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Registered Member #3637
Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Coronafix wrote ...
No, it is stored in the dielectric. Which makes you wonder what is really happening with a tesla coil top load.
Who says it has to be stored? What if its just given more "oomph"? Or maybe the topload is the dielectric itself. Everything has capacitance. A metal rod, your hand, anything conductive. So, that can be the dielectric and the plate combined into one big thing.
Registered Member #3114
Joined: Sat Aug 14 2010, 08:33AM
Location:
Posts: 608
no, the charge is stored in the plates that come very close. Its my under standing that you have more capacitance when you can get the plates as close as possible without arcing. The dielectric is just to prevent arc and all around insulating.
"An electrical capacitor is made of two small conductive plates separated by what is called a dielectric, which effectively insulates the two plates and stops any current from being transferred between the plates themselves. Instead, the two plates are connected through a circuit. When the circuit is taken out, the plates store the electrical current because it can't flow between the plates. The way a capacitor works is like a water storage tank with a shut-off valve if it gets too full. As electrical current enters the capacitor, the capacitor lets it pass through unaffected. However, the more current flows into the capacitor, the quicker it "fills." This then triggers the capacitor's shut-off mechanism, preventing electrical current from exiting and redirecting the flow to a grounding current."
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
Ok the Tesla coil thing was an aside, I don't want to confuse the matter. I am talking about a capacitor. If the charge is stored in the space between the two plates, then it is attached to the matter that is in this space. A vacuum does not have much matter in it because it is never a perfect vacuum, therefore what is the charge stored in to give it a dielectric constant?
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
Ok, it seems that appearance is decieving. The charge jumps from the plate to the glass surface because of corona discharge. Due to capacitance being a tension field, it pulls inwards. Hence casimir effect.
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Capacitor stored charge
