1 Find F(s) if f(t) = (a)(t-3);(b)4t u(t-3); (c)4 cos to(t-3). 2 Obtain partial-fraction expansions for each of the following rational functions, and find the corresponding time functions:

6.1 PWM控制的基本原理 6.2 PWM逆变电路及其控制方法 6.3 PWM跟踪控制技术 6.4 PWM整流电路及其控制方法

1 Find the matrix equation in the circuit of Fig. 16-12 by nodal analysis method. Assume that each branch admittance of the circuit is 1S

1 For the circuit given in Fig. 18-14, the R C2, fc are given find the switched capacitor equivalent

In this chapter we shall show how the phasor methods developed to analyze circuits operating under sinusoidal steady- state conditions can be applied to the study of three-phase ac circuits

Tellegen's theorem 1: Consider a lumped network n consisting of N+1 nodes and B branches, let=[ b2DbB,i=. Where

Augmented loop matrix +1when branch b; is in loop lk and has the same orientation; B. =]; ={-1 when branch b; is in loop lk and has the opposite orientation; when branch; is not in loop lk

You are asked to set off from any piece of the lands and pass through all the seven bridges under the condition that each bridge can be used only once, so that you can finally return to the starting point

6.1 裁剪 6.2 过渡 6.3 齐边 6.4 打断 6.5 平移 6.6 旋转 6.7 镜像 6.8 拉伸 6.9 比例缩放 6.10 阵列

When initial energy is present in a circuit, the Laplace transform method may be used to obtain the complete response. The first is the more fundamental, for it involves writing the differential equations for the network and then taking the Laplace transform of those equations