Search found 342 matches: +vacuum +safety

Searched query: +vacuum +safety

by Dennis P Brown
Sun Mar 19, 2017 6:10 pm
Forum: Images du Jour
Topic: John Beutz Fusor... The Story so Far
Replies: 24
Views: 3675

Re: John Beutz Fusor... The Story so Far

... - your pump is very small (volume pumping capabilities, not ultimate vacuum) and that could be an issue that bites you. That said, as long as ... before ever applying voltage to that 100 kV x-former; first, for safety reasons but also, if you burn out that x-former, or design/install ...
by Dennis P Brown
Sat Mar 18, 2017 5:01 pm
Forum: Images du Jour
Topic: John Beutz Fusor... The Story so Far
Replies: 24
Views: 3675

Re: John Beutz Fusor... The Story so Far

I posted a great deal on your vacuum issues and you now know what to do to get in the micron range with that system ... are rare and expensive. One does not want to blow those so care is not just about safety. Cables and connectors are extremely hard to find and new ones are extremely ...
by Dennis P Brown
Sat Mar 18, 2017 3:22 pm
Forum: New User Chat Area
Topic: Mech Pump and Transformer Questions
Replies: 20
Views: 2121

Re: Mech Pump and Transformer Questions

... a straight metal tube that has a KF fitting on its end (that type of vacuum tube is a good idea for that DP and removes the need for welding to ... design/system when the x-former was hot. Speaking of fusor electrical safety, your list should include confirming that you have a good ground point ...
by Richard Hull
Mon Mar 06, 2017 4:06 pm
Forum: FAQs: Fusion and Fusor Theory
Topic: FAQ - Voltage-Cross section-Current
Replies: 5
Views: 2039

FAQ - Voltage-Cross section-Current

... blocks to doing and proving fusion is not the reactor assembly, the vacuum system or the deuterium gas supply, themselves, (though they are important ... will require significant electrical or electronics skills. High voltage safety becomes of paramount importance to avoid being killed or injured ...
by Dennis P Brown
Mon Feb 06, 2017 12:14 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 4748

Re: Plasmagun/railgun for Stelarate

... without first checking them with the ground stick. Another important safety issue - caps that are rapidly discharged can over heat and explode. ... gets a good deal on the caps but that is another issue.)) The very high vacuum system is another matter and may not interest you for a small accelerator ...
by Dennis P Brown
Mon Jan 23, 2017 4:02 pm
Forum: Vacuum Technology (& FAQs)
Topic: Low Tech Gas Feed Solution
Replies: 15
Views: 2643

Re: Low Tech Gas Feed Solution

Richard, when you point out Townsend arc breakdown in a partial vacuum will be a great noise source across a rather broad spectrum , All I ... star ground configuration is used (and always a good idea to use this for safety!), one is also "piping in" huge voltage surges into the ground system ...
by Rex Allers
Sat Dec 31, 2016 10:30 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: The Beginnings of a Fusor Electrical System
Replies: 59
Views: 7920

Re: The Beginnings of a Fusor Electrical System

... sketch) or because an xray tube with a filament is essentially a vacuum tube diode that will automatically only pass the AC potential, that ... come from the same connection. Why are there two? Possibly redundancy safety on the grounding of the HV source. Now, let's think about the primary ...
by Andrew Seltzman
Tue Dec 27, 2016 2:02 am
Forum: Images du Jour
Topic: First Fusion for Liam David - Neutron Club Application
Replies: 14
Views: 2555

Re: First Fusion for Liam David - Neutron Club Application

... which allows the fusor to hold constant pressure with feedback from the vacuum gauge, and the ion sources that can be tuned for varying grid current ... the spellman supply to the fusor shell, adding this will improve system safety(as the ground through the AC lines can sometimes be a little iffy) ...
by prestonbarrows
Sat Nov 19, 2016 5:29 am
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum leak question
Replies: 12
Views: 2553

Re: Vacuum leak question

... However, it is quite safe with modest procedures centered around wearing gloves and avoiding contact. Ethanol is much better from a functional/safety standpoint. unfortunately, due to silly laws in the US, pure ethanol is difficult/impossible to come by. The average DIYer will find it impossible. ...
by prestonbarrows
Sat Nov 19, 2016 5:17 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: HVSafety Circuit for comments
Replies: 7
Views: 2147

Re: HVSafety Circuit for comments

Even tripping the mains lines of the supply does not guarentee safety. At these voltages, the capacitance of random parts floating out in ... enough energy to kill. In the case of a fusor, the internal grid and vacuum chamber make up what amounts to a high voltage capacitor. I can attest ...