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by Rex Allers
Mon Nov 14, 2016 11:22 pm
Forum: Vacuum Technology (& FAQs)
Topic: Solid state hydrogen storage experiments
Replies: 20
Views: 13000

Re: Solid state hydrogen storage experiments

Glad Rich is getting into this too. I think it was Corby that brought up the idea of using these about a year ago. I've been planing to write up details of what I've done so far, but haven't got to that yet. Since Rich seems to be ready to make his own adapter fitting, I thought I'd share a few quic...
by Rex Allers
Sat Nov 12, 2016 10:01 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Russian Corona Tube - resistance
Replies: 9
Views: 4493

Re: Russian Corona Tube - resistance

I've got three Russian tubes here: CHMO-5, CHM 65, and CHM 32. I haven't tried to use any of them yet, but I just measured them with an ohm meter and they all show completely open. That's what I expected. Don't know what could be up with yours but it doesn't sound good.
by Rex Allers
Sat Nov 12, 2016 9:48 pm
Forum: Vacuum Technology (& FAQs)
Topic: Any Swagelok Gurus out there?
Replies: 21
Views: 13354

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: 8712

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: 13354

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: 13354

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: 3119

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: 8041

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: 8041

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: 5174

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...

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