We define transfer function H(s) as a ratio of the Laplace transform of system output (or response)(s) to the Laplace transform of the input(or forcing function)v(s) when all initial conditions are zero, then

15-6 The partial-fraction-expansion method

15-4 Laplace transform of some simple time function 1. The unit step function

We define the unit impulse as a function of time which is zero when its argument, generally (t-o), is less than zero; which is also zero when argument is greater than zero; which is infinite when its argument is zero; and which has unit area

14-8 Definition of the Fourier transform The exponential form of the Fourier series

14-6 Effective values and power The effective or rms value of the function f(t) is

14-4 Line spectrum A plot showing each of harmonic amplitudes in the wave is called the line spectrum

S14-2 Exponential Fourier series f(t)=+ cosot+a2 cos 2ot+.] sinot+ b2 sin

13-8nic(Negative-impedance- converter(负阻抗变换器))

13-6 Interconnection of two-ports 1. Series connection