Step 5: Charging the Leyden Jar

This jar is quite effective. It will hold a charge large enough to hurt you if you mishandle it. Be careful.

Update: I measured the capacitance with a handheld digital meter and got consistent results of 00.32 nF (that's 320 pF) for this model Leyden jar. A variant of the Soda Can Leyden jar made with polypropylene bottles rates as high as 00.50 nF (500 pf).

Connect the outside of the jar to a ground, such as metal stove top or metal water pipe. Run a connecting wire from your charging device (a Wimshurst machine, Van de Graaff, ion generator, etc) to the center brass post. The jar will take on charge until it reaches capacity. It may arc over (spontaneously discharge) if over filled.

You can also charge these jars from TV screens, friction rods, and any other source of static electricity.

Stringing a number of these jars in parallel will create a *very* powerful capacitor bank! Be sure to discharge the jar with a U-shaped piece of wire held in an insulated handle. You will get loud, powerful sparks from this device. Leyden jars can recover charge if left sitting, so for safe storage short out the jar by clipping a wire to the center electrode and having it touch the outer foil coating.
Where can I buy a Wimshurst machine? If you know where to get one at a store, then I would like to know. I cannot buy one from the internet because I have no credit card and I dont trust the computer for putting in a pin number.
I don't know about stores; I bought mine via the Internet from these folks:<br><br>http://www.sci-supply.com/index.asp<br><br>I suppose they would take a check or money order rather than a credit card.
one question...<br>would it make any difference if instead of putting a soda can inside the peroxyde bottle, i'd just put water inside and connect a wire to the water? (saves time in cutting up the bottle,...)<br>the outside of course would remain the same (Al on the outher side)
You would need to use a strong salt solution instead of plain water, then it would work. I don't think it would be as efficient as using a soda can, and the resulting jar would be messier and heavier. But if you're just making one jar as a demo, then salt water would be OK.<br><br>Paul
i'm actually not making just one, i need loads of them (making a tesla coil)<br>well, i'll just have to make one and see how well it works<br>thanks for the advice
now do you think i could use this with a coil gun
In theory I suppose you could, but you would need a lot of them, as the peroxide bottle Leyden jar usually only has a capacitance of 320-350 pF.
i saw one with 1nf<br />
Nice!5/5 rating.
Thank you. Post pictures of your jar, if you have any Paul
shin chan rocks
I don't have a hydrogen peroxide bottle now but when I get one...
<em><strong>HEHEHE HAHAHAHA!!!!!! ME LOVES TO SHOCK PEOPLE!!!!! HAHAHAHA!!!</strong></em><br/>

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More by Mr. Apol:Pipe Dream: A Low Voltage Tesla Coil or 'Slayer Exciter' The Model 1882 Wireless Telephone Making Light from Magnetism: Electromagnetic Induction & the Bedini Machine 
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