Tuesday, May 21, 2013

Demonstration of Geiger Tube emulation with DDS generator and DIY Geiger Counter with NOKIA 5110 LCD

Here is the video where I connected DDS generator for Geiger-Muller tube emulation. It starts from 1Hz (60 cpm) and goes up to 4000Hz (240000 cpm) The accuracy is better for low background cpm. Maximum cpm error is 4% on the highest values.  Counting ability for this prototype is 500000 cpm. In real life condition with SBM20 tube we'll be able to register about 1mSv/h (or 175000 cpm) because of tube limitation (the tube has physical limitation for cpm counting).

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