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Re: Low Tech Gas Feed Solution

... 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 which all your electronics can easily "see". ...
by Dennis P Brown
Mon Jan 23, 2017 4:02 pm
 
Forum: Vacuum Technology (& FAQs)
Topic: Low Tech Gas Feed Solution
Replies: 15
Views: 1809

Re: Daniel Klasing- Plasma Club Application

... chamber. Is that just not visible? Not a fan of spark plugs for high voltage feed-thru's. Besides a a gate valve, a decent HV feed thru is a very ... lethal and having redundant grounds is both smart and a critical safety feature - especial with a metal support structure. Using just a ground ...
by Dennis P Brown
Mon Jan 09, 2017 12:44 pm
 
Forum: Images du Jour
Topic: Daniel Klasing- Plasma Club Application
Replies: 3
Views: 670

Re: The Beginnings of a Fusor Electrical System

... engage a live teacher/mentor face to face. In fact it's essential, for safety among other things. We get people here who should be sent away to ... than any in the kit. Circuit A might be child's play. What's the voltage on each lamp in circuit B? What's the voltage between points X and ...
by Rich Feldman
Tue Jan 03, 2017 10:51 pm
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: The Beginnings of a Fusor Electrical System
Replies: 50
Views: 3965

Re: The Beginnings of a Fusor Electrical System

... the transformer in its circuit. The transformer basically had two high-voltage secondary sections. I forget the exact numbers but let me guess 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 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: 50
Views: 3965

Getting -35Kv

... at least -35kv @ 20 milliamps, while being able to vary and measure the voltage and current. Now, I will admit right now before I go into everything, ... if I wanted to do that, I couldn't afford to do it). 2. For simplicity, safety reasons, and reasons having to do with knowledge, I am really ...
by Robert Dwyer
Tue Dec 06, 2016 5:21 am
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Getting -35Kv
Replies: 8
Views: 1341

Re: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.5

... resistor value might do it, but the working dissapation will go up. The voltage drop would be not important, of course at most any value of ballast, ... the resistor...No big deal voltage wise. .007 X1050 = 7-10 watts a good safety margin would demand a 25 watt resistor (would just get warm) a ...
by Richard Hull
Sat Dec 03, 2016 9:05 am
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 151
Views: 12048

Re: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.5

... type. The human being is in total control and not some engineered safety trip point working in the micro-second or millisecond time frame to ... of 100ma or even more are possible as the user learns to apply the voltage needed to do fusion. The gas conduction regime rules the roost and ...
by Richard Hull
Wed Nov 23, 2016 9:19 pm
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 151
Views: 12048

Re: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.5

... now an 8 pound USB controlled, ethernet connectable, supply with 15 new safety inputs and interlocking custom signals to a micro-controller can easily ... this "recent" mass purchase group who actually gets measured voltage pouring out of one of these gems. I hope every single one will ...
by Richard Hull
Mon Nov 21, 2016 7:30 pm
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 151
Views: 12048

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 space with respect to ground can store ...
by prestonbarrows
Sat Nov 19, 2016 5:17 am
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: HVSafety Circuit for comments
Replies: 7
Views: 1501

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 space with respect to ground can store ...
by David Kunkle
Mon Nov 07, 2016 1:49 am
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: HVSafety Circuit for comments
Replies: 7
Views: 1501
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