Archived - I got my demo fusor working

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Charles Elkins
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Archived - I got my demo fusor working

Post by Charles Elkins » Tue Nov 06, 2007 4:21 am

I finally recived my second pump and got the demo fusor work tonight. I will soon be getting a diffusion pump and begin building a better machine. I attached two photos of my fusor it may be the cheapest ever built I have only spent about $120 on it.
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Steven Sesselmann
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Re: I got my demo fusor working

Post by Steven Sesselmann » Tue Nov 06, 2007 5:45 am

Well done Charles,

Just be careful with that glass bell jar, if it is not the right kind of bell jar, it can implode and injure someone.

Steven
http://www.gammaspectacular.com - Gamma Spectrometry Systems
https://www.researchgate.net/profile/Steven_Sesselmann - Various papers and patents on RG

Digix
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Re: I got my demo fusor working

Post by Digix » Tue Nov 06, 2007 1:34 pm

Great idea, why I did not thought about that, and it looks great.
Here is what I made instead(just for vacuum testing)


jars are designed to keep some vacuum so they will not implode for sure.
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Charles Elkins
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Re: I got my demo fusor working

Post by Charles Elkins » Tue Nov 06, 2007 2:01 pm

Thank you for your concern. The thought of the glass imploding is always continually in the back of my head. When I first started drawing a vacuum in the globe I was putting a trash bag over just in case. When I bought it I checked all of them on display and picked the one with no bubbles chips or imperfections that I could see. I also calculated the safe wall thicknesses for a glass vacuum sphere this size which is 2mm and the safe flat thickness for 44mm which works out to 5mm. The globes walls at the bottom edge where its thinnest are 1.89mm and its 5~6mm thick on the flat part. Its work very well so far but I still worry that I will over heat the glass and cause it to crack and implode. I will be building another machine using a diffusion pump and I won’t be using as thin of glass on it.

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Charles Elkins
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Re: I got my demo fusor working

Post by Charles Elkins » Tue Nov 06, 2007 2:11 pm


For insulation on my pass threw I used a sparkplug gable that I pulled the inner wire out of a old sparkplug cable it’s rated at 50,000 and 500ºF. I also used PVC connectors for the pass-through. I put masking tape over the bottom stuck my wire threw then filled it with epoxy I also had tape holding the core centered. I used 5 min epoxy that comes in the syringe thing that mixes it for you. I let it set for about an hour and presto one high voltage pass threw.

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Charles Elkins
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Re: I got my demo fusor working

Post by Charles Elkins » Tue Nov 06, 2007 2:21 pm

Here are some photos of my other core, the epoxy suringe got stuck and messed it up because it didnt get enough hardener
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Nanos
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Re: I got my demo fusor working

Post by Nanos » Tue Nov 06, 2007 3:39 pm

Several people suggested to me that I needed something like a non-magnetic stainless steel cage around it, as such I've gone for fine stainless mesh wrapped around the outside of my glass bell jar. (Though someone else suggested it wouldn't be a bad idea to put some inside too lining the glass.)

abhaylett
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Re: I got my demo fusor working

Post by abhaylett » Tue Nov 06, 2007 6:34 pm

Congratulations Charles! Can you give us some details about your vacuum system and your power supply?

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Charles Elkins
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Re: I got my demo fusor working

Post by Charles Elkins » Tue Nov 06, 2007 10:44 pm

The power supply is a rectified 12kv 30ma neon light transformer My educated guess is that it puts out about 10,900 vdc. The vacuum system is two rotary style air conditioning compressors in series. They each have inline filters and check valves so once the vacuum is pulled they can be turned off for 10 min or so before needing to be turned back on. The vacuum gauge is off a air conditioning fill manifold and I zero it before tests.
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Digix
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Re: Strange Phenomenon

Post by Digix » Wed Nov 07, 2007 12:02 am

what you made is not much of usual fusor. it is just glow discharge lamp, since no fusion happens there.

the patterns you see probably appears because your power supply have pulsations, or because your pressure is pulsating
it happens for me too when i tested glow discharge in simple glass tube.

try to put capacitor to reduce voltage pulsations and check if this pattern still exist then.

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