Recent content by zepto-

  1. Z

    Hall Effect sensor design - opposite input

    Yes, the magnet is in the sensor. There are coils around the magnet and the moving metal (or lack of metal) creates the flux. Type 2 in the picture is the intended use of the gauge I have, but I want to use it to sense type 1. I really wish I had the vocabulary/ experience to keep up with...
  2. Z

    Hall Effect sensor design - opposite input

    I am terrible with electric. I just need some guidance on reconfiguring a hall sensor to read the opposite input. I have an analog tachometer from the '80s that was used to sense a groove on a grounded, spinning disk. I want to use the probe (which has 3 wires) to sense a raised piece of...
  3. Z

    Charge Amplification - Tips & Techniques for Limited Access

    specs: pulse freq: - - - - - - - - - - - 6.25 Hz sensor output voltage sensitivity:- - - - - - - - - 1.1 V/g (assume 0.25 g for app.) charge sensitivity: - - - - - - - - - 260 pC/g Sensor capacitance: - - - - - - 244 pF required charge input from amplification is at least 100 E-9 Coulombs.
  4. Z

    Charge Amplification - Tips & Techniques for Limited Access

    I am still absorbing all the posted information, forgive me for not having an intelligent reply. The event frequency from the sensor will be at least 6.25 Hz and preferably higher. .. if that helps understand the op-amp issue. thank you all very much for the insight.
  5. Z

    Charge Amplification - Tips & Techniques for Limited Access

    I am not sure what you mean by 'datasheet' - I am not an engineer, yet. I have data specs for the sensor, but not a full set for the application and intended circuitry. I have been reading about charge amplifiers and my current question is: How do I determine the ratings for a charge...
  6. Z

    Charge Amplification - Tips & Techniques for Limited Access

    my issue is the sensor I am using puts out a variable amount of charge dependent on force / impact etc. I have yet to test the sensor in my design, so this is somewhat preliminary. It is a piezoelectric sensor with 1 v/g (max) - I doubt I will approach this with my design. The ratings for the...
  7. Z

    Charge Amplification - Tips & Techniques for Limited Access

    I may need to amplify a very small, momentary charge. - a pulse. I have little information about charge amplification and have limited access to more. What are some related search terms for amplifying charge? Do you have any suggestions for doing so?
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