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Re: Greetings!

... 20 - 25 kV range with good detector systems.) Until you can handle high voltages, consider experimenting at far lower voltages but in no case, exceed ... voltage. You need to really understand high voltage systems and related safety - issues such as proper (fail safe) chamber grounding, properly ...
by Dennis P Brown
Fri Jun 23, 2017 5:49 pm
 
Forum: Please Introduce Yourself
Topic: Greetings!
Replies: 10
Views: 245

Re: Precipitator power supplies?

... Of course, the diode as you may or may not know is seeing a higher peak voltage than the max rated voltage for the supply (for any AC powered device) so these diodes must be rated for the higher voltage with some safety factor. As for grounding, that is an issue but that depends on the supply ...
by Dennis P Brown
Wed Jun 07, 2017 12:41 pm
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Precipitator power supplies?
Replies: 13
Views: 280

Re: Linear IEC Device

... this would be, but I like it! incidentally, capacitors will surely have safety factor so you don't actually know the voltage cap. Try an oil burner ignition transformer. They are basically like an NST. While ...
by ian_krase
Tue May 23, 2017 5:56 am
 
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Linear IEC Device
Replies: 11
Views: 614

Re: How would you go about stepping up dc power supply volta

... not clear in your post that the ebay power supplies were adjustable in voltage - that does change things. That said, a 10 kV DC output supply can't ... remember, when you open the supply in that manner you are on your own - safety is a very important issue and when the system is at a higher voltage ...
by Dennis P Brown
Tue Apr 18, 2017 10:56 am
 
Forum: New User Chat Area
Topic: How would you go about stepping up dc power supply voltage?
Replies: 17
Views: 883

Re: How would you go about stepping up dc power supply volta

... think you are completely off base with the idea of upping the output voltage from a supply. I also think your observation of 600W or more of output ... be attempted by anyone who lacks good engineering skills or HV safety concepts. So -- maybe. But not easily if at all.
by Rex Allers
Tue Apr 18, 2017 2:40 am
 
Forum: New User Chat Area
Topic: How would you go about stepping up dc power supply voltage?
Replies: 17
Views: 883

Re: The Beginnings of a Fusor Electrical System

... can be much greater than the normal continuous current.) Of course, the voltage limit of the diode should be around twice the fusor max voltage (remember ... occurs quickly and then makes these voltages deadly. Follow HV safety procedures (i.e. one rule is: always assume any source is hot and ...
by Dennis P Brown
Thu Mar 30, 2017 11:04 am
 
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: The Beginnings of a Fusor Electrical System
Replies: 38
Views: 3186

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

I have stressed electrical safety but one needs to be aware that over 35 kV fusor operation x-rays start to be ... GM tube would be an ideal and very low cost approach - just remember to lower the voltage on the Ludlum unit for GM tube operation. So besides electrical safety, radiation ...
by Dennis P Brown
Mon Mar 20, 2017 9:20 am
 
Forum: Images du Jour
Topic: John Beutz Fusor... The Story so Far
Replies: 24
Views: 1780

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

... - I know this only too well. My main concern is and remains the high voltage x-former. You need to devote a lot of time both reading up on these ... 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
Sun Mar 19, 2017 6:10 pm
 
Forum: Images du Jour
Topic: John Beutz Fusor... The Story so Far
Replies: 24
Views: 1780

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

... area that can cause issues for pro's. If that x-former can reach such voltages you are in an area of voltage technology few venture and those that ... 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 ...
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: 1780

Re: Mech Pump and Transformer Questions

... BF3 tube from the Ukraine - I got one and it worked fine but my working voltage was too high for my Ludlum so I built my own power system. However, ... 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 Dennis P Brown
Sat Mar 18, 2017 3:22 pm
 
Forum: New User Chat Area
Topic: Mech Pump and Transformer Questions
Replies: 20
Views: 1007
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