. Internal corona did the rest. Never been sad to have not killed a transistor before... Is there an e-waste or something like that you could get more flybacks from? I got over 20 CRT's from Freecycle last year, and another 10-15 of nature strips... I only have one ac flyback with trippler though. Looks a lot like the splitter in a rear projection tv. If they are the same I have 3 of those. Could look into postage costs if your really stuck.
When I take the gutted out tv's to the tip, they have an e-waste bin. Its a gold mine (Literally, cell phones and computers etc) Unfortunatly the council has a habit of prosecuting scavengers. so I have to try and get stuff before the council does.
Well done! Thumbs up!
Thanks!
and another great video from you!
How much this motor produce the Voltages ????
Please tell me, nice video...
Thanks, I'm glad you like it. But this motor doesn't produce voltage, however, sorry but I didn't measure how much voltage was required to make it turn. Probably it's in the low thousands of volts.
This aged well
Glad to see you get into this and build one. It seems you studied the same people's work that I did. Brazilero2008's build guide at Instructables is what I mainly used for mine.
Actually my first version used aluminum foil for the electrodes, and it worked, but only at about half the speed of the version in this video. The foils were being attracted too strongly to the jar and making contact, slowing it down, partly due to friction but mostly I think due to the grip due to the attraction. Then I saw Brazilero2008's use of the roasting pan. Since it was something anyone could get there hands on easily, I switched the electrodes. That's why I gave him credit in the description.
Very cool!
Thanks!
Muy buenos videos!!! Te felicito
Interesting device ....... will try to construct one myself......my question is why lined the aluminium foil inside the container rather than outside? Wouldn’t it more efficient on the outer surface?
No, if it's on the outer surface then it'll ruin the effect. The blades spray charge onto the cylinder. You want the charges to stay in the area where they are sprayed onto the cylinder's surface. With plastic, the charges stay in place since plastic is non-conductive, the charges stay in place (until they're removed by the next blade by spraying opposite charges). By staying in place, the charged area of the cylinder can be repelled by the blade, causing the cylinder to move.
If the cylinder was conductive on the outer surface then the sprayed charges would be able to move around. When a blade sprays charge onto the aluminum, the charges would just be repelled away and there's be no charged area on the cylinder for the blades to repel against.
You can see a bit of that explanation starting at three minutes and thirty-three seconds into this other video of mine th-cam.com/video/2rVdEhyMR6A/w-d-xo.html
The purpose of having the aluminum on the inside is to help increase the electric field during repulsion.
Maybe I shouldn't have said the blades "spray" charge onto the cylinder. A better way would be to say that the blades charge the nearby area of the cylinder.
@@RimstarOrg hi Rstar! I successfully constructed my corona motor using ur technique powered by flyback high voltage transformer...😅😅. It does spin rapidly..... I also tweeted the design by placing 4 aluminium patches ( island ) on the outer surface of the container to face the 4 aluminium poles ...... it gives out very colourful corona . Thx again for ur help.....
Awesome to hear it! Thanks.
BTW Having the same number of aluminum foil on the outside as you have poles makes sense. Since they're islands, when the blades charge them, the charge stays with the island.
@@RimstarOrg I used the corona motor to spin my Zoetrope animation .... the result was fabulous. Kill 2 birds with one stone. 😃😃. Thx for your insightful channel. Truly learn a lot....
Great tutorial :)
I especially liked the distance of ionized air at the end. Does a little neon bulb do anything in that gap area ?
Thanks. I doubt a neon bulb would do anything, at least with my simple one. That corona was very dim. I had to turn the camera shutter speed to minimum and then turn up the blue in my video editor to get it to show up so well.
very good idea!
hello sir my question is how to mesurement of van de graff generator's voltage and what kind of diff methods for mesurments voltage.thank you for positive reply. sir.
Measuring the voltage of a Van de Graaff generator is tricky, since there is no one voltage.
You could ask what's the voltage of a VDG with nothing nearby. In that case it's the voltage between the dome and the surroundings, or if there is a bottom dome then it's the voltage between the top dome and the bottom dome. That would be a measure of the maximum voltage for the VDG. I don't know how you'd measure that voltage.
