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Electronic quenching!

  1. Mar 14, 2009 #1
    Dear friends,

    Plz. tell me about 'Electronic quenching' in Geiger Muller tubes.Thanks.
     
  2. jcsd
  3. Mar 14, 2009 #2

    malawi_glenn

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  4. Mar 14, 2009 #3
    The Geiger tube has a resistor (~ 10 meg) in series with it. It is in essence a charge amplifier tube because a small ionization charge gets amplified. When ionization occurs (cosmic ray) and creates an avalanch, (charge multiplication) occurs, the tube draws a lot of current, and the voltage across the resistor increases. This causes the tube voltage to drop a lot, stops the avalanch, and gives the ions in the gas time to recombine. The current in the tube stops, and the voltage rises again.
     
  5. Mar 26, 2009 #4
    Can anyone help me ? I need to build logic gates inside analog circuit . Such case i need to get analog output , such case i need digital output . How to build analog and digital together in one circuit ? I need to use Logic gates with Opamp and control LEDs . Help me if u know it .. thanks !
     
  6. Mar 27, 2009 #5

    malawi_glenn

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    why not start a new thread???
     
  7. Mar 27, 2009 #6
    what do u mean by a new thread ?
     
  8. Mar 27, 2009 #7

    malawi_glenn

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    This thread already have a question and some answers to it. If you have a new question, start a new thread. Don't you know how forum works?
     
  9. Mar 27, 2009 #8
    I'm sorry .. this is the first time i use forum !
     
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