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  1. Valtrex

    Solenoid Parameters

    Thanks for your insightful suggestions. Does anyone have any suggestions for assembling an LVDT to measure the vibrations of the metal without touching it. The vibratons range between 0 to 5 kHz. the ampltiude shoulod be in the order of 1/10 of a millimeter. Thanks again.
  2. Valtrex

    Metal Detector application

    HI I am hoping to use the same principle that metal detectors use to measure the vibration of a moving plate. However I am unable to find detailed enough books on their design. Could someone refer me to please?
  3. Valtrex

    Measuring Vibrations using inductive Coils

    I need some advice on how to design a measuring system for vibrations using inductive coils. I would like to ko=now what books to refer to and where I could source information
  4. Valtrex

    Solenoid Parameters

    Hi, I need to design a solenoid or some other magnetic coil so that I can pick-up vibtations from a metal plate. I know that the type of the metal, the size of the solenoid, the number of turns etc will affect performance but I don't know how. I would appreciate if anyone could direct me to...
  5. Valtrex

    Negative Sequence Filter

    Thanks I got a hold of a copy of the book. However, in chapter 3 of the 1982 edition, where they spoke about sequence voltage networks, they stated that Z + R is designed so that the I lags V by 60 deg. Why is this done and how does it lead to the filtering of the negative sequence voltage?
  6. Valtrex

    Negative Sequence Filter

    Thanks BusBar but do you know if I could get an online version of the book Westinghouse "Applied Protective Relaying,?
  7. Valtrex

    Negative Sequence Filter

    Hi Could anyone refer me to a book or some other resource where I would find how elementry sequence filters can be used to measure negative sequence voltages and current. Thanks

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