But when you bring a measuring instrument near the dome, the voltage is now between that measuring instrument and the dome. Also, you'll get a different voltage depending on how close your measuring instrument is and even what shape your measuring instrument is.
Often when VDGs are rated, the rating is for how high a voltage can be produced, though it's not necessarily the highest. A rough way to measure is to bring a grounded metal ball near the dome and see how long a spark is produced. You can then look that up online (do a search for something like "measure voltage using spark length"). The smaller the gap, the shorter and faster the sparks will come. I guess if you keep increasing the gap size, the longest spark you get before you increase the gap size again and get nothing will be close to the highest voltage, though the shape of your grounded metal ball will be having an effect.
Voltage will also vary depending on humidity.
Hey, i found a coil in an electric shaver. could you make a flyback transformer with it. would prefer a video.
I don't have any plans to make a flyback transformer at this time. Sorry.
This video is very useful to me:) And I have a one question. Why did you sanding clothes hanger wire? What materials coating on it? I hope know that. I'd appreciate it when you'd let me know. Thank you very much.
I don't know what the coat is that's on it, but there was a coating with the one I used. It's probably there to help keep the metal from rusting or corroding.
Looks like a capacitor motor, where the charge on the inside is attracted to the opposite charge on the outside.
Good guess, but not quite. The foil on the inside does help a lot, but is optional. It's hard to describe in words but... the high voltage electrodes spray charge onto the surface of the plastic jar. Since that surface there is now the same polarity as the corresponding electrodes, the jar is repelled from the electrodes. The direction is biased by the angle of the electrodes. When those charged surface areas get to the grounded electrodes, the charge is picked up by those electrodes and sent off to ground. The jar continues to rotate and the process continues.
You sir are a wizard.
I would like to know the basics of electricity.
Never took an introductory course is High school.
Never needed to take one for my major.
What do you recommend? Lol is there electricity 101 haha
Myles Bishop For the very basics I'd recommend going to a book store or amazon and looking for a book on basic electricity, one of those basic electricity for dummies types of books. They usually start very simple. There are probably good websites but I just haven't looked for any.
awesome!
What is the value of the high voltage you used?
I don't know. The voltage is limited by the size of the corona gap, and since the corona is actually a conductor, the voltage isn't very high while it's running. But for startup, before the corona starts, with a gap of around 2mm (2/16") it's roughly 2kV. But that doesn't mean any 2kV power supply will work. I also needs some current behind it to give the charge needed to produce the repulsion that keeps it going, while also losing charge by conducting through the corona.
could you use a soda can instead of the plastic jar?
Can we use 220v ?? direct connection in my switchboard
Perfect
Rimstar .. could you combine the corona motor with the wimhurst machine?
I'm not sure I get what you're asking. I show a Wimshurst machine powering the corona motor at 3:30 in the video. Or did you mean can the rotation of the corona motor be used to turn the disks of a Wimshurst machine? That would be cool, but I'm guessing that would be difficult to do unless you had a very powerful corona motor.
Since the corona motor is already moving in one direction you could use that spin for 1 wheel and use a another on the same shaft to get the whimhurst machine and get some charge back.
I love your videos! They give me lot's of related ideas--thank you for that.
I would like to ask...When, at the end of the video, you used a sharp point and a dense E-field to spin the corona motor, I wanted to use something similar to discharge a large high voltage capacitor bank, something other than large HV resistors. Do you have any videos showing how to do something like/similar to this?
Thanks,
...now back to your videos...
--dalE
That's how I now discharge anything which is charged. I like it better than bringing a grounded ball near it since that produces a spark and my eyes are weary of UV damage from a lifetime of sparks. So instead I bring the sharp end of a grounded wire near it. That way the charge moves to the wire while the distance is greater than it would be with a smooth object and does so as a stream of ions too dim to even see. You can see me do it in this video th-cam.com/video/Gf6EbRmYImI/w-d-xo.html at around one minute and thirty seven seconds in. The wire is just a stranded wire and so the sharp end is really just the end of a bunch of strands. It's grounded to a power outlet in the same way I show at around seven minutes and ten seconds into this video th-cam.com/video/GEuK1OdYxHk/w-d-xo.html.
