Search found 19 matches

by Martin Shahi
Wed Sep 18, 2013 7:27 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Voltage multiplier and neon transformer.
Replies: 9
Views: 4878

Voltage multiplier and neon transformer.

Hi guys so I have had a thought and I would just like to know if it would work. So if I had found a neon transformer that puts out 9000V at 60 milliamps, and then used a voltage multiplier circuit like this: http://en.wikipedia.org/wiki/File:Voltage_Multiplier_diagram.PNG Would this provide the nece...
by Martin Shahi
Mon Sep 02, 2013 6:29 am
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Just look out for the voltage rating, you may already know but England and Ireland are 220v, 50 hz, unless you've got some sort of adapter which I'm not sure you can get, 110v rated pumps and equipment will be useless for you. Just did a quick search with 'diffusion pump' and 331003911723 was at th...
by Martin Shahi
Sun Sep 01, 2013 6:23 am
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Martin, There is little brand variation among diffusion pumps, outside of appearance. My advice is to pick something small. You will have to buy oil for the pump, and it is very expensive, so it pays to stay on the small size. Fusor projects almost never benefit from the high speed of a big pump an...
by Martin Shahi
Sat Aug 31, 2013 7:13 pm
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Brands?! What does that have to do with anything? If it is a diffusion pump and the heater works, it's OK. As noted in my FAQ, select an air cooled unit with a 2 to 4 inch throat. Big Belly Bob's diff pump is as good as the finest Varian. They are like just tubes with a heater and a jet stack dropp...
by Martin Shahi
Fri Aug 30, 2013 8:03 am
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

I was speaking to Chris Bradley's failure to clarify. "Guilty" Regarding advice on selecting a good diffusion pump.....No. I have no advice at all... other than that which I gave in the long FAQs I wrote a while back on diffusion pump selection, cleaning and use!!! I read this FAQ but unless I am m...
by Martin Shahi
Thu Aug 29, 2013 8:22 pm
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Richard Hull wrote:Here is where a small use of the quotes or a single, self generated, sentence referencing the quilty plea might have helped. We get either a flood or a drought.

Richard Hull
Like this? Also do you have any advice regarding a good diffusion pump?
by Martin Shahi
Thu Aug 29, 2013 4:55 pm
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Guilty? I'm sorry I don't understand.
by Martin Shahi
Thu Aug 29, 2013 4:41 pm
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Re: Could you help me judge this vacuum pump?

Thank you very much for your advice! I shall ask the seller about the pump's functionality and I will try and negotiate the price down. Any advice regarding good diffusion pumps?
by Martin Shahi
Thu Aug 29, 2013 4:11 pm
Forum: Vacuum Technology (& FAQs)
Topic: Could you help me judge this vacuum pump?
Replies: 19
Views: 6443

Could you help me judge this vacuum pump?

Hi everyone! I have found this vacuum pump here: http://www.ebay.co.uk/itm/ALCATEL-2008A-DUAL-STAGE-ROTARY-VANE-VACUUM-PUMP-1725-RPM-1-2-HP-115-230-/321166414603?pt=BI_Pumps&hash=item4ac702930b and I would very much like to know what you think of it. Refurbished it should have the following specific...