Search found 273 matches

by Rex Allers
Thu Feb 14, 2019 11:25 am
Forum: New User Chat Area
Topic: Some noob high voltage divider questions
Replies: 4
Views: 188

Re: Some noob high voltage divider questions

Thomas, You are on the right track but here's my input. The meter input impedance you mentioned is a big factor. The 10 100M resistors you want to use sound like they should to be up to the task but if you really want to measure up around 100 KV, the layout and connections will be important. Some ki...
by Rex Allers
Sat Feb 02, 2019 7:59 am
Forum: The Trading Post
Topic: What kind of connector is this?
Replies: 6
Views: 614

Re: What kind of connector is this?

If you don't have a reason to mate with that particular connector, most of us hackers would, at minimum open it up, look for color codes, etc. Do you already know what the pin functions are? You didn't tell us what's on the other end. That's the part you most need to figure out. After that, you can ...
by Rex Allers
Thu Jan 31, 2019 1:22 pm
Forum: Announcements and Site Administration Topics
Topic: Straw Poll / Proposal for San Francisco Area mini-meetup
Replies: 32
Views: 2625

Re: Straw Poll / Proposal for San Francisco Area mini-meetup

Joe Gayo, Rich Feldman and I did get together for dinner Wed. evening. Hmm, we probably should have taken a pic, but didn't. It was great to see each other and chat. A small meeting, Richard, but at least some connection on the west coast at last. I was very impressed with things Joe had to share. N...
by Rex Allers
Thu Jan 31, 2019 8:38 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Fusor Master's Thesis
Replies: 6
Views: 729

Re: Fusor Master's Thesis

Slight warning for those downloading the pure.tue.nl pdf, it's 38MB in size. Joe, great to meet you this evening. Hope you continue to stimulate us with well thought out concepts and testing. Per my mention of difficulties finding stuff with search engines these days, I looked for "Charge Exchange M...
by Rex Allers
Mon Jan 28, 2019 3:09 am
Forum: Announcements and Site Administration Topics
Topic: Straw Poll / Proposal for San Francisco Area mini-meetup
Replies: 32
Views: 2625

Re: Straw Poll / Proposal for San Francisco Area mini-meetup

Not a big success, but Joe, Rich and I are still planning to meet at Pedro's Wed evening. Joe is normally in So Cal, so this is a good reason to continue with this one. Anyone else is still welcome to join.

Hopefully, more SF Bay area folks can get together at some future time.
by Rex Allers
Sat Jan 26, 2019 11:39 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: 50kV Supply
Replies: 24
Views: 1735

Re: 50kV Supply

The ebay seller is 'bdmerchandise'. I exchanged some emails with him and he seems pretty helpful if not completely aware of details on all these parts. I got my unit today (the same aluminum box that Joe told us about). As I suspected, and posted earlier in this thread, it looks to be Glassman parts...
by Rex Allers
Thu Jan 24, 2019 3:35 am
Forum: The Trading Post
Topic: Looking for: Controller Panel for Spellman-Bertan PMT power supply
Replies: 24
Views: 1561

Re: Looking for: Controller Panel for Spellman-Bertan PMT power supply

"I hope someone explains the connections to ..." That ("50kV Supply") is not a Spellman unit, it's a custom version of a Glassman supply based on the ER-Series. I was going to provide a link to Glassman for basic info but seems they are now part of www.xppower.com and I don't see the ER supply liste...
by Rex Allers
Thu Jan 24, 2019 2:55 am
Forum: Announcements and Site Administration Topics
Topic: Straw Poll / Proposal for San Francisco Area mini-meetup
Replies: 32
Views: 2625

Re: Straw Poll / Proposal for San Francisco Area mini-meetup

Maybe some of us can make Wed 1/30 at 5 or 6 PM at Pedro's. Could just meet in the bar with option for dinner if desired. Any other takers for meeting from the South Bay area? I'm ok with other ideas if Pedro's doesn't sound good. Pedro's - Mexican restaurant 3935 Freedom Cir Santa Clara, CA 95054 C...
by Rex Allers
Wed Jan 23, 2019 8:21 am
Forum: Announcements and Site Administration Topics
Topic: Straw Poll / Proposal for San Francisco Area mini-meetup
Replies: 32
Views: 2625

Re: Straw Poll / Proposal for San Francisco Area mini-meetup

Joe says he'll be in our area Jan 29 (tues) thru 31 (thurs). I'd like to have us meet some evening (or?) in there. Anyone else game? Where are you staying, Joe? Let us know and we can look for a central place. Joe, that's a short window. Any thoughts from you on ideas for meeting up? Hope some can d...
by Rex Allers
Mon Jan 21, 2019 3:49 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: 50kV Supply
Replies: 24
Views: 1735

Re: 50kV Supply

Dennis, not sure what you meant to type but those door knob caps surely must be a lot more that 0.1pF.