Search found 327 matches

by Rex Allers
Sat Nov 12, 2016 9:48 pm
Forum: Vacuum Technology (& FAQs)
Topic: Any Swagelok Gurus out there?
Replies: 21
Views: 12073

Re: Any Swagelok Gurus out there?

Just a quick FYI on pressures with these small H2 cartridges... In testing my home-made valve this last week I made some basic measurements. I connected my adapter / valve pretty directly to a dial pressure gauge that goes up to 600 psi. One hydrocore (the Brunton version) that I had been using and ...
by Rex Allers
Fri Nov 11, 2016 12:59 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Primer Field Bowl Magnets?
Replies: 9
Views: 8044

Re: Primer Field Bowl Magnets?

Username: You can change the username associated with your account and not break anything. I first joined several years back, before your real full name was a requirement. I was originally 'rexa'. I was worried that changing my username would create a new account or break links to my earlier posts. ...
by Rex Allers
Sat Nov 05, 2016 3:08 am
Forum: Vacuum Technology (& FAQs)
Topic: Any Swagelok Gurus out there?
Replies: 21
Views: 12073

Re: Any Swagelok Gurus out there?

Corby, In my earlier post I asked you a question. Hoping you can answer. You said you bought one of the fittings from Hydrostik output to 1/8 tube. I've seen pictures of them but nothing that gave a look what's inside where it screws onto the Hydrostik. Here's my earlier question... "So question for...
by Rex Allers
Wed Nov 02, 2016 9:29 am
Forum: Vacuum Technology (& FAQs)
Topic: Any Swagelok Gurus out there?
Replies: 21
Views: 12073

Re: Any Swagelok Gurus out there?

Corby, I don't have anything to offer on the Swagelok questions, but I was involved in the discussion some months back, after your idea of using the Hydrostiks. I did some work on my own set-up but got distracted (again) before I got very far along. I bought one Hydrostik and a 4-pack of HydroCores ...
by Rex Allers
Sun Oct 09, 2016 8:25 am
Forum: Images du Jour
Topic: High Voltage Multiplier (VM) with x-former System
Replies: 3
Views: 2826

Re: High Voltage Multiplier (VM) with x-former System

Rich, I agree in principle with your general premise, but I must argue many of the details. I've always understood the lower boundary for microwaves to be at 1 GHz (1000 MHz) and 300 MHz is far below that. The wire-wound ferrite transformer you showed might work into high hundreds of MHz but near or...
by Rex Allers
Sat Sep 24, 2016 3:48 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Problem with oscilliscope
Replies: 11
Views: 7292

Re: Problem with oscilliscope

I agree with everything Richard said. Hard to cover important stuff in a few words, but I'll try. I think the gold standard for analog scopes was Tektronics. I think all of them used CRT's as the display. One problem is that it will be hard to find a CRT analog scope with a CRT that has much or any ...
by Rex Allers
Wed Sep 21, 2016 10:20 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Problem with oscilliscope
Replies: 11
Views: 7292

Re: Problem with oscilliscope

Searching ebay for PM3200 and closed listings, I found this picture, maybe the one you bought. PM3200.jpg Sorry to be the bearer of bad news, but that's a pretty crappy scope even if it works perfectly. Only one channel, and only 10 MHz bandwidth. I think most people would recommend a useful scope s...
by Rex Allers
Thu Aug 18, 2016 12:09 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Lithium Fluoride detectors?
Replies: 7
Views: 4723

Re: Lithium Fluoride detectors?

Jonathan (ertic), You seem to be a brand new member. You didn't use your full name as forum rules require. On the link you gave, Firefox won't let me connect. Says the security is invalid for the connection and could be dangerous. Not sure if there is anything bad there but I'm not going to risk try...
by Rex Allers
Thu Aug 18, 2016 12:00 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Lithium Fluoride detectors?
Replies: 7
Views: 4723

Re: Lithium Fluoride detectors?

Frank, That pdf link didn't work for me. I browsed down from the top level and found this: NeutronRAE II http://www.raesystems.com/products/neutronrae-ii (there's a data sheet link on that page, but different file name) Is that the same device you have? Datasheet says the neutron detector is a LiI(E...
by Rex Allers
Wed Aug 10, 2016 6:40 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electron gun- what's wrong here?
Replies: 54
Views: 40066

Re: Electron gun- what's wrong here?

Did it again. Typed for about half an hour but didn't save locally and it went poof when I submitted. Maybe I wasn't really logged in? Shorter version... Good to know you got some output results that look good. I checked numbers on the module here and it is CXA-L10A. Same as you and Steven. Found ba...