Homemade High Voltage, Low Inductance Capacitor

[@jimawhitaker]

I have been watching videos on this subject for several days. Your method is by far the best I've seen so far and is the one I'm going with. Thank you very much sir.

[@ThePhilneale]

Great video. I love your accent every understandable and natural. A d you are very praticinle.

[@ThePhilneale]

Great video. I love your accent every understandable and natural. A d you are very praticinle.

[@ludicscience]

Thanks!

[@earnknowledge8019]

Great sir thanks alot I love watching your videos keeeep going

[@gristlevonraben]

I love your channel, man.

[@ludicscience]

Thank you!

[@FredtheDorfDorfman1985]

Using rounded corners on the Cu tape would help reduce corona losses also.

[@misaalanshori]

I'm not a camera guy, but I think you should try to make the shutter speed smaller so that the Sparks doesn't look wierd

[@FredtheDorfDorfman1985]

Actually an electrolytic capacitor has its aluminum "plates" separated with absorbent separating paper that's soaked in the electrolyte. The dielectric is an oxide layer that's built up on the anode aluminum "plate" strip. They anodize the anode aluminum strip which increases its surface area by creating microscopic pitting of the surface, then place it in an electrolyte that supplies plenty of oxygen and place a positive DC charge on it. They grow the dielectric oxide until its thickness is sufficient up to a maximum voltage rating that they choose, but usually not more than 600 volts, because electrolytes tend to break down at higher voltages, the dielectric oxide can only handle up to so many DC volts, thicker dielectric layers decrease capacitance significantly, and the point of this type of capacitor is high capacitance. Then it is sandwiched between two absorbent separator strips, the negative foil is placed on top of the other strips, leads are connected to the foils, the assembly of strips is rolled up, it is inserted into an aluminum can with breakage grooves that form a vent if the capacitor fails so it doesn't explode, electrolyte is added, and a plastic plug seals the capacitor up.

[@ecospider5]

It would have been cool to see you charge the capacitor then test it with a volt meter. But I understand 10,000v multimeters are rarely just lying around. Maybe charge it then disconnect. Then create the arc. The distance of the arc would relate to the charged voltage.

[@FredtheDorfDorfman1985]

Or use some high voltage resistors to create a voltage divider that would divide by a known value, then test across the connection between the resistors and low side. Divide by say 100 and the meter should tell you 100 VDC, which you would know means 10,000 VDC. Just be sure to use HV resistors with a tight tolerance so you'd know 100 VDC means 10,000 VDC +/-1% or less, as opposed to say 10,000 VDC +/-5%, which could be within 9,500 or 10,500 VDC, or +/-10% which would be anywhere between 9,000 to 11,000 VDC...

[@ecospider5]

That is a fantastic idea. Thanks.

[@jakefriesenjake]

I believe that the input charges the cap, at every strike, then releases all voltage at once, at every strike. Without the cap, it just sparks a the regular fast frequency, but with it added, it builds up the volts, then releases it. I believe that if you were to make the cap twice as big, the spark would be even slower to build, then release.

[@peterstiles1]

Love your videos. Keep them coming. : )

[@das250250]

@5;01 you made an error in saying to connect the purple/ blue lines together. These are dielectrics, not conductors. You should have connected to the orange lines. You could also cut tabs on the sides located in staggered location ( like a filing cabinet) so that you can solder one layer to the next

[@ludicscience]

You´re right!

[@kamalmichael]

Is the tabs needed and if so how did it work with everything soldered together

[@das250250]

john michael not sure what you are asking exactly . The copper tabs are alternated left side , right side , and all the rights are soldered together and all left together which creates parallel capacitance . Parallel capacitance adds to be equal to c1+ c2 + .........Cn. So more layers increases capacitance.

[@xONEWINGx]

Is the HV output AC or DC?

[@chrisleech1565]

I bet you can smell the discharge arc. Does it have an odour? I am quite surprised at the difference. and will make a nice side project for a high voltage generator such as in one of your previous projects :-)

[@ecospider5]

Any arc like this through the air will create ozone. So yes it will smell just like an electric motor that is putting out a lot of sparks. Of course the sparks are hot so anything that can burn will. Like the tips of the electrodes which might also cause an additional smell.

[@fransjebik8554]

Hoi Ludic Science. Many thanks for this explanation. Very useful. So, when I have made one like this of yours, where shall I connect it in my solarsystem 12 V. Before the charche controller or after the charche controller. I have a converter for making 12 V to 220 V on my batteries (3000V-6000V). Really need very much an (simply) information. It is winter now and I have hardly electricity and my Plasma Q6 and Q24 are going down. They had already more than 110 V inside and now they are doing nothing, so no grow, and the Voltage is now between 55 V and 110 V. Again thanks for this video.

