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Signals and Systems by Smarajit Ghosh

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5.4 DEFINITION OF BASIC ELEMENTS OF BLOCK DIAGRAM
  • Block Diagram: The shorthand pictorial representation of the cause and effect relationship between the input and output of a physical system is known as block diagram. Figure 5.2 shows the representation of a block diagram

     

    Block diagram

     

    Fig. 5.2 Block diagram

     

  • Output: The value of input multiplied by the block gain is is known as output.

    From Fig. 5.2(b)

     

    C(s) = G(s) R(s)       (5.5)

     

  • Summing Point: At summing point two or more signals can be added or subtracted.

    Fig. 5.3 shows a summing point.

     

     

    Fig. 5.3 Summing point

     

    In Fig. 5.3, X(s), Y(s), and Z(s) are the inputs while C(s) is the output. ...

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