Search found 321 matches

by Rex Allers
Sat Mar 14, 2020 10:50 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2964

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

Great stuff Andrew. Thanks for taking it all the way to fusion and sharing the results.

Good info (with resources not available to many) on what is inside too.
You said, "one of the used metal hydride cartidges that would no longer take a charge."

Any idea why it wouldn't take a charge?
by Rex Allers
Tue Mar 10, 2020 9:07 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Thought Experiment Regarding Breakeven
Replies: 11
Views: 1369

Re: Thought Experiment Regarding Breakeven

Simey I'm going to break the flow for a second. Looks like you joined the forum back in 2012 but never posted until now. Is that right? I guess you are grandfathered in but rules for the forum changed in last few years requiring real names. I used to be rexa but changed to full name after the forum ...
by Rex Allers
Tue Mar 03, 2020 7:08 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 102
Views: 33146

Re: Vacuum Chamber Construction

Re: " its leaking a decent amount of oil from the black tube out its back" That sounds unusual to me. Not sure what to make of the black tube or this leak of oil. Not something I would expect from a normal working pump. Key, I guess, is what vacuum you get at the input of the mechanical pump. Second...
by Rex Allers
Tue Mar 03, 2020 5:06 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 102
Views: 33146

Re: Vacuum Chamber Construction

from Nickolas: "All that being said, I think I'm going to take your advice Rich and test the backing pump with my vacuum gauge first" Yes indeed. One step at a time when possible and that is a basic good one. What kind of gauge have you? If your gauge is good and on the pump input that sets the best...
by Rex Allers
Sun Mar 01, 2020 9:47 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: A semi-DIY preamplifier for radiation detectors
Replies: 28
Views: 15460

Re: A semi-DIY preamplifier for radiation detectors

Good stuff, Rich.

What is your alpha source? Is it from one of those big old smoke detectors?
If so, I've heard bad stuff about them shedding radioactive material. I'm sure you are careful but it'd be good to monitor your work area.
by Rex Allers
Sun Mar 01, 2020 9:31 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2964

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

Yikes! Really? I haven't been looking at prices in quite a while. The Hydrofill I bought in 2015 was about $330 which I thought was pretty steep. So about 3X in 5 years I gather. Still could be a good deal if a person with a filler would share D2 filled cartridges. I'd think around $100 per might be...
by Rex Allers
Sun Mar 01, 2020 2:05 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2964

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

Good to see someone looking into this D2 generation, storage, and use idea. There was some discussion about this on the forum several years back. Links to older threads: Solid state hydrogen storage experiments Nov 14, 2016 http://www.fusor.net/board/viewtopic.php?f=10&t=11147 Deuterium storage Dec ...
by Rex Allers
Fri Jan 24, 2020 7:54 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Precipitator HV Supply Hacking
Replies: 24
Views: 7462

Re: Precipitator HV Supply Hacking

Oops, I see you used IRS... vs original IR... Good to know that worked. As I said, I found a few chips that seemed they might work. I'd have to go look at the datasheets again to remember what the differences were. I'm no power supply design engineer but the function of these supplies seems unusual ...
by Rex Allers
Fri Jan 24, 2020 7:16 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Precipitator HV Supply Hacking
Replies: 24
Views: 7462

Re: Precipitator HV Supply Hacking

Alan, Thanks for the good words on my shared results from hacking these supplies. The two mystery chips (markings sanded off) were only mysteries for a while after the hacking began. In one of my zips for the 60 KV unit there is a file with this: ------ Two chips used on the 60 kV supply 1) 8-pin dr...
by Rex Allers
Sun Jan 19, 2020 5:18 pm
Forum: Announcements and Site Administration Topics
Topic: No Intranets and no songs??
Replies: 6
Views: 976

Re: No Intranets and no songs??

Sigh. Not sure how you arrived at those working links, Frank. The top-level pages of fusor.net have different links in the only way I found (as described earlier). Frank's working links: https://www.fusor.net/old-boards/intranets.com/index.html https://www.fusor.net/old-boards/songs.com/index.html -...