[@tohirincupaxkreatif4791]

How if the copper plate changed by aluminium?

[@ludicscience]

Yes you can do that

[@pavanpratapsinghchauhan6804]

waiting for your next video .................this one is awesome as always😇😇😇😇

[@sorinbutacu2249]

Muy buenas. Tu voz suena mejor en castellano. Yo tengo una curiosidad:si pones una cinta de cobre y una de aluminio? Y la otra es:como se polariza los capacitores de corriente directa?

[@rob3125]

5:05 You did a mistake in your drawing! You connected the wires to the dielectric material instead of the conductors! otherwise great video 👍

[@democracyforall]

How much is the current?

[@rob3125]

@@democracyforall it's probably

[@mikebarton3218]

Another great video. Thanks for sharing.

[@amubai3688]

Nice, can we use alminum cigarate backatte paper also.

[@aurthorthing7403]

Can you use aluminum tape instead of copper?

[@Zrzyck]

Yes, you can, but it will be worse in some aspect (dunno how it will affect capacitor). Also You will be unable to solder it.

[@Chuckiele]

Yes, but you wont be able to solder the terminals, because aluminum does take solder very badly. You would have to find another way of to common the terminals together.

[@1995epicfail]

it will affect the esr (the equivalent series resistance)

[@everest3334]

"Wiewiór: Also You will be unable to solder it."hmm perhaps you (coke)can ;) Robert Murray-Smith, Published on Jan 3, 2017 A friend of mine was asking about this and it looked like a great use of copper nanoparticles to me... kzbin.info/www/bejne/a5uwZmuDmrqKnbc remember that coke cans have a plastic coating on both sides so you need to remove at least one side if you are going to try this as a combined plate.... see also Copper Plating Without A Battery (to steel etc) kzbin.info/www/bejne/sF6UpWWAm7GJgac 'Green' Copper Nanoparticles With A Household Blender kzbin.info/www/bejne/aYnGoHiur76IkMU Coppering Gel kzbin.info/www/bejne/roStgn1ted18i5Y How To Make Your Own Flux kzbin.info/www/bejne/aJWnmIiobLOjd5Y Etching Aluminium For Improved SuperCapacitor Performance kzbin.info/www/bejne/nJ3almNvhZWCaLs etc, etc kzbin.infoplaylists

[@Chuckiele]

actually aluminum cans are commonly used for capacitors.

[@z08840]

Such coil does not increase inductance - there are parallel conductors with opposite current flow inductance of which cancel each other - as a matter of fact your capacitor will have higher inductance - because you connected plates from opposite sides - you can decrease it by connecting wires from the same side.

[@DonaldWatkinsIII]

Do you mean to imply(say) that this capacitor will have a stronger magnetic field?

[@z08840]

yes, when you connect plates from opposite sides it means (for alternating current) that all current flows always the same direction in both plates - any flow of current creates a magnetic field. But if you connect plates from same side - current will flow in opposite directions in these plates, creating opposite and equal magnetic field, which cancel each other.

[@slingshotsteel7203]

Well made video 👍 Hope to see more 😁

[@udhi_gn3893]

No no no... Regular rolled electrolytic caps probably doesn't have much of an inductance because the plate and dielectric layer is folded in half before it is rolled, making a turn around which cancels out the inductance. The manufacturers knows what they're doing.

[@mariusionita9129]

Hi, I want to ask if you measured the capacitance? How Many Farazi Was Resulting? What tensine can flow constantly? I'd like to build more supercapacitors to power a DC engine for as long as possible. How many layers and what length should I get to get a supercharger of 3000 Faras and 2.7 V? Thank you.

[@ludicscience]

This method is not for supercaps

[@garyweber6413]

Hello great stuff.Is the higher inductance caused by being rolled up?

[@FDroid01]

Yes. Because of the cylindrical shape the magnetic fields combine in the center, creating an area of higher inductance

[@basileok2222]

Which is the positive electrode and which is the negative one? How do you calculate the maximum voltage it can withstand?

[@mohitmaurya9371]

Ludic sir....can i use aluminium foil instead of copper tape???

