Search found 95 matches

by UG!
Sun Dec 04, 2005 1:23 pm
Forum: Vacuum Technology (& FAQs)
Topic: gold plating vacuum components
Replies: 8
Views: 2764

gold plating vacuum components

<t>It occurred to me that if one were to gold plate the inside of there fusor shell, it might go some way to preventing water adsorbtion when the fusor was up to air. I was thinking of giving it a go with the next lot of modifications to my chamber, as i have some gold handy.<br/> <br/> It would pro...
by UG!
Tue Oct 04, 2005 7:52 am
Forum: Vacuum Technology (& FAQs)
Topic: What type of flange?
Replies: 6
Views: 3098

Re: What type of flange?

<r>you can get QF flanges as large as you like i think.<br/> <br/> this site has alot of information on vacum stuff:<br/> <URL url="http://www.lesker.com">http://www.lesker.com</URL><br/> well worth a brows through, they will give help and advice to non-custommers as well i think.<br/> <br/> there a...
by UG!
Sun Oct 02, 2005 5:22 pm
Forum: Vacuum Technology (& FAQs)
Topic: What type of flange?
Replies: 6
Views: 3098

Re: What type of flange?

i think its just a slightly different design of conflat. i have a UHV valve with those flanges thats happily mated to a normal conflat on my main vacuum chamber.

Oliver
by UG!
Thu Sep 15, 2005 3:42 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Operational fusors...NOW...How many?
Replies: 10
Views: 4750

Re: Operational fusors...NOW...How many?

<t>my plasma acheving fusor (i hesatate to call it demo, since that is not its intedned perpious, rather it is an incompleat (hopefully) neutron producing fusor) is 10 min away from a nice purple glow.<br/> <br/> progress has more or less ground to a stop however until i manage to get a job and some...
by UG!
Sat Aug 20, 2005 4:43 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Capacitor experiment
Replies: 8
Views: 3719

Re: Capacitor experiment

nat' semi' do a cheep electromiter opp amp LMC6042 with an input bias current of about 1fA. i built a nice electromiter amplifier with one for my dissertation.

Oliver
by UG!
Thu Aug 04, 2005 5:01 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Highest dielectric strength known: Pyrolytic Boron Nitride (PBN)
Replies: 21
Views: 17795

Re: Highest dielectric strength known: Pyrolytic Boron Nitride (PBN)

<r>this is an interesting point though. though water may be useless, but Methanol has a dielectric constant of 33, and is not nearly such a good solvent. methanol is cheep, and any remaining water could be removed with Richards copper sulphate method <E>:)</E> the cap would have to be sealed to prev...
by UG!
Fri Jul 29, 2005 8:33 am
Forum: Vacuum Technology (& FAQs)
Topic: discharge as pressure indicator?
Replies: 6
Views: 2367

Re: discharge as pressure indicator?

<t>yes, that is a good question, i'm useing an unsualy low voltage, 700V-1000V and i don't seem to get star mode at all, the discharge fades out at what my best calibration atempts so far would indicate is about 25microns.<br/> <br/> haveing a temperature stabalised 0.1Torr cap. manomiter is all wel...
by UG!
Wed Jul 27, 2005 9:42 pm
Forum: Vacuum Technology (& FAQs)
Topic: discharge as pressure indicator?
Replies: 6
Views: 2367

discharge as pressure indicator?

<r>I'm shour i have seen a post about this but can't seem to find it now. is it possable to tell the preasure from the type of discharge? <br/> there seem to be 4 distinct discharge types:<br/> <br/> 1)star mode<br/> 2)single plasma beam<br/> 3)single plasma fanout<br/> 4)random glow<br/> <br/> it w...
by UG!
Thu Jul 21, 2005 8:42 pm
Forum: Images du Jour
Topic: Archived - Nearly finished vac chamber UPDATE#1
Replies: 2
Views: 4378

Archived - Nearly finished vac chamber UPDATE#1

<r>Note* I have achived this mainly due to the fact that it shows that a fusor can be assembled from surplus junk vacuum "tee"s and other fittings. This can save $$$ over fabricating the classic spherical fusor. RH<br/> <br/> I have added a picture of the first plasma achieved. sorry for poor qualit...
by UG!
Sat Jul 16, 2005 5:37 pm
Forum: Vacuum Technology (& FAQs)
Topic: preasure cooker vacuum chamber
Replies: 2
Views: 2201

preasure cooker vacuum chamber

<t>recently i have made the unplesent discovery that the vacuum chamber i had hoped to use is made of UNWELDABILIUM (some kind of nasty 4xx grade stainless) whilst considering alternatives, it occurred to me a stainless steel pressure cooker might function adequately. <br/> <br/> most pressure cooke...