## Transmission Lines

2015-03-06 17:24
Introduction A transmission line is a system of conductors connecting one point to another and along which electromagnetic energy can be sent. Thus telephone lines and power distribution li… Read More

## Attenuators

2015-03-06 16:18
Introduction An attenuator is a device for introducing a specified loss between a signal source and a matched load without upsetting the impedance relationship necessary for matching. The l… Read More

## Modulation

2015-03-06 16:16
Introduction to Modulation The transmission of information such as speech, music and data over long distances requires the use of a carrier channel. It is common practise to ‘carry&rs&hell…Read More

## Filter Networks

2015-03-06 16:15
Introduction A filter is a network designed to pass signals having frequencies within certain bands (called passbands) with little attenuation, but greatly attenuates signals within other b… Read More

## Field Theory

2015-03-06 15:40
Introduction Electric fields, magnetic fields and conduction fields (i.e. a region in which an electric current flows) are analogous, i.e. they all exhibit similar characteristics. Thus the… Read More

## Dielectrics And Dielectric Loss

2015-03-06 15:34
Electric Fields, Capacitance and Permittivity Any region in which an electric charge experiences a force is called an electrostatic field. Electric fields, Coulombs law, capacitance and per… Read More

## A Numerical Method Of Harmonic Analysis

2015-03-06 15:03
Introduction Many practical waveforms can be represented by simple mathematical expressions, and, by using Fourier series, the magnitude of their harmonic components determined. For wavefor… Read More

## Maximum Power Transfer Theorems And Impedance Matching

2015-03-06 14:55
Maximum Power Transfer Theorems A network that contains linear impedances and one or more voltage or current sources can be reduced to a The´venin equivalent circuit as shown in chapt… Read More

## Delta-star And Star-delta Transformations

2015-03-06 14:53
Introduction By using Kirchhoff’s laws, mesh-current analysis, nodal analysis or the super- position theorem, currents and voltages in many network can be determined as shown in chapt… Read More

## The´venin’s And Norton’s Theorems

2015-03-06 14:52
Introduction Many of the networks analysed in Chapters 70 to 72 using Kirchhoff’s laws, mesh-current and nodal analysis and the superposition theorem can be analysed more quickly and… Read More

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