Search found 516 matches: +voltage +safety

Searched query: +voltage +safety

by ian_krase
Sun Sep 10, 2017 9:28 am
Forum: Images du Jour
Topic: Plasma at Last!
Replies: 12
Views: 1570

Re: Plasma at Last!

... ones don't start reading until the beginning of nuclear war tier acute safety hazards and devolve from there. Also, do you have good voltage instrumentation? The flickering of the plasma can come along with very large (order ...
by Richard Hull
Thu Sep 07, 2017 7:56 pm
Forum: Images du Jour
Topic: Plasma at Last!
Replies: 12
Views: 1570

Re: Plasma at Last!

Once you have x-ray voltage, (15kv+), the amount of x-radiation is purely a function of current delivered ... tell you nothing about what you get 5 feet away. If you are worried about personal safety, take measurements only at your obsever station....That will be what you are getting. ...
by Dennis P Brown
Wed Sep 06, 2017 1:26 pm
Forum: Images du Jour
Topic: Plasma at Last!
Replies: 12
Views: 1570

Re: Plasma at Last!

... issue will need to be your first priority before you deal with high voltage power supplies. As for x-rays, in the low 20 kV range isn't too serious ... with real fusor power supplies having one of those is an important safety device. A quick aside: in that one picture with the red wire, I hope ...
by Dennis P Brown
Thu Aug 24, 2017 10:52 am
Forum: Images du Jour
Topic: 2nd demo fusor run
Replies: 2
Views: 512

Re: 2nd demo fusor run

... This may be causing the high pressure in the bell jar. Also, this is a safety issue since glass on metal can create dangerous stress points. Also, you should consider making a better high voltage feed through than a spark plug. Placing a copper rod with a light coating ...
by Geoffrey Thomas
Mon Aug 21, 2017 5:23 pm
Forum: Images du Jour
Topic: Geoffrey Thomas First Plasma
Replies: 1
Views: 434

Geoffrey Thomas First Plasma

... and retainers at both ends, and has 3 bnc coax feedthroughs, a high voltage insulator that I printed out of ABS, a nine pin D-sub connector, ... CO2 laser, but I don't want to use them on this small glass chamber for safety reasons. The pump is a Welch duoseal 1400 that I built from three ...
by ian_krase
Sun Aug 20, 2017 10:40 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Addressing HV safety excursions: Oh Yikes what do I do?
Replies: 11
Views: 1245

Addressing HV safety excursions: Oh Yikes what do I do?

... all grounded together with substantial wire. I also have a "chicken stick" (4 feet long) with a grounded end. Anyway, when I've tried to run up voltage, I've had some scary stuff happen. I've managed to get discharges, but I've also had loud *snap* noises followed by every piece of microprocessor-controlled ...
by ian_krase
Wed Aug 02, 2017 8:30 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Dead Spellman PTV50N200 - where to start?
Replies: 7
Views: 663

Dead Spellman PTV50N200 - where to start?

... switch to the line power and re-routing the high-impedance current and voltage monitor outputs through a pair of op-amps so I could drive a meter. ... system due to lack of an adequate feedthrough and because to ensure safety (and to fit it on my bench) I needed some careful grounding, etc arrangement ...
by Richard Hull
Wed Jul 26, 2017 5:00 am
Forum: Vacuum Technology (& FAQs)
Topic: MKS 901p
Replies: 49
Views: 2599

Re: MKS 901p

... circuit to get only 5 volts into the arduino until the sensor's output voltage drops down below 5 volts. You place a 470 ohm resistor in series ... zener at 5 volts which the Arduino would be happy with, but I like a safety zone afforded by a 4.8 volt zener. If you do not follow this discussion ...
by Duncan Wilkie
Sun Jul 23, 2017 4:30 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: The Beginnings of a Fusor Electrical System
Replies: 59
Views: 6705

Re: The Beginnings of a Fusor Electrical System

... a sort of "black box" that takes an input and steps it up to a higher voltage output. I've been reading Faraday and Maxwell in an attempt to understand ... Maybe the questions I ask, withholding all my assumptions to ensure safety, have lead to the perception of a lack of knowledge. I just want ...
by Rex Allers
Sat Jul 08, 2017 8:45 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Power Supply Completion
Replies: 5
Views: 713

Re: Power Supply Completion

... fine. I assume you will have some kind of big HV divider to measure the voltage output. Just make sure that you don't turn your variac up (if it ... you get the idea to do this? I could see it may be good as kind of a safety series load while trying to figure out the transformer connections ...