Search found 9 matches

by William Kelly
Tue Nov 22, 2016 12:30 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Internal Grid
Replies: 1
Views: 1690

Internal Grid

Hello! I have recently bought a titanium spherical vacuum chamber. I first would like to know what the optimal material for an internal grid is. Also, I was wondering if anyone was willing to make/sell me one with or without an MDC feedthrough. Thanks as always! -William P.S. If this is in the wrong...
by William Kelly
Sun Nov 20, 2016 7:05 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

Has there been any developments on the CA11 cable issue yet?
- William
by William Kelly
Sat Nov 19, 2016 2:51 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

Some more notes on the operation of these supplies: 1) The connector is only rated to full voltage when mated, it will likely flash over if you run the supply up to 70kV for testing without a connector installed. Up to 10kV is fine without a connector for sure. The matlab code that I uploaded shoul...
by William Kelly
Sat Nov 19, 2016 2:41 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

For the DXM power supplies there is no point in having a cable with more than two conductors since the pins are internally connected as pairs, i.e. C and S are connected internally and L and G are connected internally. Some of William's comments suggest a level of unfamiliarity such as to constitut...
by William Kelly
Fri Nov 18, 2016 11:17 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

Keep in mind that fusion rate increases exponentially with voltage, if you have a 70kV supply, I'd recommend running 70kV. Any reason why you want 12ft of HV cable? The supply can be remotely controlled, you can mount it close to your fusor and control it at a distance. I believe you can order cabl...
by William Kelly
Fri Nov 18, 2016 8:05 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

Re. cables with CA11 connector: A group purchase can overcome hurdles like minimum order value, or institutional-byuer requirement. But there are important product variables other than length. Experienced users like Andrew might have good suggestions there. How many inner conductors do you want? I ...
by William Kelly
Fri Nov 18, 2016 2:32 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

We can make them, William. What kind of HV insulated cable will you use? Which of the four terminals in the negative HV connector well do you want to connect to? So far I've been unable to find a dimensioned drawing of any CA11 connector, so I will measure & report when my PS arrives. I will want t...
by William Kelly
Tue Nov 15, 2016 10:52 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

In a previous post, Andrew said they used a Claymount CA11 mini connector. See http://www.fusor.net/board/viewtopic.php?f=6&t=10294&p=70621&hilit=DXM70N600X3547#p70621 Does anyone know a way of acquiring one of these CA11 Mini Connectors? I reached out to the company and the eBay seller, unfortunat...
by William Kelly
Tue Nov 15, 2016 12:34 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman DXM70N600X3547 power supplies on ebay -70kV 8.56MA
Replies: 157
Views: 66539

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

Update: I just purchased the last one, also for $200. Thanks for letting us know about this! What a snag!
- William