Search found 330 matches

by ian_krase
Fri Nov 17, 2017 7:07 am
Forum: Vacuum Technology (& FAQs)
Topic: An interface to the MKS 901P transducer
Replies: 10
Views: 420

Re: An interface to the MKS 901P transducer

PM sent. I'm interested.
by ian_krase
Fri Nov 17, 2017 5:13 am
Forum: Please Introduce Yourself
Topic: Hello from a seeker of fusor power generation
Replies: 3
Views: 109

Re: Hello from a seeker of fusor power generation

He might have just meant "input versus output"... by which definition a car engine is over-unity. Still is clearly crackpot territory. There is no word on how that tiny little can is shielded against the blistering X-rays that would surely be produced. Description of the fuels used by various proces...
by ian_krase
Fri Nov 17, 2017 5:00 am
Forum: New User Chat Area
Topic: Spellman Control Pinout
Replies: 1
Views: 61

Re: Spellman Control Pinout

Cliff Scapellati, a major executive in Spellman, sometimes frequents these forums and may be willing to help you.
by ian_krase
Thu Nov 16, 2017 7:09 am
Forum: Vacuum Technology (& FAQs)
Topic: An interface to the MKS 901P transducer
Replies: 10
Views: 420

Re: An interface to the MKS 901P transducer

Any chance of a PCB group buy?
by ian_krase
Wed Nov 15, 2017 6:05 am
Forum: Vacuum Technology (& FAQs)
Topic: Unfortunate Diffusion Pump Sign
Replies: 5
Views: 126

Re: Unfortunate Diffusion Pump Sign

I suspect that what will determine that is: 1. How much oil is needed -- since all diffpump oil is very expensive and eventually you reach the point where the small bottle you might already have isn't even one charge 2. How much power -- and what voltage -- is needed. If it can't run on whatever vol...
by ian_krase
Wed Nov 15, 2017 5:52 am
Forum: The Trading Post
Topic: Muffle / Burnout furnace for sale
Replies: 3
Views: 334

Re: Muffle / Burnout furnace for sale

I can see about crating it for long distance shipment but you'll be paying for that, and probably there are better options where you are.
by ian_krase
Sun Nov 12, 2017 5:27 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: What do you need to do to run a vacuum system unattended
Replies: 6
Views: 197

Re: What do you need to do to run a vacuum system unattended

Hmmm. My rotary vane pump has an anti-suckback valve but it leaks -- it holds long enough for a conscious human to close the foreline valve but over hours will allow bulk oil suckback -- *not* good. I see that there are some specialized angle valves meant for this purpose -- for some reason usually ...
by ian_krase
Sun Nov 12, 2017 5:17 am
Forum: Images du Jour
Topic: I think I have a fusor chamber.
Replies: 14
Views: 366

Re: I think I have a fusor chamber.

Is a KF40 or KF50 angle valve really that difficult to control at the low end?
by ian_krase
Sat Nov 11, 2017 6:43 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: What do you need to do to run a vacuum system unattended
Replies: 6
Views: 197

What do you need to do to run a vacuum system unattended

What do you consider the minimum requirements to run a vacuum system unattended? The most obvious problem is that a power failure will kill the forepump, and then one is in a race between the cooling or slowing of the high vacuum pump and the rise in pressure, both in the foreline and in the chamber...
by ian_krase
Sat Nov 11, 2017 9:22 am
Forum: Images du Jour
Topic: I think I have a fusor chamber.
Replies: 14
Views: 366

Re: I think I have a fusor chamber.

I would probably try to use a KF50 for a viewport for maximum visibility, if it were my project. Subject to viewport availability and cost of course. Also you never know what feedthroughs, etc you will find. An ion gun (usually? often?) will have its gas inlet *in the gun*. How do you plan to combin...