Search found 52 matches

by ScottC
Mon Nov 29, 2010 2:05 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: FICS Fusion...early stages
Replies: 13
Views: 3768

Re: FICS Fusion...early stages

You can polish the glass edges with a belt sander using fine grit (800 - 2000) sand paper (preferably wet). You could also mill o-ring grooves in the aluminum discs to seal them.

Scott
by ScottC
Tue Nov 23, 2010 4:26 am
Forum: Vacuum Technology (& FAQs)
Topic: Need help identifying vacuum transducer
Replies: 2
Views: 1655

Re: Need help identifying vacuum transducer

That's probably the type, both read about 25 ohms.

Thanks,

Scott
by ScottC
Tue Nov 23, 2010 1:25 am
Forum: Vacuum Technology (& FAQs)
Topic: Need help identifying vacuum transducer
Replies: 2
Views: 1655

Need help identifying vacuum transducer

<t>I have some new toys that I can't identify (yet). These transducers have an 8-pin tube-type connector, but only use 4 terminals (and two are connected together). The only markings are "38 SPEC" on one and "38 DP" on the other. See attached photos. The inside appears to contain an ionization vacuu...
by ScottC
Thu Apr 09, 2009 11:28 am
Forum: Books & References
Topic: RE: SolidWorks student edition drawing program
Replies: 3
Views: 3926

RE: SolidWorks student edition drawing program

Look closely, it's only a 90 day limited edition.
by ScottC
Tue Jan 13, 2009 12:01 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: newbie questions...
Replies: 15
Views: 4814

Re: newbie questions...

<t>What you just asked is not a stupid question, but it's kind of like asking "how does a car work?" The scope of the question is so vast, that it can't be answered without writing a book.<br/> <br/> So, read up a bit on the workings of a fusor, and ask questions that are closer to what you really w...
by ScottC
Thu Jan 08, 2009 12:30 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: PC Data Logger
Replies: 13
Views: 3874

Re: PC Data Logger

A capacitive proximity sensor may also work for a bubble counter.

Scott
by ScottC
Tue Jan 06, 2009 3:36 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Electrostatics for dummies - Faraday Cage
Replies: 21
Views: 7720

Re: Electrostatics for dummies - Faraday Cage

<t>I would say that you have to consider the shield gap size of the cage also. If it's not a solid, then it will only shield frequencies with wavelengths longer than the cage "gaps", otherwise it's a semi-transparent just like a fusor grid.<br/> <br/> A single ground rod could be considered a (very ...
by ScottC
Wed Dec 31, 2008 7:09 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Make a spot welder
Replies: 31
Views: 13025

Re: Make a spot welder

<t>I made something similar a few years ago. You may have trouble with the copper electrodes sticking to what you're welding. I made mine from brass with a tungsten insert in the center that I could change out. It worked well with small SS wire also. I like the drill press idea, I'll have to set som...
by ScottC
Tue Dec 30, 2008 9:01 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low voltage/impedance..direct drive "Tesla coil"..100 Kv 50ma ac
Replies: 16
Views: 5720

Re: Low voltage/impedance..direct drive "Tesla coil"..100 Kv 50ma ac

<t>WinTesla also outputs a transmission line model for PSpice. I don't see any new information in that paper. Corum is not unknown in the Tesla coiling field.<br/> <br/> You'll find out when you actually try and build your device, what I'm talking about in terms of frequency tuning.<br/> <br/> I may...
by ScottC
Tue Dec 30, 2008 12:10 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low voltage/impedance..direct drive "Tesla coil"..100 Kv 50ma ac
Replies: 16
Views: 5720

Re: Low voltage/impedance..direct drive "Tesla coil"..100 Kv 50ma ac

<r>Hey Gabriel,<br/> <br/> Interesting idea, but I think you have some challenging engineering issues to resolve first. I've tried to isolate a Tesla coil before by wrapping it in a HDPE sheet, and it made it into an instant capacitor that arced violently inside from the windings to the HDPE. I don'...