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Basic question

Discussion in 'Electronic Design' started by Jimbo, Jun 28, 2006.

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  1. Jimbo

    Jimbo Guest

    Is there a definition as to what constitutes an "isolated" vs.
    "non-isolated" circuit? What does this really mean? This is what I
    think the definition really is:

    A system S1 has an input V1,In referenced to V2,In and an output V1,out
    referenced to V2,out whereas V1,In - V2,In has an operating limit of L1
    and V1,out - V2,out has an operating limit of L2.

    Is an isolated system a system that can have the references V2,In and
    V2,out such that |V2,In - V2,out| >> 0 and still operate properly? If
    so what value of |V2,In - V2,out| constitutes an "isolated system"?

    Does anyone know of a formal definition of an "isolated" system? I
    know that usually it's some kind of LED operating on some kind of
    photo-sensitive device, but is that what the definition is limited to?
    I don't think so because a "relay" is usually called an isolated
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