Search found 82 matches

by Cai Arcos
Tue Sep 29, 2020 4:47 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: NEW Fusor V build under way.
Replies: 63
Views: 11515

Re: NEW Fusor V build under way.

I do tend to dislike travel. Home is called home for a reason! Your comment about never visiting 35 states made an European like me realize how huge and vast the USA really is. You could in fact visit almost all climates without changing country. The calculation of flux in a non uniform scenario see...
by Cai Arcos
Sun Sep 27, 2020 9:29 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: NEW Fusor V build under way.
Replies: 63
Views: 11515

Re: NEW Fusor V build under way.

Richard:

Would you consider posting the derivation of the calibration factor here after HEAS? I'm really interested in it, but unable to attend (I have, in fact, never travelled outside Europe, and only once with in).
by Cai Arcos
Sun Sep 13, 2020 6:33 pm
Forum: Interesting Links
Topic: 4hv
Replies: 3
Views: 766

Re: 4hv

Rich: Using gmail, the mail "4hv.org" is erroneous. It wouldn't even let me send the message in the first place. That's why I thought that there must be some appendix. A webpage that has lasted 10 years... Sites like those (obviously fusor.net included) always bring me a bit of joy, because they sho...
by Cai Arcos
Sun Sep 13, 2020 2:39 pm
Forum: Interesting Links
Topic: 4hv
Replies: 3
Views: 766

4hv

Hello: I recently found a forum called 4hv which seems to be packed to the brim with useful information. I tried registering, but I'm required to send an e-mail to "4hv.org". I thought I had to add the standard @gmail.com, but apparently such direction does not exist. I presume some people here are ...
by Cai Arcos
Wed Sep 02, 2020 6:07 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: For those frustrated by spark gaps...
Replies: 4
Views: 1098

Re: For those frustrated by spark gaps...

That is a very good idea! I do wonder if you could trigger those spark gaps using a magnetic field, thus creating a cheap and easy-to-make trigatron. Furthermore, it could be triggered using high-current low-voltage pulse, and thus simple solid state circuitry. In theory, you would put a coil around...
by Cai Arcos
Sat Aug 29, 2020 5:52 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Help with HV adjustable power supplies for radiation detectors.
Replies: 38
Views: 8205

Re: Help with HV adjustable power supplies for radiation detectors.

Well, no mater what I do, I am not able to observe a sinewave on the scope. All I see is 50hz hum and the noise of the supply. I will have to try something else EDIT: I also appear to have destroyed my last TL072, so until Monday, I'm not going to be able to do anything else EDIT EDIT: Searching in ...
by Cai Arcos
Sat Aug 29, 2020 4:53 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Help with HV adjustable power supplies for radiation detectors.
Replies: 38
Views: 8205

Re: Help with HV adjustable power supplies for radiation detectors.

If I understood correctly, my main objective using this technique is to observe the phase shift at 0db and make sure it is high enough (between 45 or 50 degrees).
If I make my function generator float, then the transformer is unnecessary, right?
by Cai Arcos
Sat Aug 29, 2020 3:48 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Help with HV adjustable power supplies for radiation detectors.
Replies: 38
Views: 8205

Re: Help with HV adjustable power supplies for radiation detectors.

The problem is that I dont know the characteristic function of the CCFL-Inverter and bridge-filter themselves, so planning for compensation is, well, impossible. The best I'm doing is inserting various capacitance values between the feedback and the output pin of the TL072 until the noise (which ver...