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Christmas Comes Early!

Posted: Thu Jun 08, 2017 6:40 pm
by Garrett Young
(Note: I have no affiliation with the seller and can't guarantee the functionality of the listed item but I purchased one and will update the thread with my findings)

Spellman PTV50N200 (related thread: viewtopic.php?f=11&t=4852)

-50kV 4mA 200W (can be boosted to 7 mA/350W using the schematics in the linked thread)

http://www.ebay.com/itm/Spellman-50kv-H ... 2706614602

$125! (now $150)

Re: Christmas Comes Early!

Posted: Thu Jun 08, 2017 7:59 pm
by ian_krase
Oh wow.

Is that enough current though?

(Who cares, I'm not doing fusion for the *fusion*)

Re: Christmas Comes Early!

Posted: Thu Jun 08, 2017 8:06 pm
by Garrett Young
In my device, 50kV and 7mA would produce very easily detectable fusion.

Re: Christmas Comes Early!

Posted: Thu Jun 08, 2017 10:13 pm
by Garrett Young
Here are the changes that I identified to convert to the 350W version:

C15 0.047/50V

C39 0.022/50V
R50 4.7k 5%

JB5 IN (Used for Fan 24VDC)

R26 20k, 22T (?, table slightly unclear)

Re: Christmas Comes Early!

Posted: Thu Jun 08, 2017 10:24 pm
by Dennis P Brown
But your chamber operates at 33 milli-torr which is rather high compared to standard fusors (5 milli-torr); having a small 4-way "T" as a chamber is an apparent advantage and might be the best approach. So using 50 kV and 7 ma on a normal sized chamber might not work. I like your approach better but if someone wants to use a 350 watt PS might it might be best for them to follow your complete design.

Re: Christmas Comes Early!

Posted: Fri Jun 09, 2017 3:21 am
by ian_krase
Interesting.

I wonder if I can make an accelerator.

Re: Christmas Comes Early!

Posted: Fri Jun 09, 2017 6:35 am
by Sarvesh Sadana
Would it not be possible to purchase two power supplies and run them in parallel, giving you 50 kv at 14 ma?

Re: Christmas Comes Early!

Posted: Fri Jun 09, 2017 9:46 am
by John Futter
Sarvesh
This usually ends up with two lots of smoking ppwer supply remains

Re: Christmas Comes Early!

Posted: Fri Jun 09, 2017 4:40 pm
by Richard Hull
John is right, paralleling power sources to get more current tends to work better with batteries and even they need load leveling sharing resistors that waste power.

Richard Hull

Re: Christmas Comes Early!

Posted: Fri Jun 09, 2017 7:13 pm
by John Futter
Actually i'm not quite right with the paralleling of supplies
some supplies have the capability to slave to a master supply so that there is only one control loop operating.
If you have access to the internal control loops and know what you are doing it is possible but I would say this is out of reach to most people here