Recent content by pretty_fly

  1. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    Baluncore and analogdesign thank you for advices. Currently i got some other advices too and need to read, think and work on all of those. Hope to see your further advices soon :))
  2. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    exactly :) a different particle with different energy produce a signal with (linearly) different amplitude. for example: 500 keV particle --> 1V , 250 keV particle --> 0.5 V (btw not a general rule but mostly detector amplification systems work like this) For example I want to count particles...
  3. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    Maybe this picture can be helpful. t1 ~10 us and A1~10 mV for a sample source. t2 = 10us (means 100kHz signal/radiation detection --> each rad. particle gives one signal) A2 = 1V Gaussian output is for spectrum (identifying different energies of different particles.) Also planning to convert...
  4. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    Hi Baluncore my purpose is to get a gaussian signal, symmetrical shape is best, at the end of my "shaping amplifier". I found the maxim integrated app note "gamma ray detector" circuit. However it gives a bipolar output. So probably i need to learn first the theory of active filters and types...
  5. pretty_fly

    Designing and Simulating Shaping Amplifiers for Detector Applications

    Hello everybody, nowadays I am working on shaping amlifiers and need guidiance about how to design one and do its simulations before pcb design and manufacturing. When googling about shaping amplifiers i found documents mostly about filters (active and passive), which i know works for rejecting...
  6. pretty_fly

    Help needed with charge sensitive amplifier circuit

    I had similar problems and couldnot undestand still. This made me think that the situation is about the properties of opamp simulation models. All my treatments about simulating especially such small signal stuff was unsuccefull. But you may find some solution when you look at from this view.
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