[@johncoates1923]

Why not try it out yourself instead of sitting on your arse watching shit

[@VolpeJosesk]

@@johncoates1923 be respectful, your stupid It's good to ask and search before trying out, you have to have answer and formulate a theory before doind the practice, so you can save costs

[@VolpeJosesk]

Yes, you can use anything that can conduct energy well, alluminium is a good alternative, but be warned that your capacitance will be not the same with the same quantity of copper foil

[@DiyEcoProjects]

Hi can i ask something please... good instructional video rthank you. What would happen if you put 12v though it?

[@ecospider5]

The capacitor would get charged to 12v. So you would have 10nf (Nano farads) of electricity at 12V. The farads is kind of how many electrons you can hold. The max voltage of a capacitor is how excited those electrons can be before they jump across the plastic barrier. So this capacitor can not hold a lot of electrons you would need a lot more layers for that. But those electrons can be very excited at 10,000v without the electrons jumping and making an arc through the plastic. When you only put 12v across it you are not utilizing the fact it has the thick plastic layers. The plastic layer in standard 12v capacitors is very thin so you can get more layers of conductor in the same space but you will get an internal short at 24v or so which would mean no high voltage use. This is why a 100nf 12v capacitor is so small compared to a 100nf 600v capacitor. The 600v capacitor needs much thicker insulating layers.

[@OreilleGauche]

Great! Very interesting, thanks!

[@MrLeo1623]

Why would someone use all aluminum (no copper), if I want a 12 volt 30 amp super capacitor?

[@pozitifbilgisayar3630]

it seems a hi-voltage tv transformer (10k-30k voltage). It can sparks itself. what is the aim of this copper plates between cables ???

[@thebeststooge]

That capacitor wasn't wound as a coil because a coil is like a spring but was instead wound in a cylindrical manner. Inductors are normally wound in a coil shape though.

[@godfather00cz]

will there be a high voltage project?? :)

[@ramirogarcia5977]

thank you.,can you make a video how to make a high current and about 14 volts dc.

[@nirsai438]

sir, can we use this capacitor as a battery in a smartphone? ???

[@ludicscience]

No

[@graphenepixel8231]

10 nano farads is almost nothing compared to the cellphone battery, but this one would be way too high of voltage.

[@txd]

The wires coming from the capacitor will also have some inductance. and you should also consider the skin effect. maybe use some thick litz wire instead :)

[@txd]

quangluu96 yes exactly. If hes purpose is to discharger the capacitor as quickly as possible he needs to consider those aspects

[@ludicscience]

+txd oh yes litz wire

[@aigleblanc3966]

Hello amigos t'as vidéo et super ! mais il faut pas oublier que beaucoup de personnes n''on pas les mêmes materieaux que vous ! tout ce que vous présentez sur votre vidéo on le touve pas dans le commerce hi merci a vous .

[@martinblouin3639]

instead of the film, could you use the copper tape with kepton tape?

[@Gaark]

yes, as long as you dont have gaps that a spark could go through

[@alpergokcek6756]

Pretty simple and usable for beginner guys..

[@sivodesilva9866]

Can I use this for my ebike ..instead off an accu ..combine it with step down volt booster ..???I hope somebody can help me it's for a selfcharging ebike..

[@کامران-ر2د]

How much advertising?

[@lingkarangcreative8397]

may i parallel 12v 18650 battery with 12v accu?

[@lorriecarrel9962]

Sub scribed for sure

[@boyanatanassov9263]

What makes this capacitor capable to withstand 10000V? Just because it is 10nF? How thick is the dielectric? How thick is the copper tape? Can you stick two copper strips into one? How can you make a Super Capacitor? Say 1F on 240V???

[@VivaMessico]

You can not build a super capacitor at home. Supercaps for 240V don't exist. The only way to make it, you'd have to put 90 single cells (2.7V) in series. And balance them.. But making 1F 240V like in the video you would need a bigger house.

[@boyanatanassov9263]

Got it... But why is it that High Voltage Caps always have small capacitance and small voltage caps like 2.7V have high capacitance of say 3000F like the Super Caps on AliBaba...

[@boyanatanassov9263]

I mean Why is it a problem to have it both? Hi Voltage and High Capacitance... Why is the above capacitor in LC's video so low in capacitance... And what are low voltage high capacitance capacitors made of? Is it the isolater is it the plates? And why they say that it is impossible to have a Capacitor that doesn't leak... I do have a big fat 7.5V 70000uF Cap... I pumped it up to 12V and it never budged... What is usually the tollerance for those big caps? Do you think I can pup it up to like 24V from 7.5V rating on it? Im kind of crazy about Boost Converters and Super Cap Arrays...

