Hi Andrey, I used 2 SED1520 from different manufacturer and they don't have the same pinout, sometime the names are different, DI is for Data/Instruction and...
1623
Andrey
andrusun
Dec 8, 2011 7:55 am
Hello! Can somebody help me ..explain about how connect lcd 122x32 with pic18 from previous Gamma-Grapher circuit? I didnt find in Japan same SD1520 ..bought...
1622
Nick Andrews
nicothefabulous
Dec 7, 2011 9:09 pm
A $50 sound card IS a high end one for almost all of us! A $5 one is standard... ... -- Nick A "You know what I wish? I wish that all the scum of the world...
1621
John Doe
billyalain33
Dec 7, 2011 9:08 pm
Hi, Someone asked for it on Utube, so I took one hour and made a quick description of this circuit (attached pdf), let me know if you want more details. Alain...
1620
John Doe
billyalain33
Dec 7, 2011 8:46 pm
Hi JP, The PCB were made by another member and he gave me 5. This evening I had one left but unfortunately I offered to Dave to send it, in case he will not...
1619
jplagasse@...
jplagasse
Dec 7, 2011 8:29 pm
Hi Alain I'd be willing to be a Guinea pig for the newest build also... Where is current bom, schematics etc. Do i buy my own parts from mouser/digikey, which...
1618
davearea51
Dec 7, 2011 7:55 pm
Alain: That spectrum of Th sure looks better than mine using NaI(Tl) and a sound card! And I presume you are using BGO. Your K-40 peak is also more distinct...
1617
Happynewgeiger
happynewlaser
Dec 7, 2011 5:56 pm
From my last test on a alpha shint , I had to undersupply at 600v . I could detect pulses up to 9Mev... MUONS!!! ... From: John Doe To:...
1616
Happynewgeiger
happynewlaser
Dec 7, 2011 5:54 pm
Considering the background noise a random noise ( and it is not) you could make a spectrum than make the shape that we know it is an decreasing exponential ,...
1615
John Doe
billyalain33
Dec 7, 2011 4:32 pm
OK, now I have the complete family, if one day I can get a Co60 I will also test it. The Potassium was not easy to get due to the 2 counts/s rate I had to wait...
1614
Happynewgeiger
happynewlaser
Dec 7, 2011 3:39 pm
ok ordered one.. ... From: billyalain33 To: GammaSpectrometry@yahoogroups.com Sent: Wednesday, December 07, 2011 4:20 PM Subject: [GammaSpectrometry] Re: New...
1613
John Doe
billyalain33
Dec 7, 2011 3:39 pm
Yes!!! After several weeks of the mysterious blindness to high energy I'm starting to have a result (see picture) I used a very low HV (736V), my favorite tiny...
1612
billyalain33
Dec 7, 2011 3:20 pm
Well, for now there is no major improvement on the 128x64, I'm using it on my new MCA but I was satisfied with the SED1520 on my prototype MCA. Both software...
1611
Happynewgeiger
happynewlaser
Dec 7, 2011 2:48 pm
Yes must be the compensation formula, it gets lot of premium on higher energy so the very low don't get out. With the right balance the low 32 kev of cs137 is...
1610
billyalain33
Dec 7, 2011 2:31 pm
Hi Happynewgeiger, Yes, true, I have no detection under 60KeV, mostly because I have no interesting source to check under 59KeV. The first peak may be lower...
1609
Happynewgeiger
happynewlaser
Dec 7, 2011 1:47 pm
Hallo Alain, it seems your system has a low gain on lower energy than 15kev... I see the 660 cs137 but not the 32kev, than the first Radium peak of the four...
1608
John Doe
billyalain33
Dec 7, 2011 11:44 am
Hello, From several requests there is a need for an external probe for the Gamma Grapher MCA. The Cockroft multiplier used in my original design has 11 stages...
1607
jp2cbyou
Dec 4, 2011 4:00 am
I recycle most of mine to make vitamins and baby formula. What I have left over I find to be a very good liquid fish attractant during my many fishing trips! ...
1606
Stephen Young
frenchcanadi...
Dec 3, 2011 12:04 am
What happen to the effluents? Stephen Young ... What happen to the effluents? Stephen Young From: jp2cbyou <jp2cbyou@...> To:...
1605
jp2cbyou
Dec 2, 2011 10:57 pm
I can't remember what I cleaned it with, it was over 15 years ago. Lots of water I know and I think diluted HCl too. Hcl will form the chloride salt so i would...
1604
jp2cbyou
Dec 2, 2011 10:30 pm
Common Sense applies always, just often not used or spoken of. Gloves, eye protection, apron, face shield, respirator. If a combination of above does not...
1601
rbuck777
Dec 2, 2011 6:52 pm
Was someone interested in a Canberra Series 35 Op manual? I went spelunking through my files for something else and found one. I thought I remember someone...
1600
Nick Andrews
nicothefabulous
Dec 2, 2011 5:24 pm
Some very good points. Not a good idea to do this in your kitchen! Use your laundry sink in the garage and wash your hands well and completely after handling...
1599
Randall Buck
rbuck777
Dec 2, 2011 4:45 pm
NiCad Batteries: You probably already know this, but someone who is just following this thread might not. By prying open a NiCad battery, you are exposing...
1598
Nick Andrews
nicothefabulous
Dec 2, 2011 4:29 pm
I tore apart a cell from an old cordless phone pack last night. Got two pieces of perfed metal, one covered by black stuff, the other gray. What kind of bath...
1597
richardp61
Dec 2, 2011 1:12 pm
... Well I think for this application both Li-6 and Li-7 work although for processing into tritium for thermonuclear devices etc I think it has to be Li-6....
1596
Scott Stephens
scott5342000
Dec 2, 2011 12:50 pm
... Long time ago I read somewhere they took the fun isotope (6 or 7) out....
1595
richardp61
Dec 2, 2011 12:37 pm
Thinking laterally here, what about the idea of using Li in a home neutron generator? Li is certainly one of the low-Z elements that can be used for this...
1594
jp2cbyou
Dec 2, 2011 1:35 am
Yeah thats pretty much what I thought, just not what I wanted to hear. Thanks for the input....
1593
GEOelectronics@...
k0ff
Dec 2, 2011 1:21 am
Only pure metal stands a chance of generating enough neutrons to be measured, even with a really good detector. That said, it takes a TON of alpha to do the...
