Basic circuit theory. Front Cover. Charles A. Desoer, Ernest S. Kuh. McGraw-Hill, – Technology & Engineering – pages. Basic Circuit Theory. • I • I. Charles A. Desoer • and. Ernest S. Kuh. Department of Electrical Engineering and Computer Sciences University of California. Basic Circuit Theory by Ernest S. Kuh, Charles A. Desoer from Only Genuine Products. 30 Day Replacement Guarantee. Free Shipping. Cash On.
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Charles a. Desoer, Ernest S. Kuh-Basic Circuit Theory(1969)
Keeping this uniqueness property in mind, we should note again the analogy with logarithms as follows: Turning now to the general case, we consider as before a linear resistive network with passive resistors driven by current sources. Thus, the problem of solving the equations in 2. In other words, Pt. Differentiating baic time function, we obtain Sec.
Basic circuit theory – Charles A. Desoer, Ernest S. Kuh – Google Books
The symbols of the voltage source and the arbitrary circuit connected to it are shown in Fig. It may happen that s 0 is a natural dssoer of the network, but not a pole of Z s. These nonlinear devices have a unique property in that the slope of the characteristic is negative in some range of voltage or current; they are often called negative-resistance devices and are of importance in electronic circuits.
Indeed, since these forces are attractive hence their reference direction is opposite to that of the velocity. However, it charlez possible to reformulate the problem as a minimization problem.
Basic Circuit Theory
Substituting v, we obtain 5. Indeed, not only do the voltage sources and the current sources deliver energy to the circuit but also the mechanical forces that cause the elements to change their values.
Remark It is crucial to note the importance of the assumption that all dircuit are positive. The equivalent resistor has the characteristic shown in Fig. Write all the fundamental loop and cut-set equations.
Then our assumption would mean that there would exist a linear resistive network with positive resistances which would have a current gain larger than 1. Obviously, if the characteristic passes through the q q t ‘-! It turns out that the converse is true. With this concept in mind it is clear that resistors, independent voltage sources, capacitors, and inductors are simple and special examples of one-ports consisting of a single element.
The middle resistor of the network shown in Fig. Note that the second assumption is necessary because some passive linear time-invariant networks do not have a driving-point impedance, e.
In linear time-invariant networks, taking the branch equations into account, the l equations can be put explicitly in terms of the l fundamental loop currents. If we consider the characteristic of the automobile battery plotted in Fig. One other factor cannot be overlooked.
Uniqueness is as fundamental as it is intuitively obvious. If the network has no coupling elements, the branch admittance matrix Yb jw is diagonal, and Yq jw is symmetric. The last chapter on Preface vii energy and passivity considers the energy balance in time-varying elements, parametric amplifiers, and the characterization of passive one-ports. Includes appendices on Matrices, Determinants and Differential Equations. The short-circuit admittance parameters are easily obtainable from their physical interpretations [Eqs.
Since in Laplace transform theory we allow s to take any value in the complex plane, we formally extend our definition as follows: Strictly speaking, we have only established 5. We then think of them as functions of time. We choose to plot the state trajectory on the qcp plane with scales so chosen that the trajectory is circular see Fig.
If there are no coupling elements, a. From its definition, a voltage source has a characteristic at timet which is a straight line parallel to the i axis with Vs t as the ordinate in the iv plane, as shown in Fig. Salient Features Novel formulation of lumped-circuit theory which accommodates linear and non-linear, time-variant and time-varying, and passive and active circuits.
Example 5 To get a feel for the problem of solving nonlinear charlles networks, consider the simple circuit illustrated in Fig. It should be stressed that this char,es no restriction on the important circuit-theoretic conclusions of Sec.
Forexample, if the number of tree branches, n, is much smaller than the number of links, l, the cut-set method is usually more efficient. In some cases we find it more convenient to use voltage sources than current sources.