And thanks! I'm glad to hear you're enjoying my videos! Thanks for watching them!
Thank You.
instead of WIMSHURST what can i use??
can you please what is corona motor.....where it is used??
and i have i doubt regarding dis...tat when u connect the wires[high voltage & ground] is there any external current flowing...can keep the hand -made wimshurst machine??wat u showed in other tutorial...if so where do v hv to connect ....where the spark comes or near the capacitors.....
pls reply.....
Corona motors aren't used anywhere, as far as I know. They're just a fun thing to make and play with. I don't think my homemade Wimshurst machine can supply enough current to make this corona motor turn, but I didn't try it so maybe I'm wrong. My commercially made one with the 26cm disks can, as you can see in this video. You can connect it to either of the places you said, where the spark comes or near the capacitors - it will give the same result.
will pulse dc work for this motor?
Can you tell me which would increase the torque.? Higher potential or more current.
I think more current. The potential at the blades is already maxed out once it starts conducting across the gap.
RimstarOrg
Hello again.
Thanks for thr info. Could you please check out my video @
th-cam.com/video/AemMxQlTLM4/w-d-xo.html
And tell me what you think is going on.
Your sharp electrodes are spraying ions and then Newton's third law happens: for every action, there's an equal and opposite reaction. The blades in this corona motor are also spraying ions but the blades are fixed in place so they don't move. The cylinder moves, but that's for a different reason. The ion rotor is another ion sprayer which is more similar in terms of how it's used th-cam.com/video/UgWTjCHsm3M/w-d-xo.html.
Not related, but if you're curious why the corona motor cylinder moves after the spraying, I explain it at the end of my atmospheric electricity video th-cam.com/video/2rVdEhyMR6A/w-d-xo.html.
Can I use a old television screen to charge the corona motor? Thanks. António
Yes, you can use an old television screen. I just tried it. As soon as I turn the television on, the screen became charged and the motor quickly started spinning. But after a few seconds the screen was charged and there was no more current so the motor stopped. I turned the television off and on again but the motor didn't spin this time. I'd probably have to wait a while before it'll work again. But it did work, briefly. -Steve
Thank you!
Can I use a AC Power Supply instead of the wimshurst machine ???
No, you need a high voltage, around 2000 kilovolts for my corona motor. An AC power supply is only 120 volts or 240 volts depending on where you are.
can we substitute any thing else rather than wimshurct machine or van de graff for corona motor
any simple things like battery or somthing else.....
pls reply bcuz i hav science expo 2ommorow
You can try doing what I do starting at 4:20 in the video but instead of the Van de Graaff generator, try charging up a PVC pipe by rubbing it vigorously with cotton cloth (i.e. using the triboelectric effect) and bring the PVC pipe near the wire end instead of the Van de Graaff generator. You can easily charge a balloon or plastic soda bottle this way by rubbing it against your clean hair but I find the charge isn't enough to turn this corona motor. I'm guessing 1 1/2" diameter PVC pipe might work, but I don't have one to try. I haven't gotten this trick to work with my corona motor because this one doesn't have enough electrodes and the distance between the electrodes and the jar is too far. But as a quick, last minute thing to try, that's all I can suggest.
can this corona motor power multiple lightbulbs and/or phone chargers and if so how?
Not in any practical way. You could use it to turn a generator but you'd still need to power the corona motor in order to make it rotate. It would be more efficient to skip the corona motor and the generator and just plug your device into whatever you were using to power the corona motor. But if you want to do it just for the fun of it then you'd at least want to use my version 2 corona motor which can spin better th-cam.com/video/9uEjXsX1F14/w-d-xo.html
Know the name of the ongoing pandemic 2020
How would one scale this motor, to run on reduced voltage, say for instance, if the wire in the air, was lower in elevation? Is this a dumb question?
I think a sharper edge on the blade would reduce the required voltage. Also, getting the edge of the blade closer to the surface of the cylinder would help too.
