Search found 1214 matches

by John Futter
Mon Dec 04, 2017 6:43 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Diffstak disassembly and cleaning?
Replies: 6
Views: 216

Re: Edwards Diffstak disassembly and cleaning?

Rob
Please try to post all your relevant info to this site and do not link other sites for content as when it inevetibly happens the external site stops for whatever reason this thread becomes worthless
by John Futter
Mon Dec 04, 2017 6:40 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Pressure controller (Edwards) or cheaper pressure controller
Replies: 4
Views: 171

Re: Vacuum Pressure controller (Edwards) or cheaper pressure controller

Steven
Please place photos inline on this site
when you link external image stores when they cease this thread loses all its relevance
for photos 1024 x 768 pixels is perfect use something like irfanview to resize resample your photos to minimise file space on the srver
by John Futter
Fri Dec 01, 2017 2:54 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: X-Ray Transformer Issue
Replies: 6
Views: 198

Re: X-Ray Transformer Issue

Sam
You have some shorted turns
which in a transformer is a big no no as it kills the inductance hence the current goes up dramatically
you now have an expensive paper weight unless you can unwind / cut off the faulty winding
by John Futter
Tue Nov 14, 2017 5:49 pm
Forum: Vacuum Technology (& FAQs)
Topic: Will a Sprengel Pump Work?
Replies: 19
Views: 490

Re: Will a Sprengel Pump Work?

Yes it would work albeit very slowly
The drop tube would have to be very high nearly 30 feet due to the lower density of the fluid
also the viscosity of the oil is going to make it 10 -100 times slower than the mercury version
by John Futter
Mon Nov 13, 2017 9:05 am
Forum: Images du Jour
Topic: I think I have a fusor chamber.
Replies: 14
Views: 492

Re: I think I have a fusor chamber.

Diff pumps are a semi closed loop feedback system DC 704 will run at one temp with a standard heater DC705 at another temp albeit higher If you use Santovac it will be an even higher temp. The diff pump is a self regulating system using the cooling in the upper parts and the super heated fluid in th...
by John Futter
Sat Nov 11, 2017 6:54 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Anode 'Volume' Effect
Replies: 1
Views: 114

Re: Fusor Anode 'Volume' Effect

Dennis
By Mess I think you mean Mesh
by John Futter
Thu Nov 09, 2017 6:09 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Quark "fusion"
Replies: 6
Views: 235

Re: Quark "fusion"

this nature article is just putting anopther spin on it
by John Futter
Thu Nov 02, 2017 6:38 am
Forum: New User Chat Area
Topic: Min Size of Diff Pump
Replies: 10
Views: 363

Re: Min Size of Diff Pump

By golly this pump must be about forty years old can you get a spare heater for it??? are all the internal parts in place with none lost??? Is it jam packed with carbonised muck deep down inside does it leak ( I have seen two diff pumps now with a leaky weld at the bottom) these are all questions th...
by John Futter
Thu Oct 19, 2017 9:42 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: RF enhanced ion source
Replies: 5
Views: 2849

Re: RF enhanced ion source

Ian This is an inductively coupled plasma (ICP) there are specific bands (ISM)reserved for this type of equipment 11- 26 MHz for HF 433 915Mhz for VHF UHF 2440 etc for microwave upshot is yes they radiate alittle but they only interfere with other ISM equipment Thomas has done an excellent job most ...
by John Futter
Thu Oct 19, 2017 9:34 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Input source for HV multiplier
Replies: 7
Views: 350

Re: Input source for HV multiplier

Finn
You beat me to it