Search found 341 matches

by Bob Reite
Sat Jun 12, 2021 12:11 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Power capability question
Replies: 20
Views: 1104

Re: Power capability question

The ripple frequency will be 360 Hz (assuming a 60 Hz) supply) for the three phase connection. Operating it from single phase will make the ripple frequency 120 Hz, and it will not be filtered as well. Don't know if that would be critical for this application or not. If so, the size of the filter ca...
by Bob Reite
Mon Jun 07, 2021 2:17 am
Forum: Images du Jour
Topic: New Home for Doug's Fusor
Replies: 22
Views: 2870

Re: New Home for Doug's Fusor

I now have all the mechanical and vacuum aspects reassembled and the fusor is now under vacuum. I really like the intermittent backing pump set up. It turns out that Pfeifffer designed this system to operate this way. In any case, the pix please! fusor_front.jpg fusor_rear.jpg fusor_pressure.jpg For...
by Bob Reite
Sat Jun 05, 2021 2:26 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Using Silver (or other element) Activation to Quantify Neutron Output
Replies: 12
Views: 845

Using Silver (or other element) Activation to Quantify Neutron Output

In another topic, there was a proposal to define an activation standard. The concept was that a defined mass of silver, mated with a defined moderator, using a defined pancake counter probe, would be a standard of comparison between various fusors. Is there any way to determine neutrons per second a...
by Bob Reite
Sat Jun 05, 2021 2:03 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Operational Fusor Audit
Replies: 10
Views: 740

Re: Operational Fusor Audit

After attending HEAS 2020, I got my fusor set up to do activation of silver, but I was not satisfied enough to post the result, then the feedthrough developed vacuum side arcing problems above 22 KV which ended the attempts. I am now in possession of Doug's fusor which I am in the process of reassem...
by Bob Reite
Fri May 28, 2021 6:34 pm
Forum: FAQs: Fusor Construction & Operation
Topic: FAQ - Make your own deuterium from heavy water!! The video
Replies: 43
Views: 6484

Re: FAQ - Make your own deuterium from heavy water!! The video

You can also use an over/under pressure protection system consisting of two small vials initially half filed with pump oil. For details, visit topic http://www.fusor.net/board/viewtopic.php?f=6&t=9435. This will also give you some deuterium storage sufficient for a five to ten minute run.
by Bob Reite
Wed May 26, 2021 7:42 pm
Forum: Announcements and Site Administration Topics
Topic: Doug Coulter
Replies: 29
Views: 5060

Re: Doug Coulter

I did tell Doug that if anyone else shows interest that has the skills and lives closer to VA to let them have a go at it, but as it was, I was the most likely candidate willing and able to accept it. The main change that might make replication more difficult is the more stable feed throughs without...
by Bob Reite
Wed May 26, 2021 7:34 pm
Forum: Images du Jour
Topic: New Home for Doug's Fusor
Replies: 22
Views: 2870

Re: New Home for Doug's Fusor

To Joe Gayo and others: The theoretical discussion of operating a fusor as an electronic oscillator and how "Gonzo Mode" might work is under another topic titled "Fusor as an oscillator, a serious discussion". I will continue to use this topic to post the reassembly progress and operational results ...
by Bob Reite
Wed May 26, 2021 7:26 pm
Forum: Advanced Technical Discussion Area
Topic: Fusor as an oscillator....A serious discussion
Replies: 24
Views: 3923

Re: Fusor as an oscillator....A serious discussion

Ah! This looks like a good place to discuss what I think was happing with Doug's fusor seven years ago. Doug had mentioned that it was self oscillating, behaving like a Hartly or blocking oscillator. But from all the photos I have seen that is not what he had. There was no deliberate electrical coup...
by Bob Reite
Mon May 24, 2021 10:43 pm
Forum: Images du Jour
Topic: New Home for Doug's Fusor
Replies: 22
Views: 2870

New Home for Doug's Fusor

Here I will be posting images and descriptions of setting up Doug's fusor at it's new home in PA. The ultimate goal is to reproduce the "Gonzo Mode" reported by Doug about seven years ago. Gonzo Mode is reputed to produce 100 times the neutron output of a standard fusor for the same input power. Thi...
by Bob Reite
Fri May 21, 2021 10:56 pm
Forum: Announcements and Site Administration Topics
Topic: Doug Coulter
Replies: 29
Views: 5060

Re: Doug Coulter

Again, my experience with moving big vacuum tube transmitters was helpful. For those all the heavy iron transformers came out, not only to make it lighter, but to prevent damage to the cabinet, as the cabinet was designed for a static load, not stresses during moving. The vacuum tubes also came out,...