Search found 208 matches

by AnGuy
Tue Sep 09, 2008 12:30 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: this will do the trick... new IGBTs
Replies: 5
Views: 2558

Re: this will do the trick... new IGBTs

<r>"ok- so what to do for deadtime?"<br/> <br/> You can use gate drives that have built in deadtimes, use gate drives that have programmable deadtimes, or use a PWM controller that supports a deadtime feature. PIC 18F (and newer) all have PWM controllers with programmable deadtime.<br/> <br/> Some g...
by AnGuy
Sun Oct 21, 2007 4:39 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: PIC 18F4450 MCA project
Replies: 0
Views: 1435

PIC 18F4450 MCA project

Wilfried,

I can't send you my project files because your ISP (e-mail) is blocking me, can you e-mail with an alternative e-mail address.

AG
by AnGuy
Thu Aug 02, 2007 2:07 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: homemade switchmode HV supply
Replies: 10
Views: 4048

Re: homemade switchmode HV supply

<t>>i was planning to use something like this for vacuum impregnation:<br/> <br/> I am not sure this will pull a hard enough vacuum to pull out the air from your windings. I used a glass jar attached to an automotive break line vacuum pump. Repeativity pumped down and backfilled until I saw no more ...
by AnGuy
Thu Aug 02, 2007 1:53 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: homemade switchmode HV supply
Replies: 10
Views: 4048

Re: homemade switchmode HV supply

<r>>but was thinking a center-tapped primary, with one half wound reverse to the other, so a single poalarity supply can be used and the transformer driven from 2 semiconductors rather than 4 as in a H-bridge design. the MOSFETs or IGBTs will be on the ground side of the primary, to eleviate the nee...
by AnGuy
Sun Jul 01, 2007 1:17 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: homemade switchmode HV supply
Replies: 10
Views: 4048

Re: homemade switchmode HV supply

<r>>and finally, where does one obtain polyester sheeting to insulate the transformer lairs? i can;t seem to find unmetalized and un-sticky gunked stuff anywhere (at least in UK)<br/> <br/> Try US Plastics. You can buy clear non-metalized Mylar from them. Although you may want to consider appling a ...
by AnGuy
Fri Feb 02, 2007 3:19 am
Forum: Announcements and Administration Archive
Topic: IEEE Xplore: Guilty of Google spamming
Replies: 14
Views: 17649

Re: IEEE Xplore: More evidence of hyperbolic greed

FWIW: One easy work around is to put a "-ieeexplore.ieee.org" at the end of your search term. This will prevent all those anoying pages from displaying in your search hits.
by AnGuy
Thu Nov 23, 2006 3:51 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: HomeBrew MCA
Replies: 3
Views: 2247

Re: HomeBrew MCA

<t>>Wil:Can you add a photo of your MCA electronics to admire? <br/> <br/> Unfortunately I don't have a working digital camera. The last one I had broke. Currently the prototype is two seperate wirewrap boards: one for the detector (HV source+Charge Preamp+Amp+SCA) and the other for the Capture (PIC...
by AnGuy
Sun Nov 19, 2006 6:22 pm
Forum: Interesting Links
Topic: The next wonder of the world?
Replies: 13
Views: 4221

Re: The next wonder of the world?

<t>FWIW: I believe there is already a practical solution. The spent rods can be encasulated in obsidian glass which renders it virtually inert. The reason why this isn't on the list, is that many of the powers that be, expect that we will recycle the spend fuel rods as the price of uranium rises. Wh...
by AnGuy
Sun Nov 19, 2006 5:57 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: HomeBrew MCA
Replies: 3
Views: 2247

HomeBrew MCA

<t>I had a little time this weekend to work on my MCA project. Its based on a PIC18F4550 Microcontroller with USB. It uses the built in 10-bit ADC and USB port to capture and send data. I wrote a Windows App. as an interface. Below are two snapshots. The first one is a run was about an hour with an ...
by AnGuy
Fri Oct 20, 2006 2:03 am
Forum: Vacuum Technology (& FAQs)
Topic: Silver soldering/brazing
Replies: 13
Views: 3351

Re: Silver soldering/brazing

<r><br/> Heres a post on groups.google.com<br/> <URL url="http://groups.google.com/group/rec.crafts.metalworking/browse_thread/thread/86050420c1247ab2/6cdb584559b1e073?lnk=st&q=silver+tig+brazing&rnum=4&hl=en#6cdb584559b1e073"><LINK_TEXT text="http://groups.google.com/group/rec.craf ... ...