barcode fonts for ssrs or In addition, KVL requires that in Software

Print Code 3 of 9 in Software or In addition, KVL requires that

or In addition, KVL requires that
Code39 Recognizer In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Draw Code-39 In None
Using Barcode drawer for Software Control to generate, create Code39 image in Software applications.
(6.31)
Recognizing Code 39 In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Generating USS Code 39 In C#.NET
Using Barcode encoder for .NET Control to generate, create Code 3 of 9 image in .NET applications.
6:32
Create USS Code 39 In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
Drawing USS Code 39 In .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create Code 3/9 image in VS .NET applications.
6:33
Code39 Encoder In Visual Basic .NET
Using Barcode drawer for .NET framework Control to generate, create ANSI/AIM Code 39 image in VS .NET applications.
Bar Code Creator In None
Using Barcode drawer for Software Control to generate, create barcode image in Software applications.
Use of the given approximations reduces the coe cient of veb in (6.33) to unity, so that   hie hie hoe ie hre vcb veb % hfe 1 hfe 1 Now KCL at node C of Fig. 6-1(a) (again with assumed current directions reversed) yields ic hfe ib hoe vce Substituting (6.31), (6.32), and (6.34) into (6.35) and solving for ic give " # " # hfe hoe hie hie hoe h 1 ic re ie hoe vcb hfe 1 hfe 1 2 hfe 1 2 hfe 1 Use of the given approximations then leads to ic % hfe hoe i v hfe 1 e hfe 1 cb
Create GTIN - 128 In None
Using Barcode drawer for Software Control to generate, create USS-128 image in Software applications.
EAN / UCC - 13 Generator In None
Using Barcode maker for Software Control to generate, create European Article Number 13 image in Software applications.
6:34
Draw Code128 In None
Using Barcode generation for Software Control to generate, create USS Code 128 image in Software applications.
Printing Code 39 In None
Using Barcode maker for Software Control to generate, create Code 3 of 9 image in Software applications.
6:35
EAN-8 Supplement 5 Add-On Printer In None
Using Barcode generator for Software Control to generate, create EAN-8 image in Software applications.
Encoding European Article Number 13 In Visual Basic .NET
Using Barcode generation for VS .NET Control to generate, create EAN / UCC - 13 image in .NET applications.
6:36
Reading Barcode In Java
Using Barcode Control SDK for BIRT Control to generate, create, read, scan barcode image in BIRT reports applications.
Making UCC-128 In None
Using Barcode creation for Word Control to generate, create EAN128 image in Microsoft Word applications.
6:37
EAN / UCC - 13 Printer In Java
Using Barcode generator for BIRT Control to generate, create GS1-128 image in Eclipse BIRT applications.
Data Matrix 2d Barcode Drawer In None
Using Barcode printer for Word Control to generate, create Data Matrix 2d barcode image in Microsoft Word applications.
SMALL-SIGNAL MIDFREQUENCY BJT AMPLIFIERS
Read Data Matrix 2d Barcode In VB.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
Data Matrix Recognizer In Visual C#
Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications.
[CHAP. 6
Comparing (6.34) with (6.9) and (6.37) with (6.10), we see that hib hrb hie hfe 1 hie hoe hre hfe 1 hfe hfe 1 6:38 6:39 6:40 6:41
hfb hob
hoe hfe 1
MEASURES OF AMPLIFIER GOODNESS
Ampli ers are usually designed to emphasize one or more of the following interrelated performance characteristics, whose quantitative measures of goodness are de ned in terms of the quantities of Fig. 6-4: 1. 2. 3. 4. 5. 6. Current ampli cation, measured by the current-gain ratio Ai io =iin . Voltage ampli cation, measured by the voltage-gain ratio Av vo =vin . Power ampli cation, measured by the ratio Ap Av Ai vo io =io iin . Phase shift of signals, measured by the phase angle of the frequency-domain ratio Av j! or Ai j!). Impedance match or change, measured by the input impedance Zin (the driving-point impedance looking into the input port). Power transfer ability, measured by the output impedance Zo (the driving-point impedance looking into the output port with the load removed). If Zo ZL , the maximum power transfer occurs.
Zs +
iin +
io + Amplifying circuit
_ Zin
_ Zo
Fig. 6-4
CE AMPLIFIER ANALYSIS
A simpli ed (bias network omitted) CE ampli er is shown in Fig. 6-5(a), and the associated smallsignal equivalent circuit in Fig. 6-5(b).
Example 6.2. In the CE ampli er of Fig. 6-5(b), let hie 1 k; hre 10 4 ; hfe 100; hoe 12 S, and RL 2 k. (These are typical CE ampli er values.) Find expressions for the (a) current-gain ratio Ai , (b) voltage-gain ratio Av , (c) input impedance Zin , and (d) output impedance Zo . (e) Evaluate this typical CE ampli er. (a) By current division at node C, iL 1=hoe hfe ib 1=hoe RL 6:42
CHAP. 6]
SMALL-SIGNAL MIDFREQUENCY BJT AMPLIFIERS
C B +
iL + RL
LL _ Ls
ib hie hre Lce _ E Zin + hfe ib
hoe Lce _ Zo
RL LL _
_ (a)
Fig. 6-5
Ai
hfe iL 100 97:7 ib 1 hoe RL 1 12 10 6 2 103
6:43
Note that Ai % hfe , where the minus sign indicates a 1808 phase shift between input and output currents. (b) By KVL around B; E mesh, vs vbe hie ib hre vce Ohm s law applied to the output network requires that   hfe RL ib 1 kRL vce hfe ib hoe 1 hoe RL Solving (6.45) for ib , substituting the result into (6.44), and rearranging yield Av hfe RL vs vce hie RL hie hoe hfe hre 100 2 103 199:2 1 103 2 103 1 103 12 10 6 100 1 10 4 6:46 6:44
6:45
Observe that Av % hfe RL =hie , where the minus sign indicates a 1808 phase shift between input and output voltages. (c) Substituting (6.45) into (6.44) and rearranging yield Zin hre hfe RL vs 1 10 4 100 2 103 hie 1 103 980:5  ib 1 hoe RL 1 12 10 6 2 103 6:47
Note that for typical CE ampli er values, Zin % hie . (d) We deactivate (short) vs and replace RL with a driving-point source so that vdp vce . Then, for the input mesh, Ohm s law requires that ib hre v hie dp 6:48
However, at node C (with, now, ic idp ), KCL yields ic idp hfe ib hoe vdp Using (6.48) in (6.49) and rearranging then yield Zo vdp 1 1 500 k idp hoe hfe hre =hie 12 10 6 100 1 10 4 = 1 103 6:50 6:49
Copyright © OnBarcode.com . All rights reserved.