Module: Geiger Counter

Project to send a balloon into lower space with payload
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Rris
Posts: 66
Joined: Mon 12 Oct 12 2009 9:17 pm

Module: Geiger Counter

Post by Rris » Thu 07 Jan 07 2010 10:43 pm

Geiger Tube: http://www.sparkfun.com/commerce/produc ... ts_id=8875
Cost: $93.95USD

Biggest issues: Requires 500vDC and isn't so small (almost 2" long).

Importance: Very low.


Schematics for implementation on SFE's site, including high voltage side of things.

This module would get powered down if power usage was deemed too high for preserving the battery life.

Daniel Wee
Site Admin
Posts: 2084
Joined: Wed 25 Feb 25 2009 8:00 pm

Re: Module: Geiger Counter

Post by Daniel Wee » Mon 20 Dec 20 2010 9:14 pm

Here you can find some HV supply circuits along with suitable detectors. The 3V one is especially suitable. You may want to optically isolate the output, which I think can be run at 3.3V. This will then drive an interrupt gate which counts the number of pulses.

http://www.techlib.com/science/geiger.html
http://www.galacticelectronics.com/GeigerCounter.HTML
http://www.maxim-ic.com/app-notes/index.mvp/id/3757

Daniel

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