Search found 459 matches: +voltage +safety

Searched query: +voltage +safety

by Jim Kovalchick
Wed Dec 12, 2018 11:46 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Creation, usage, and destruction of a cathode
Replies: 12
Views: 4367

Re: Creation, usage, and destruction of a cathode

... like you want to keep yourself safe. I would like to offer an important safety tip to keep you and others out of trouble. I noticed that you used ... to pop off when you least expect it. If it does when you are applying voltage with your power supply then the chamber becomes dangerous. You should ...
by Richard Hull
Tue Oct 30, 2018 9:09 pm
Forum: FAQs: High Voltage
Topic: #5 FAQ - Grounding in a fusor system
Replies: 9
Views: 7363

Re: #5 FAQ - Grounding in a fusor system

... star ground is a great idea. However, many power supplies of very high voltage have one pole of the output voltage case grounded as a safety measure. This forces you to do some internal wiring reworking to link the current system ...
by Dennis P Brown
Mon Oct 15, 2018 2:23 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Jan Ruge Fusion Attempt @ Chaos Darmstadt
Replies: 13
Views: 5599

Re: Jan Ruge Fusion Attempt @ Chaos Darmstadt

... target using reverse biasing (this can be a challenge with your high voltage target - that is why I "grounded" my target relative to the gun so ... bias my target. Your method is certainly better suited for high voltage safety as long as your vacuum housing near the HV input is well grounded. ...
by Rich Feldman
Sun Sep 23, 2018 10:51 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Operating three phase high voltage power supply on single phase power
Replies: 10
Views: 6820

Re: Operating three phase high voltage power supply on single phase power

... thing: no overcurrent protection device may interrupt the connection between the boost secondary winding and the hots side of primary winding. The safety reason is obvious on inspection of a schematic, IIRC. Beware of free advice from the Internet. Hey, how about doing what amateur machinists have ...
by Dan Knapp
Sun Sep 23, 2018 7:00 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Operating three phase high voltage power supply on single phase power
Replies: 10
Views: 6820

Operating three phase high voltage power supply on single phase power

... to time, a bargain appears on eBay in the form of a high power high voltage power supply that uses three phase power input. Since most fusor ... consume wasted power turning the idler motor, are noisy, and present a safety hazard with the turning shaft (sealed idlers with no shaft are available, ...
by Dennis P Brown
Tue Sep 11, 2018 10:45 am
Forum: Images du Jour
Topic: My first plasma
Replies: 13
Views: 5423

Re: My first plasma

... of a real fusion power supply for very long. Of course, always wear safety glasses and and ALWAYS surround any glass vacuum chamber that is under ... have a "ball" end piece on any wire end to prevent a focused high voltage point from developing just as it did in your system. I do, in fact, ...
by John Myers
Thu Jul 05, 2018 9:53 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: WA6-30N High Voltage Enable
Replies: 2
Views: 2606

Re: WA6-30N High Voltage Enable

Are you you enabling (shorting) the safety interlock before plugging in the AC power?

Section 3-1 in the manual shows the steps you need to follow.
Section 4-4 states that if the interlock is opened the output is cut off until the AC power is removed and turned on again.
by Dennis P Brown
Tue Jun 26, 2018 7:58 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Couple of questions
Replies: 39
Views: 14068

Re: Couple of questions

... at any home depot. These materials can stop the x-rays that a high voltage system can generate (when operating over 20 kV.) One must calculate ... will have. Agree with Ian that good ground system is critical for safety as well as using proper high voltage cable (i.e. correct voltage rating)! ...
by Dan Knapp
Fri Jun 22, 2018 12:38 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Ballast resistor construction
Replies: 11
Views: 5210

Re: Ballast resistor construction

... the system into a runaway condition if I’m not fast enough backing off voltage. I don’t have an analog control knob for voltage (the supply only ... hard to keep it stable. I’m keeping the resistors inside the tube for safety and hoping convection will keep the ozone cleared, but I may need ...
by Rex Allers
Fri Jun 22, 2018 1:21 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Ballast resistor construction
Replies: 11
Views: 5210

Re: Ballast resistor construction

... points (pun intended). My experience: I was testing a 50 KV supply for voltage and current. I have a load I made from a bunch of power resistors ... arcing point so it happened to have some limiting too. Just a note on safety, my load resistor and a HV divider for measuring voltage were well ...