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barcode reader vb.net codeproject Operational Ampli ers in Software
12 QR Code Scanner In None Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications. QR Drawer In None Using Barcode maker for Software Control to generate, create QRCode image in Software applications. Operational Ampli ers
QR Code Scanner In None Using Barcode scanner for Software Control to read, scan read, scan image in Software applications. Printing Denso QR Bar Code In C#.NET Using Barcode printer for Visual Studio .NET Control to generate, create QR image in .NET applications. where ZF (j ) = R2  1 R2 R2 = = j C 1 + j CR2 1 + j / 0 L R1 = R1 (1 + j / 0 ) Creating Quick Response Code In .NET Framework Using Barcode encoder for ASP.NET Control to generate, create QRCode image in ASP.NET applications. Quick Response Code Maker In Visual Studio .NET Using Barcode creator for .NET framework Control to generate, create QR Code 2d barcode image in VS .NET applications. = R1 + j L = R1 1 + j Thus, the gain of the lter is: A(j ) = Make QR Code ISO/IEC18004 In VB.NET Using Barcode generator for .NET framework Control to generate, create QRCode image in .NET applications. Encoding ANSI/AIM Code 128 In None Using Barcode creator for Software Control to generate, create Code 128 image in Software applications. R2 1+j / 0 Create Barcode In None Using Barcode creator for Software Control to generate, create barcode image in Software applications. Universal Product Code Version A Maker In None Using Barcode creator for Software Control to generate, create UPC A image in Software applications. R1 (1 + j / 0 ) Printing Bar Code In None Using Barcode generator for Software Control to generate, create bar code image in Software applications. Printing GS1128 In None Using Barcode maker for Software Control to generate, create UCC.EAN  128 image in Software applications. R2 /R1 (1 + j / 0 )2 Making UPCE In None Using Barcode generation for Software Control to generate, create UCC  12 image in Software applications. Print Linear In VB.NET Using Barcode creation for VS .NET Control to generate, create Linear 1D Barcode image in .NET framework applications. Comments: Note the similarity between the expression for the gain of the lter of Figure 1228 and that given in equation 1250 for the gain of a ( rstorder) lowpass lter Clearly, the circuit analyzed in this example is also a lowpass lter, of second order (as the quadratic denominator term suggests) Figure 1229 compares the two responses in both linear and dB (Bode) magnitude plots The slope of the dB plot for the secondorder lter at higher frequencies is twice that of the rstorder lter ( 40 dB/decade versus 20 dB/decade) We should also remark that the use of an inductor in the lter design is not recommended in practice, as explained in the above section, and that we have used it in this example only because of the simplicity of the resulting gain expressions Section 153 introduces design methods for practical highorder lters Creating Data Matrix ECC200 In VB.NET Using Barcode creation for Visual Studio .NET Control to generate, create DataMatrix image in Visual Studio .NET applications. Reading Barcode In Java Using Barcode decoder for Java Control to read, scan read, scan image in Java applications. Comparison of lowpass active filters : Response of filter of Figure 1228 : Response of filter of Example 125 10 Amplitude ratio 8 dB 6 4 2 0 10 3 50 0 50 Comparison of lowpass active filters (dB plot) : Response of filter of Figure 1228 : Response of filter of Example 125 Code 39 Full ASCII Encoder In None Using Barcode encoder for Office Word Control to generate, create Code 39 Extended image in Office Word applications. Create Barcode In Java Using Barcode generator for Android Control to generate, create barcode image in Android applications. 100 10 2 10 1 100 101 102 Radian frequency (logarithmic scale) 103 150 10 3 10 2 10 1 100 101 102 Radian frequency (logarithmic scale) 103 Barcode Generator In Java Using Barcode generation for BIRT reports Control to generate, create barcode image in BIRT reports applications. Matrix Barcode Drawer In C#.NET Using Barcode generator for VS .NET Control to generate, create 2D Barcode image in Visual Studio .NET applications. Figure 1229 Comparison of rst and secondorder active lters
Check Your Understanding
127 Design a lowpass lter with closedloop gain of 100 and cutoff (3dB) frequency equal to 800 Hz Assume that only 001 F capacitors are available Find RF and RS 128 Repeat the design of Check Your Understanding Exercise 127 for a highpass lter with cutoff frequency of 2,000 Hz This time, however, assume that only standard values of resistors are available (see Table 21 for a table of standard values) Select the nearest component values, and calculate the percent error in gain and cutoff frequency with respect to the desired values 129 Find the frequency corresponding to attenuation of 1 dB (with respect to the maximum value of the amplitude response) for the lter of Check Your Understanding Exercise 127 1210 What is the dB gain for the lter of Example 125 at the cutoff frequency, 0 Find the 3dB frequency for this lter in terms of the cutoff frequency, 0 , and note that the two are not the same Part II
Electronics
INTEGRATOR AND DIFFERENTIATOR CIRCUITS
In the preceding sections, we examined the frequency response of opamp circuits for sinusoidal inputs However, certain opamp circuits containing energystorage elements reveal some of their more general properties if we analyze their response to inputs that are timevarying but not necessarily sinusoidal Among such circuits are the commonly used integrator and differentiator; the analysis of these circuits is presented in the following paragraphs The Ideal Integrator Consider the circuit of Figure 1230, where vS (t) is an arbitrary function of time (eg, a pulse train, a triangular wave, or a square wave) The opamp circuit shown provides an output that is proportional to the integral of vS (t) The analysis of the integrator circuit is, as always, based on the observation that iS (t) = iF (t) where iS (t) = vS (t) RS (1264) Figure 1230 Opamp integrator
CF iF (t) iS(t) vS(t) (1263) + vout(t) It is also known that dvout (t) iF (t) = CF (1265) dt from the fundamental de nition of the capacitor The source voltage can then be expressed as a function of the derivative of the output voltage: 1 dvout (t) vS (t) = RS C F dt 1 RS CF t (1266) By integrating both sides of equation 1266, we obtain the following result: vout (t) = vS (t ) dt (1267) This equation states that the output voltage is the integral of the input voltage There are numerous applications of the opamp integrator, most notably the analog computer, which will be discussed in Section 125 The following example illustrates the operation of the opamp integrator

