Switch - in Circuit Theory

In Circuit Theory

An ideal switch would have no voltage drop when closed, and would have no limits on voltage or current rating. It would have zero rise time and fall time during state changes, and would change state without "bouncing" between on and off positions.

Practical switches fall short of this ideal; they have resistance, limits on the current and voltage they can handle, finite switching time, etc. The ideal switch is often used in circuit analysis as it greatly simplifies the system of equations to be solved, however this can lead to a less accurate solution. Theoretical treatment of the effects of non-ideal properties is required in the design of large networks of switches, as for example used in telephone exchanges.

Read more about this topic:  Switch

Famous quotes containing the words circuit and/or theory:

    Within the circuit of this plodding life
    There enter moments of an azure hue,
    Untarnished fair as is the violet
    Or anemone, when the spring strews them
    By some meandering rivulet, which make
    The best philosophy untrue that aims
    But to console man for his grievances.
    I have remembered when the winter came,
    Henry David Thoreau (1817–1862)

    every subjective phenomenon is essentially connected with a single point of view, and it seems inevitable that an objective, physical theory will abandon that point of view.
    Thomas Nagel (b. 1938)