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Network theorems and complex circuit analysis

Discussion in 'Electronic Basics' started by JeffS, May 20, 2004.

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  1. JeffS

    JeffS Guest

    I have found that books on basic electronics (e.g. Bernard Grob's Basic
    teach you how to use the network theorems:

    1. KVL and KCL
    2. Branch current analysis
    3. Node Voltage analysis
    4. Mesh current analysis
    5. Superposition theorem
    6. Thevenin's theorem
    7. Norton's theorem
    8. Millman's theorem

    The problem for me is that all the explanations use purely passive
    components (resistors,
    capacitors, inductors) with either DC (battery) or pure sinewave AC sources.
    Are there
    any good books with thorough explanations of how to use these theorems with
    components such as transistors, diodes, etc? Do any books give examples of
    to analyze complex (multistage) circuits using these techniques?

  2. Joel Kolstad

    Joel Kolstad Guest

    Sure... check out Sedra & Smith, "Microelectronic Circuits." The reason the
    books you have emphasize linear network analysis so much is due to the fact
    that analyzing circuits with active devices is usually done by linearizing
    the device's operating about its basis point... which gets you back to a
    linear network.

    This is the so-called "small signal model" approach. Analyzing anything
    more than small circuits using the full (large signal) equations is rather
    challenging (or at least tedious) and is usually left to computer simulation
    (which solves the differential equations numerically).

    ---Joel Kolstad
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