Search found 285 matches

by David Kunkle
Thu Feb 09, 2017 2:37 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: My hope for a power supply
Replies: 4
Views: 1364

Re: My hope for a power supply

“Intermittent duty up to 3kV output at half an amp with 75VAC 20A input at 25KHZ. Constant duty about 1/4 that." This is probably from a dental x-ray unit. These are designed to run for a fraction of a second at a time and so the intermittent duty rating. Fusor usage will require constant output. Wh...
by David Kunkle
Mon Feb 06, 2017 8:10 pm
Forum: New User Chat Area
Topic: cps/nv
Replies: 5
Views: 1245

Re: cps/nv

Now it all makes sense- that was the last bit I was missing. I get 0 search results for cps/nv in all of fusor.net. Thanks.
by David Kunkle
Thu Feb 02, 2017 6:03 pm
Forum: New User Chat Area
Topic: cps/nv
Replies: 5
Views: 1245

cps/nv

This came up under Chris' Domino neutron detector, but I thought it might be better posted here. By Allen Wallace in 2006: For those who are not familiar with cps/nv, it means that my tube generates 64 pulses per second for every 1 thermal neutron per sq. centimeter per second. Never came across cps...
by David Kunkle
Thu Feb 02, 2017 5:52 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode Layer Ion Source Mod?
Replies: 14
Views: 3804

Re: Anode Layer Ion Source Mod?

5W- hadn't thought of it in those terms yet. About the equivalent of a turn signal bulb in a Buick.
If I recall, I started getting some intermittent arcing when I tried to go over 2kv. Don't think the little alumina insulators would care for 60kv let alone 100! ;)
by David Kunkle
Tue Jan 31, 2017 4:47 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: New neutron detector available
Replies: 20
Views: 5687

Re: New neutron detector available

"Price is reasonable. I can't give a number since I got my quote for a business,"
Since no price is listed on the website, what was the quote they gave you?

"Solutions of LiF were painted on the silicon surface "
What would one use to make a solution of LiF?
by David Kunkle
Tue Jan 31, 2017 3:21 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode Layer Ion Source Mod?
Replies: 14
Views: 3804

Re: Anode Layer Ion Source Mod?

The shop had already drilled the base plate, etc., so I stuck with my original plan. Now that it's been fired up, the 4th hole doesn't appear to affect it like you said. My source is at about 1kv, 5 ma, and 5 mTorr in the pics. Still playing with settings. No Viton o-ring installed yet. Can't feel a...
by David Kunkle
Sun Jan 29, 2017 3:54 pm
Forum: Announcements and Site Administration Topics
Topic: Fusor.net Outage
Replies: 11
Views: 3104

Re: Fusor.net Outage

. We have regressed back to a time where productivity is worse than it was before smart phones and computers. We wait for the machines and are slaves to the machines. We waste our time doing updates and learning the new idiosyncrasies of software after software. I can think of no better response th...
by David Kunkle
Wed Jan 25, 2017 3:36 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode Layer Ion Source Mod?
Replies: 14
Views: 3804

Re: Anode Layer Ion Source Mod?

Got it all. Thanks. May have given the wrong impression. Took the flange to the weld shop to have the holes drilled and tapped- no welding. Not a big fan of working on SS. Main problem is probably cheap drill bits and lack of enough lubrication in the past. Ordered a few different size Viton O-rings...
by David Kunkle
Tue Jan 24, 2017 8:08 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode Layer Ion Source Mod?
Replies: 14
Views: 3804

Re: Anode Layer Ion Source Mod?

I thought an o-ring would get too hot there. I'll have to find the right size and try that first. Lot less permanent than welding it. In light of that, I already have an extra CF blank that I'll use for the base. Took it to the weld shop this a.m. I noticed a long time ago it looked like it would si...
by David Kunkle
Mon Jan 23, 2017 8:32 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode Layer Ion Source Mod?
Replies: 14
Views: 3804

Anode Layer Ion Source Mod?

hjuklghjk 002.JPG One of Andrew's ion sources arrived here Friday. Got to thinking exactly how I was going to mount this. What if it was mounted/welded directly to the front of a CF or NW nipple? In the photo, the weld would fill the gap between the ion source and the inside of the CF nipple. This ...