DIY/Homemade Geiger Muller Clicker V1


Posted on Feb 5, 2014

Because the recent events in Fukushima, Japan, brought a lot of concern on radiation levels, by popular demand, here is a simple Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required. The complete setup has been assembled in only 5 minutes, so this is a very simple detector,


DIY/Homemade Geiger Muller Clicker V1
Click here to download the full size of the above Circuit.

but can prove useful because of the excellent sensitivity: The radiation is indicated by a led and a small speaker. Each pulse (flashing led and the clicking sound) represents a radiation quantum passing through the tube. To exemplify I`ve used a small source of radiation, the Eii-43-100 Spark gap radioactive tube, containing less than 0. 9uC of Cs137, emitting aprox. 1uSv/h of gamma radiation. The detector reacts promptly to the presence of the Spark Gap tube, the frequency of clicks increases, much over the background level. This design can be used with a large variety of Geiger tubes, but the output voltage and the limiting resistor might need to be adjusted accordingly. For the SI-22G, the parameters are: To get an idea on a correlation between the clicks and the real radiation dose, I`ve placed the excellent Radex RD1706 dosimeter close to the homemade geiger setup and the radioactive spark gap: [. ] By Radu Motisan Posted on January 8th, 2012 This geiger counter circuit features a regulated high voltage supply, with adjustable output. It can run on a single AA battery (1. 5V). The video shows several geiger tubes tested with this device: BG-08, G21H, SI22G, SBM19, SI14G Circuit diagram v3. 1: SCH File (ExpressSCH): geiger_clicker_2 You can view the previous article on DIY geiger counters here. [. ] I build the transformer for this circuit (P=20, F=10, S=150) but my oscilloscope shows only 45 volts peaks 188 Khz when...




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    RealView 2.0
    Game roller or chase circuit
    Audio Oscillator
    20W Stereo Amplifier Circuit
    DC Motor Control Circuit
    Active Voltage Doubler
    15v variable power supply circuit
    SINGLE CHIP DIGITAL VOLTMETER



    Top