Search found 165 matches

by longstreet
Wed Jun 27, 2007 7:01 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Lens inside Cathode?
Replies: 19
Views: 6545

Re: Lens inside Cathode?

I think Bussard is on the right track about magnetic electron confinement. Using only electric grids is a dead end if you're trying to make power. Magnets maybe too but it has promise.
by longstreet
Thu Mar 22, 2007 2:08 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>Yes I have been thinking about a how to do a HV commutator.<br/> <br/> Also, one of the advantages I have thought about is that the machine could also be driven by an electrostatic motor. So, theoretically fusion product ions could drive it since they come out at high voltage. And assuming breake...
by longstreet
Sun Mar 18, 2007 12:00 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>I think I have some numbers now. The machine again has the charged plate and the free plate. The free plate can rotate on half of an axle so that for half a rotation (call it stage A) it is parallel to the charged plate seperated by a distance S, forming a parallel plate capacitor. The area of ea...
by longstreet
Sat Mar 17, 2007 12:35 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>I think you still misunderstand what I was talking about. The van de graff was only a HV source to initially charge the inducing plate. It's not important to what I was talking about. For all my purposes you could replace the inducing plate with a dielectric which has been implanted with electron...
by longstreet
Thu Mar 08, 2007 4:49 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>I have thought about this more and am not yet sure how to solve it. What I realized is by bringing the free plate close to another grounded plate I am creating a capacitor which rapidly drops in voltage as I discharge it, since V = Q/C. However, what I want to do is destroy the capacitance of the...
by longstreet
Wed Mar 07, 2007 11:34 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>edit: I am sorry. Please disregard the first paragraph of this post it is wronge.<br/> <br/> I have estimated the current for my example machine by this equation: I = (k*e_0*V*f*Pi*R^2)/(d). e_0 is the permitivity of free space, k the dielectric constant between the discs, V is voltage, f is rota...
by longstreet
Tue Mar 06, 2007 9:35 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

Re: electrostatic current generation

<t>Not quite. The grounded free plate along with the one connected to the van de graaff act as a capacitor. The plates build up a charge Q= CV, the capacitance depending on how well the plate is made. The van de graaff could be disconnected now with both plates having Q and -Q on them. Now both isol...
by longstreet
Tue Mar 06, 2007 8:58 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: electrostatic current generation
Replies: 19
Views: 3200

electrostatic current generation

<t>It's been a while since I have posted. I had to transfer schools last year so my fusor is on hold atm.<br/> <br/> However, I had a thought about generating larger currents from electrostatic machines. It seems easy to use something like the van de graaff to generate extreamly large voltages but u...
by longstreet
Thu Apr 20, 2006 2:58 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: An observation about insulators in a conducting fluid
Replies: 3
Views: 1359

Re: An observation about insulators in a conducting fluid

I'm not sure what you are trying to do. How can a grid act as an ion accelerator and at the same time not attract ions?
by longstreet
Sat Apr 08, 2006 7:22 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: General thoughts about matter
Replies: 22
Views: 3583

Re: General thoughts about matter

<t>Yes. there are zillions of electrons, but also zillions of protons. As the brick is moving you can imagin the electrons producing a current in one direction, and since there is equal and opposite charge of protons there is equal current in the opposite direction. The two currents cancel out.<br/>...