radioactivity Archives - Page 2 of 4

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Some rad links…

Posted on August 1, 2012 7:44 pm by Johan

Below are some interesting links about radiation (detection) that I have collected over time:

Have questions about geiger counters, the CDV-700 or gammaspectrometry? Just go to these Yahoo groups:

CDV700CLUB : The CDV 700 Club is a forum for like minded individuals that enjoy collecting, fixing up, and using geiger counters and other r

GeigerCounterEnthusiasts : PAGE 2…for Archives go to PAGE1

GammaSpectrometry : Gamma Spectrometry

Want videos? Check out these awesome Youtube channels:

http://www.youtube.com/user/antiprotons?feature=watch

http://www.youtube.com/user/antiprotons?feature=watch

Want pictures? Check out the Flickr Radioactivity pool: Continue reading → Post ID 1080

📂This entry was posted in Electronica english wetenschap/science 📎and tagged Electronica english geiger counter radioactiviteit radioactivity
New geiger counter build

Posted on July 7, 2012 7:56 pm by Johan

I’m currently building a GM counter for a friend and was looking for nice, low
power circuits working on 9V cells.

I found this circuit which is derivative of Charles Wenzel’s designs:

http://www.mikrocontroller.net/attachment/103170/Geiger_Hochspannung.png

Components are fairly basic apart from the HV transistor and zeners. The other
transistors can be basically any small signal PNP/NPN transistor from the
junkbox. I used BC547 and BC557 and a MPSA44 HV transistor. Continue reading → Post ID 1080

📂This entry was posted in Electronica english wetenschap/science 📎and tagged Electronica english geiger counter high voltage radioactivity soldering
GS-1100A2 teardown and review

Posted on May 12, 2012 8:58 pm by Johan

The Australian company Bee Research offers the Gamma Spectacular USB powered scintillation probe bias supplies with integrated preamplifier and audio output. With this box, a scintillation detector and the excellent free PRA software it is possible to perform some basic gamma spectrometry far cheaper than obtaining a multichannel analyser, which usually cost thousands of dollars/euros.

I bought one of these from a Yahoo groups Gamma spectrometry member out of curiosity. What’s in this little box? Continue reading → Post ID 1080

📂This entry was posted in Electronica english wetenschap/science 📎and tagged Electronica english gammaspectroscopy radioactiviteit radioactivity science scintillation detector
Most fearsome medical treatments

Posted on May 6, 2012 2:42 pm by Johan

I have a more than healthy interest in medical procedures. When I have something or hear from somebody having some sort of serious illness I read up on it. Most stuff is just interesting, but some treatments cause me to fear and respect medicine. Here are some of the treatments I will hopefully never need:

(please note, I am not a doctor, consult one for official opinions on these procedures)

Heart transplant

A heart transplantation is performed when a heart is no longer able to support the patients body. The new heart is harvested from someone who has recently deceased and is kept on artificial circulation to keep the heart in good condition. When the surgery is near, the heart is stopped and put on ice. The patient is put on cardiopulmonary bypass which means that circulation and oxygenation of the blood is done with a heart-lung machine. The old heart is removed, the new one put into its place and connected to the main veins and arteries. The heart is then restarted and from then on handles circulation in its new body. Continue reading → Post ID 1080

📂This entry was posted in english medisch/medical wetenschap/science 📎and tagged cancer fearsome medisch/medical radioactivity respect
Easy GM tube connecting and testing

Posted on March 28, 2012 11:20 pm by Johan

Need a simple interface for connecting GM tubes to geiger counters? Use 1/4″ /6,35mm TRS sockets and plugs. It’s not what these plugs and sockets were designed for but it works nice. I use the tip as positive, ring as return and sleeve for ground. Two wires are sufficient to connect geiger tubes but the sleeve is connected to the ground of the circuit and to the shield of shielded cabling. You can also solder geiger tubes directly to the plug, I have done this with a SI-29BG tube and it works fine. Continue reading → Post ID 1080

📂This entry was posted in Electronica english wetenschap/science 📎and tagged english geiger counter radioactiviteit radioactivity

Some rad links…

New geiger counter build

GS-1100A2 teardown and review

Most fearsome medical treatments

Heart transplant

Easy GM tube connecting and testing