[@everest3334]

viva "You can not build a super capacitor at home." you can and very small in comparison see A 1,700F Supercapacitor Robert Murray-Smith Published on Apr 3, 2015 kzbin.info/www/bejne/n3WVo4l9n6xlfrM and How To Make A SuperCapacitor - Step By Step Published on Feb 18, 2016 kzbin.info/www/bejne/Z3TIY5SraLWKpKs in fact its advisable with any inverted high startup loads to make and add in a supercap bank between your battery bank and inverter to smooth out any peaks generally today...

[@VivaMessico]

everest 333 Yeah, of course. I forgot about you free energy idiots. I just see a guy talking, no capacitor, no measurements. No sorry. But I'll correct myself nevertheless: NORMAL people can't build a super capacitor at home. Of course some very smart hippie people can do it in their kitchen ;)

[@HerbsPlusBeadWorks]

do you have an email Tony

[@zeuso.1947]

Why copper instead of aluminum?

[@ludicscience]

IT can be soldered

[@louisrozario6420]

Good video

[@0011-b2s]

Sounded like a Taser pulse firing! Hmmmmm?

[@ItaloLima]

Cool !!

[@leopoldofernandezjr.508]

Nice expirement.

[@boyanatanassov9263]

Why is the spark laud but invisible when you connect the capacitor in parallel?

[@ludicscience]

+Bojan Atanasow camera effect

[@boyanatanassov9263]

I see... But the lauder sound? Is it because you have a charge of the new Capacitor followed by a discharge + voltage of power supply?

[@Chuckiele]

An inductor (in this case the secondary of the flyback transformer) and a capacitor have a resonant frequency that is inversly proportional to the squareroot of inductance times capacitance, so increasing the capacitance of the arrangement (there was a negligible parasitic capacitance before) will decrease the resonant frequency, lowering the frequency of the sound created by the spark, which in this case is within the audible range now, and also increasing the pulse periode making it louder.

[@boyanatanassov9263]

WOW!!! Thanks Bro for the extended response... It is awesome... So basically you are saying that in a way this setup turns into some sort of a Boost Converter and the Capacitor when it gets charged produces the LOW front of the square pulse, thus allowing the magnetic field stored in the coil to discharge increasing the original Voltage and current several times depending on the frequency of the pulse... Am I on the right side of understanding whats going on or am I not getting it?

[@VivaMessico]

Um no? It's a capacitor in parallel with the output of a flyback transformer. There is no boost converter here. The cap discharges very fast, the camera only records a picture once every 1/30 seconds and can't capture it properly. Try taking a picture of lightning during a thunderstorm and you'll see the problem.

[@sithlord6613]

Awesome project I was wondering can it be possible to build a voltage multiplers along with your previous high voltage diode too

[@davemwangi05]

Yeah, I'm wondering whether those diodes can function at high frequency.

[@nos.navarro3132]

Excellent video. But the draw in minute 05:00 is wrong.

[@graphenepixel8231]

Why?

[@richardbalboa7161]

At the time of 7:12 he says that 10nF = 10,000V capacitor maxima voltage capacity.

[@scottamata]

great! that transformer was small for 10kv

[@EsamoKoram]

Great

[@wizardman42]

all capacitor vids are blacked out

[@Lovreli]

Cool...

[@oyisam908]

Tumbas ng ndi?

[@Fumacenta2tempos]

Where are you from?

[@ludicscience]

+Gabriel Velloso that is not important

[@EsamoKoram]

You saw nothing :D

[@notimetodie6083]

🙏🙇 india

[@kengamble8595]

👍👍

[@maxpert9]

Lmfao at 5:00 you connected the dielectrics in your own diagram 😂😂 mostly good info but damn too easy mistake to present people in your diagram

[@achmadsyafari1847]

👍

[@achmadsyafari1847]

👍

[@AnDyity]

Make a transistor and diode.

[@1959Berre]

LOL!

[@int16_t]

Kon duk tor.

[@robertkat]

Capacitors do not have inductance, go back to school.

[@ludicscience]

Even a simple wire has inductance. You go back to school before posting nonsense.

[@starofeden9277]

Somerhing doesnt make sense here....where is the carbon and acid layer....this is fake

[@graphenepixel8231]

That would be a chemical electric battery.

[@starofeden9277]

@@graphenepixel8231u sure??

[@graphenepixel8231]

@@starofeden9277 it is different than the solid state capacitors.

[@rickhalverson2252]

There are many ways to make capacitors. Many many different designs.

[@starofeden9277]

@@graphenepixel8231 ok