14-5 Waveform synthesis Synthesis is a combination of so as form a whole

1.A functionf(t) is said to be even iff(t)=(-t). They are symmetrical with respect to the vertical axis. (bn=0)

current of one port into the voltage of the otherport and vice verse. U1 =-ais \2 =ai..gyration constant

the open-circuit reverse voltage gainthe open-circuit transfer admittancethe short-circuit transfer impedancethe short-circuit reverse current gain

are parameters The matrix from of parameter equations:

parameters equivalents admittance parameters. They parameter equivalents matrix form:

Three-phase sources have three Q terminals called the line terminals(a, b,c). + Neutral connection--n an b+V n bn Balanced three-phase sources may

1.1可编程序控制器的由来 可编程序控制器( Programmable Controller)简称为PC 可编程序逻辑控制器( Programmable Logic Cntroller) 简称为PLC

An ideal transformer is a useful approximation of a very tightly coupled transformer in which the coefficient of coupling is almost unity and both the primary and secondary inductive reactance are extremely large in comparison with the terminating impedance

华侨大学：《信号与系统》课程教学资源（PPT课件讲稿，机电版）例8-5-3