A better way to do it is to have the aluminiumfoil stick out at one end so it connects to the wire across the length of the roll and will have lower ESR and ESI
Great video! I am planning a tesla coil, and as much as I would like to use Cornel Dubilier Caps in an MMC, they are just too expensive. So I am debating rolled caps or saltwater Leyden jar caps. I am thinking that there must be a way to make rolled caps with Kapton film and foil by making a rolling jig that rolls the foil very flat, perhaps in a mineral oil bath, then submerged in an oil filled container and a vacuum applied to get any air out. With all this the Cornel caps don't look so expensive...
Double or triple up nylon. Roll entire thing then use refrigerator pump to saturate with resin from vacuum.. Like to see 100kV / 1uF could do. Be safe and excellent channel 👍
Yes it is true, but it's very hard to keep it free from impurities when in contact with other materials, because any disolved ions can ruin its dielectric state.
Polarity doesn't matter, this is not an electrolytic capacitor. The maximum voltage must be lower than the dielectric strength of the material, which can be found on the internet.
It is called ESR meter, you can buy it from Ebay and Aliexpress for under 12 usd. It can measure inductance, capacitance and semiconductors, not super accurate but very practical.
They only work well in DC current application and are not suitable for AC or high frequency switching application. For tesla coil are best suited capacitors with glass dielectric.
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Excellent video - good blend of theory, formulae and practical. Please make more.
A better way to do it is to have the aluminiumfoil stick out at one end so it connects to the wire across the length of the roll and will have lower ESR and ESI
Hi, thanks for the tutorial and explanation, gonna do it your way and try it!
Great video! I am planning a tesla coil, and as much as I would like to use Cornel Dubilier Caps in an MMC, they are just too expensive. So I am debating rolled caps or saltwater Leyden jar caps. I am thinking that there must be a way to make rolled caps with Kapton film and foil by making a rolling jig that rolls the foil very flat, perhaps in a mineral oil bath, then submerged in an oil filled container and a vacuum applied to get any air out. With all this the Cornel caps don't look so expensive...
NIce! That seems to have worked incredibly well.
Cool stuff.
Maybe make a huge capacitor?
that would fry someone to death in 1 nanosecond
Double or triple up nylon. Roll entire thing then use refrigerator pump to saturate with resin from vacuum.. Like to see 100kV / 1uF could do. Be safe and excellent channel 👍
DO YOU HAVE TO USE NYLON AS A SEPERATOR
Thank you. That was helpful.
Use distilled water,, its has 40times dielectric constant and same dielectric strength as nylon
Yes it is true, but it's very hard to keep it free from impurities when in contact with other materials, because any disolved ions can ruin its dielectric state.
Please highlight the calculation showing relation between area of dielectric and safe working voltage with capacitance value.
Pls make a marx genrator using a bunch of diy capacitors
Incoming video with your suggestion, stay tuned!
What is the kind of plastic used?
nice surface mount capacitor
Which is the positive electrode and which is the negative one?
How do you calculate the maximum voltage it can withstand?
Polarity doesn't matter, this is not an electrolytic capacitor. The maximum voltage must be lower than the dielectric strength of
the material, which can be found on the internet.
not sure what happened to the dieletric, it melt? or what?
It arcked through
What type of meter was that you used to test the capacitor
It is called ESR meter, you can buy it from Ebay and Aliexpress for under 12 usd. It can measure inductance, capacitance and semiconductors, not super accurate but very practical.
0:34 haha 1:21
so fine
That spark looks/sounds like it will really hurt you.
@G E T R E K T 905 no it’s not, it’s plasma level. Taser level is under 50k volts.
@@airzone9639if he really has 100nF and 30kV (somewhat doubtful) then it might be fatal. 45 joules of HV capacitor discharge is no joke.
I made one.
You are good at fabricating those monsters. Please put for sale on eBay I'll buy 10.
How make only at 100uf or 1000uf 🤔🤔🤔
Good job, but why 7:30 : 10 mm - 30 000 Volts ? May be 10 mm - 10 000 Volts ?
Thank you. Because the breakdown voltage of regular dry air is 3 million volts per meter, therefore 30kv/cm.
its not high as 30kv bc the dielectric pretty thin
This is a big wow
But dangerous
Cool.
Are you Russian?
Thanks for video.
No, i'm not Russian.
Romania🤣🤣
Make the biggest capacitor you can with your budget and try to power something!
yea! A electrostatic engine would be nice to be powered by it.
i built these for my tesla coil and they did NOT last long
They only work well in DC current application and are not suitable for AC or high frequency switching application. For tesla coil are best suited capacitors with glass dielectric.
@@ElectroScience I used polypropylene caps and my coil is now generating 500,000 volts. I posted a vid of it on my channel
あなたはインド人ですか？