@@RimstarOrg Thank you so much!
is their any graph you could make from using this SIMPLE CORONA MOTOR Ex: Out of 20 Light bulbs how many can the corona motor power Another Ex: How long would it take for 10 phones to charge to 100% using a corona motor
I guess it's possible to make such a graph. But a corona motor isn't like an electromagnetic generator -- the kind you'd normally use. You can use running water, for example, to turn a normal generator to produce electricity. But if you use running water to turn a corona motor, you don't get anything out. A normal motor can also be used as a generator. A corona motor cannot.
Can this be used with the CD version wimhurst or do I need a bigger wimhurst
I didn't try it with the CD version since, while it's easy to make, it's output is so feeble. My guess is that it would turn slowly. After all, I got my corona motor v2 to work using just the triboelectric effect (and it would probably work with v1 as well). th-cam.com/video/6x6DqPL14yU/w-d-xo.html
you said it was possible to charge a phone from this corona motor what exactly do I do to charge the phone and is their any possible way to do it with this simple corona motor
It's possible, but I guess I wasn't clear enough, it's not practical. I wouldn't bother.
thank you for last reply but sir my problem regarding voltage someone say about mesured spark gap and mutipyed with 30 kv/cm . is that logic will be right for vdg generator.and wrong so sir tell me about what can i do.??
how to mesured a spark gap &wap will be mesured by with respak to time?
I just did a google search like I suggested you do and the table I found gave me around 30 kv/cm so that sounds about right as a rough value. You won't know the exact value anyway. Some of it depends on the diameter of the Van de Graaff generator dome and one the diameter of the electrode on the other side of the spark gap. I don't know any way to measure it exactly. Use a ruler for measure the spark gap. I don't know any way to predict the time.
naitik suthar sir my question is any type of formula use for voltage measurement by vdg parameters to conclude ideal condition for voltage calculations. i found google serch every where but formula we take mesured a charge &how to mesured a charge any type data available so sir can you mail my mail id is=naitiksuthar@gmail.com
naitik suthar
I don't have any formula to give you.
But asking what the voltage of a VDG is, is nonsense. It doesn't make sense. A voltage is a measure between two objects. You can ask what is the voltage between the dome and a grounded ball. You can ask what the voltage is between the top dome and the bottom dome of a VDG that has two domes. But asking what the voltage is of a VDG does not make sense.
That is why you are finding formulas for measuring the charge on a VDG dome. That make sense. Charge is _basically_ the number of extra electrons or the number of extra protons on the dome. That can be calculated.
The voltage between the dome and a grounded ball can also be calculated, but I don't know what that formula is. I'd have to sit down and start with a charge formula and then work from there to come up with a formula for the voltage between the charged dome and a grounded ball based on the distance between them, but I don't have time to do that.
Hopefully the above will give you a better understand of voltage and what you are looking for. That might help you find it, and its the best I can do.
RimstarOrg thank you sir.
what is corona motor is it related to corona discharge?? pls reply..
Yes, it's related to corona discharge. The corona I show in the video at 3:43 is corona discharge.
how many voltage do you use to run to the motor. thank you
It's in the thousands of volts but I don't know how much exactly. It's certainly more than the usual sources available around the house. But if you look at this video th-cam.com/video/6x6DqPL14yU/w-d-xo.html you'll see that I powered another corona motor (though it would likely work with this one too) using some unexpected items from around the house or easy to buy at a hardware store (a PVC pipe and a cotton facecloth).
How efficient are these compared to your standard 1hp 3 phase motor?
According to Oleg Jefimenko in his book "Electrostatic Motors - Their History, Types, and Principles of Operation" a corona motor with input power of 100 to 1000 watts can be 60% efficient. I don't know what the efficiency of a 1hp 3 phase motor is for comparison.
IIRC they can be up to 93% efficient. When it ionizes the air is it creating ozone in the process?
harryman11
I'm guessing it is, this type of ionization usually does. In this case there's too little ionization for me to smell it like I often do.
what would happen if you were to put 1 or 2 tesla coils by a corona motor?
