Search found 237 matches

by Nanos
Tue Dec 18, 2007 8:26 am
Forum: Vacuum Technology (& FAQs)
Topic: Air or water cooled diffusion pump ?
Replies: 14
Views: 4009

Re: Air or water cooled diffusion pump ?

Air-cooled one arrived today in the post, well packaged and in time for Christmas!
by Nanos
Thu Dec 13, 2007 5:42 pm
Forum: Vacuum Technology (& FAQs)
Topic: Diffusion pump control methods
Replies: 3
Views: 2287

Diffusion pump control methods

From my limited understanding on the subject, is it correct that one uses a variable transformer to control the AC voltage to the heater part of the diffusion pump, to action how much or how little it sucks ?
by Nanos
Tue Dec 11, 2007 6:37 am
Forum: Vacuum Technology (& FAQs)
Topic: I think I just scored!
Replies: 4
Views: 2234

Re: I think I just scored!

Paying by cash and picking up in person is what I recommend.
by Nanos
Tue Dec 11, 2007 6:34 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Building your own electric adjuster thingy..
Replies: 8
Views: 2746

Re: Building your own electric adjuster thingy..

<r>Do variable transformers come in AC and DC formats ?<br/> <br/> Eg. if I wanted one for the diff pump (which has I believe a 450w heating element.) would a 2 amp model be enough such as;<br/> <br/> <URL url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=200181412658"><LINK_TEXT text="h...
by Nanos
Mon Dec 10, 2007 8:15 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Building your own electric adjuster thingy..
Replies: 8
Views: 2746

Building your own electric adjuster thingy..

Whats the correct term that I'm looking for to start with ?

Is it variable transformer, variac, or rheostat ?

And any pointers on how to make your own, as they appear from my very limited understanding, to be difficult to get and very expensive.
by Nanos
Sun Dec 09, 2007 3:45 pm
Forum: Vacuum Technology (& FAQs)
Topic: Air or water cooled diffusion pump ?
Replies: 14
Views: 4009

Re: Air or water cooled diffusion pump ?

Good we wasn't fighting over the same one then :-)

Glad to meet another UK fusorner (I'm assuming from this your in the UK yes ?) I'm based in Southall/West London, how about you ?

Have you thought about how your going to do the water cooling for it ?
by Nanos
Sat Dec 08, 2007 6:59 pm
Forum: Vacuum Technology (& FAQs)
Topic: Air or water cooled diffusion pump ?
Replies: 14
Views: 4009

Re: Air or water cooled diffusion pump ?

<r>I'd rather have paid less, but they don't come up often here in the UK, and with shipping from the US I'd end up paying roughly the same I reckon. (From the few times I've asked someone in the US, just how much would it cost to ship it here, I then have to pick myself up off the floor <E>:-)</E>)...
by Nanos
Sat Dec 08, 2007 1:56 pm
Forum: Vacuum Technology (& FAQs)
Topic: Air or water cooled diffusion pump ?
Replies: 14
Views: 4009

Re: Air or water cooled diffusion pump ?

<t>We eventually agreed to £315 including postage, now to wait a couple of weeks for it to arrive, hopefully before Christmas, and I did ask for him to overdose on the packing so it hopefully arrives in one piece.<br/> <br/> Then I'll have to ask, what oil would be suitable for it, and where I might...
by Nanos
Sat Dec 08, 2007 11:23 am
Forum: Vacuum Technology (& FAQs)
Topic: Air or water cooled diffusion pump ?
Replies: 14
Views: 4009

Re: Air or water cooled diffusion pump ?

He came down to £325+postage, I've offered £300 including postage. (That maybe a little high for such a pump, its at the limit of my current budget, and air cooled ones don't come up very often, think of it as an investment for life..)