Search found 23 matches

by Aidan Cookson
Thu Mar 27, 2014 1:18 am
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Gauge and Controller help
Replies: 1
Views: 1033

Re: Vacuum Gauge and Controller help

I figured it out. The ebay post claimed it was a 403 but i just realized it was a 103.
by Aidan Cookson
Wed Mar 26, 2014 10:00 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Gauge and Controller help
Replies: 1
Views: 1033

Vacuum Gauge and Controller help

Hi, I recently bought an Inficon MPG401 Pirani/Cold Cathode gauge and an Inficon VGC403 Controller for it off of ebay. The seller said they both work, however, when I plug in the sensor, the controller says "NO Sens". Do I need to activate the sensor somehow or press another button? I have read thro...
by Aidan Cookson
Wed Jan 01, 2014 6:47 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Sealant
Replies: 6
Views: 2248

Re: Vacuum Sealant

Ok, sorry, I don't post on forums of any kind much. And I'll just get an angle, I don't feel like taking that chance with the gauge.
by Aidan Cookson
Wed Jan 01, 2014 4:31 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Sealant
Replies: 6
Views: 2248

Re: Vacuum Sealant

Vacuum sealant is not to be used on a metal chamber. Sealant is not a glue. I assume you mean a vacuum rated epoxy. There is no substitute for welding or silver soldering the various flanges and such on a fusor. TIG welding is the preferred method used on standard 304 stainless steel. It is always ...
by Aidan Cookson
Tue Dec 31, 2013 6:16 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Sealant
Replies: 6
Views: 2248

Vacuum Sealant

Would using vacuum sealant be a viable alternative to welding the flanges and half nipples onto the hemispheres? Also, is it a good idea to have an angled tube between the turbo pump/vacuum gauge and the chamber to reduce contamination? Thanks
by Aidan Cookson
Thu Dec 05, 2013 12:44 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Measuring Voltage on a Computer
Replies: 6
Views: 2990

Re: Measuring Voltage on a Computer

AllenWallace wrote:I recommend a $29 USB DATAQ device. You get 10 bit resolution from -10 to +10 volts with a Visual Basic interface.
see http://www.dataq.com/products/startkit/di145.html
For the high school students out here, they give them away free...
Thanks, i'll check that out too.
by Aidan Cookson
Sun Dec 01, 2013 3:52 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Measuring Voltage on a Computer
Replies: 6
Views: 2990

Re: Measuring Voltage on a Computer

Ok thanks, I'll look into those. Do you know the maximum voltage I can input into the Teensy 3.0 board? Im trying to figure out what scale it needs to be.
by Aidan Cookson
Sun Dec 01, 2013 4:32 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Measuring Voltage on a Computer
Replies: 6
Views: 2990

Measuring Voltage on a Computer

I was wondering if anyone has any tips on measuring continuous voltage and or current through a computer to collect and graph? For the time being, I am planning on going up to 40 Kv at 10mA. I was thinking of using a standard 1:10000 voltage divider then hooking it up to a multimeter(set to 40 DC V ...
by Aidan Cookson
Wed Oct 30, 2013 1:16 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Chamber
Replies: 10
Views: 3326

Re: Vacuum Chamber

If it gets close to May and you do not have enough parts and you do not have the money, then do a demo fusor. Its a look alike and you will learn a lot about what sort of plasma is created at different applied voltages and chamber pressure. A neutron producing fusor is not something you should rush...
by Aidan Cookson
Tue Oct 29, 2013 10:50 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Chamber
Replies: 10
Views: 3326

Re: Vacuum Chamber

In my opinion if you have the money and want to put in the effort to scrounge for parts, I see no reason why you cant't build a bigger fusor now. In the end, it will ultimately save you money. Are you doing the project for school? Is that why its due May? I suppose you could build a fusor in 6 mont...