That's hard to say. Tesla coils put out AC whereas this needs DC, so probably nothing will happen.
which metal is the hanger made?
I'm pretty sure it's steel, made from iron. But any metal will do. Just make sure to remove any coating that may be one it where you'll be making electrical contact with it.
With all these bottles how much peanut butter do you eat
How many volts does it need roughly?
Based on the width of the gap where the electrodes face the side of the jar, I'd estimate 2 kilovolts.
hey can a you tell me a power supply for this corona motor
+saurabh jain Besides the soda can Van de Graaff generator you asked about in another video, a super easy one is to demonstrate it using the triboelectric effect like I showed here th-cam.com/video/6x6DqPL14yU/w-d-xo.html. BTW if you make a soda can Van de Graaff generator for it, make sure to see the part 2 video as well th-cam.com/video/QrCgtjZwnB0/w-d-xo.html. There are a lot more tips there.
could this be used as a generator?
Yes, though not necessarily a very powerful one. You can suspend a wire from a kite, balloon or even a drone a few hundred feet up with sharp points at the top end of the wire and use the bottom end as the high voltage input to this type of corona motor and it will run. It takes advantage of the atmospheric voltage difference which increases with height.
I like an ice cold Corona....
Ha Ha! I should make a corona motor using a Corona bottle!
i wonder if i can make a bicicle out of this.
Excuseme i need this can you sell for me
hey can you plz. tell me an awesome project which I can completely make at home and also win the science project
+saurabh jain That's a really tough question to answer. There are so many projects you can do but I couldn't say which would win. I also don't know your skill level at making things and what the expectations are for your the level you'd be competing at. Maybe just try something that you think you can make and that you yourself think is awesome. Most of the projects on my youtube channel and website (rimstar.org/science_electronics_projects) are things that can be made at home depending on your skill level.
K thnx..
i would like to make it,so i naed the components required for this
I not speak english..more i like Very much
Can I use this jar for the project
NAME: wholesome pantry Almond Butter Creamy 1lb (17oz)
Sorry to bother and for lots of information
If the jar is plastic then yes. If it's glass then it's probably too heavy.
Thanks
Can I use a pencil instead of a pen for the project
Yes, you can use a pencil.
GREENPOWERSCIENCE sent me here
what is corona motor?
It's a motor whose means of propulsion is electrostatic repulsion between blades and areas of a cylinder and whose means of charging those areas is by means of corona discharge between the sharp edges of the blades and the surface of the cylinder.
how to make the corona?
The corona results from applying a high voltage between a sharp point (in this case the sharp edge of the blades) and another object which is either sharp of smooth (as in the jar).
Can you please send me one I tried it and it came out terrible. Doesn't even work PLEASE
I don't have time to make them for others but what did you use as the high voltage source? Also, tell me anything which you did differently. The trick I use in this video with the triboelectric effect may work with this simple Corona motor, though I'm not 100% certain th-cam.com/video/6x6DqPL14yU/w-d-xo.html
I think it was when I was bending the metal hangers that it messed it up. I think I bended poorly( it was hard)but it didn't work
He made corona 6 year ago but we are suffering in 2020
Lmao
whos watching in 2023?
Make into a jet engine ejecting the discharge out the back
This guy eats a lot of peanut butter.
It's a sacrifice I make to get those useful straight sided jars. :)
Are you active
Active in what sense? I'm currently working on my two-eyed robot, Izzy th-cam.com/video/DY4as7Lc9KY/w-d-xo.html , but that's a never ending project. I've done some work on a new video about it but my plans for the video require a 3D model of a human brain so I'm currently drawing that. But in the meantime, I respond to questions on my videos on a daily basis.
H-he made corona!?!
this video got flagged because of chinafloo XDDD
0.5 inch/1.5 cm :-) funny, perhaps 1.27 cm
Yeah, I knew 0.5 inches isn't 1.5 cm. They were both just rough values, selected because they were nice and round and seemed workable. I guess I should have displayed them in a way that didn't make it seem like I was saying they were the same values. :)
Ok. That's all right. Good luck.
I made it for my school project but that doesn't actually work🥲