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  1. #1
    Junior Member level 3
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    defibrillator protection

    Hi everybody,

    I am designing an ECG system, and I need some help for selecting the proper element in order to protect my amplifier against a defibrillator shock.

    Any idea or link to share with me?

    Thanks in advance

  2. #2
    Member level 1
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    Re: Defibrillator Protection

    Hi!
    I think the easiest way to do it is just to place a resistor in series with each lead, and to limit voltage by a diode limiter. To widen the common-mode range you need to limit the voltage to some volts. You also have to care about safety - first-fault has to be safe.



  3. #3
    Advanced Member level 2
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    Re: Defibrillator Protection

    Hi

    It depends what you are after, it is quite costly but check the isolation amplifiers from Texas.
    Here are one article:
    http://focus.ti.com/lit/an/sboa062/sboa062.pdf
    Search for Defibrillator at TI and you find much more. Also try google.
    If you need more PM me and I try to find.

    Cl