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barcode reader code in asp.net Check Your Understanding in Software
Check Your Understanding Scan QR In None Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications. Print Quick Response Code In None Using Barcode generator for Software Control to generate, create QR image in Software applications. 321 A practical voltage source has an internal resistance of 12 and generates a 30V output under opencircuit conditions What is the smallest load resistance we can connect to the source if we do not wish the load voltage to drop by more than 2 percent with respect to the source opencircuit voltage 322 A practical current source has an internal resistance of 12 k and generates a 200mA output under shortcircuit conditions What percent drop in load current will be experienced (with respect to the shortcircuit condition) if a 200 load is connected to the current source 323 Repeat the derivation leading to equation 342 for the case where the load resistance is xed and the source resistance is variable That is, differentiate the expression for the load power, PL , with respect to RS instead of RL What is the value of RS that results in maximum power transfer to the load Denso QR Bar Code Reader In None Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications. Create QR In Visual C# Using Barcode generator for .NET Control to generate, create QR Code 2d barcode image in .NET applications. NONLINEAR CIRCUIT ELEMENTS
QRCode Generator In .NET Using Barcode generation for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications. Generate QR Code In VS .NET Using Barcode encoder for .NET framework Control to generate, create QR Code 2d barcode image in .NET framework applications. Until now the focus of this chapter has been on linear circuits, containing ideal voltage and current sources, and linear resistors In effect, one reason for the simplicity of some of the techniques illustrated in the earlier part of this chapter is the ability to utilize Ohm s law as a simple, linear description of the iv characteristic of an ideal resistor In many practical instances, however, the engineer is faced with elements exhibiting a nonlinear iv characteristic This section explores two methods for analyzing nonlinear circuit elements Description of Nonlinear Elements QR Maker In VB.NET Using Barcode generation for .NET framework Control to generate, create QR Code 2d barcode image in .NET applications. Drawing Barcode In None Using Barcode generator for Software Control to generate, create barcode image in Software applications. 2 15 Encoding EAN 128 In None Using Barcode maker for Software Control to generate, create UCC128 image in Software applications. EAN / UCC  13 Generation In None Using Barcode drawer for Software Control to generate, create EAN13 image in Software applications. Amperes
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Generate UPC Code In Java Using Barcode maker for Android Control to generate, create UPCA image in Android applications. Code 128B Generator In Visual C# Using Barcode maker for Visual Studio .NET Control to generate, create Code 128B image in .NET applications. There are a number of useful cases in which a simple functional relationship exists between voltage and current in a nonlinear circuit element For example, Figure 376 depicts an element with an exponential iv characteristic, described by the following equations: i = I0 e v i = I0 v>0 v 0 (345) UPCA Reader In C#.NET Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications. Encoding Code128 In None Using Barcode drawer for Font Control to generate, create Code128 image in Font applications. Figure 376 iv characteristic of exponential resistor
Print EAN / UCC  13 In ObjectiveC Using Barcode creation for iPad Control to generate, create GS1128 image in iPad applications. Paint ANSI/AIM Code 39 In ObjectiveC Using Barcode creation for iPhone Control to generate, create Code 3/9 image in iPhone applications. There exists, in fact, a circuit element (the semiconductor diode) that very nearly satis es this simple relationship The dif culty in the iv relationship of equation 345 is that it is not possible, in general, to obtain a closedform analytical solution, even for a very simple circuit Part I
Circuits
With the knowledge of equivalent circuits you have just acquired, one approach to analyzing a circuit containing a nonlinear element might be to treat the nonlinear element as a load, and to compute the Th venin equivalent of the ree maining circuit, as shown in Figure 377 Applying KVL, the following equation may then be obtained: vT = RT ix + vx (346) Nonlinear element as a load We wish to solve for vx and ix
RT + vT + _ vx ix Nonlinear element
To obtain the second equation needed to solve for both the unknown voltage, vx , and the unknown current, ix , it is necessary to resort to the iv description of the nonlinear element, namely, equation 345 If, for the moment, only positive voltages are considered, the circuit is completely described by the following system: ix = I0 e vx > 0
vT = RT ix + vx
(347) Figure 377 Representation of nonlinear element in a linear circuit
The two parts of equation 347 represent a system of two equations in two unknowns; however, one of these equations is nonlinear If we solve for the load voltage and current, for example, by substituting the expression for ix in the linear equation, we obtain the following expression: vT = RT I0 e vx + vx or vx = vT RT I0 e vx (349) (348) Equations 348 and 349 do not have a closedform solution; that is, they are transcendental equations How can vx be found One possibility is to generate a solution numerically, by guessing an initial value (eg, vx = 0) and iterating until a suf ciently precise solution is found This solution is explored further in the homework problems Another method is based on a graphical analysis of the circuit and is described in the following section Graphical (LoadLine) Analysis of Nonlinear Circuits The nonlinear system of equations of the previous section may be analyzed in a different light, by considering the graphical representation of equation 346, which may also be written as follows: ix = 1 vT vx + RT RT (350) We notice rst that equation 350 describes the behavior of any load, linear or nonlinear, since we have made no assumptions regarding the nature of the load voltage and current Second, it is the equation of a line in the ix vx plane, with slope 1/RT and ix intercept VT /RT This equation is referred to as the loadline equation; its graphical interpretation is very useful and is shown in Figure 378 The loadline equation is but one of two iv characteristics we have available, the other being the nonlineardevice characteristic of equation 345 The intersection of the two curves yields the solution of our nonlinear system of equations This result is depicted in Figure 379 Finally, another important point should be emphasized: the linear network reduction methods introduced in the preceding sections can always be employed to

