(计算题） 电路如图所示 ， ， ， 与 同相，试求 ， ， 及 。http://mooc.chaoxing.com/ananas/latex/p/2037

A . 100 B . 50 C . 1 D . 0

如图2.4.3所示电路中，<img src='https://img2.soutiyun.com/ask/2019-06-20/929868155228174.png' /><img src='https://img2.soutiyun.com/ask/2019-06-20/929868169658199.png' />

电压放大电路模型如图题1.4.1(主教材图1.4.2a)所示，设输出开路电压增益<img src='https://img2.soutiyun.com/ask/2020-06-28/962192106678424.png' />试分别计算下列条件下的源电压增益<img src='https://img2.soutiyun.com/ask/2020-06-28/962192113240799.png' /> <img src='https://img2.soutiyun.com/ask/2020-06-28/96219212671457.png' /> <img src='https://img2.soutiyun.com/ask/2020-06-28/962192178350523.jpg' />

电路如图题9-2所示,已知is(t)= cost A,试计算稳态时:(1)电感储能的平均值;(2)电容储能的平均值;(3)在一循环内电阻消耗的能量(t=0到t=2π)。 <img src='https://img2.soutiyun.com/ask/2020-07-24/964436277156786.png' />

电路如图题 10-6所示,已知<img src='https://img2.soutiyun.com/ask/2020-07-24/964447303300445.png' />,试求u(t)。 <img src='https://img2.soutiyun.com/ask/2020-07-24/964447314547089.png' />

<img src='https://img2.soutiyun.com/ask/2020-12-02/975775165678232.png' />

一单电源互补对称功放电路如图题8.4.1所示，设v_i为正弦波，R_L=8Ω，管子的饱和压降V_CES可忽略不计。试求最大不失真输出功率P_om(不考虑交越失真)为9W时，电源电压V_CC至少应为多大？ <img src='https://img2.soutiyun.com/ask/uploadfile/5517001-5520000/8d33cfe0d02a1c1cff03e7f5269eaf1a.jpg' />

电路如图6-25所示，在555定时器芯片的外部(5)脚接了一个电位器，求电压比较器C₁的同相输入端电位和电压比较器C₂的反相输入端电位。 <img src='https://img2.soutiyun.com/ask/2020-09-06/968244339815774.png' />

计算题：如图D-8所示正弦交流电路，试求电路发生谐振时，电源的角频率<img src='https://img2.soutiyun.com/shangxueba/ask/18276001-18279000/18277262/2015052011431518944.png' />应满足的条件。 <img src='https://img2.soutiyun.com/shangxueba/ask/18276001-18279000/18277262/2015052011424718663.png' />

<img src='https://img2.soutiyun.com/ask/2020-06-28/962202187481013.png' />

<img src='https://img2.soutiyun.com/ask/2020-07-01/962449727808661.jpg' /><img src='https://img2.soutiyun.com/ask/2020-07-01/962449733660996.jpg' />

⑴电路的等效电阻R。 ⑵各电阻上的电压各为多少？ ⑶电路的端电压U。 <img src='https://img2.soutiyun.com/shangxueba/ask/18801001-18804000/18802745/201411250954519660.jpg' />

t≥0时电路如图题12-2所示，已知i_L(0_)=-2A，u_c(0_)=2V，试求u_c(t)，t≥0。 <img src='https://img2.soutiyun.com/ask/2020-08-31/967733127072818.png' />

<img src='https://img2.soutiyun.com/ask/2020-12-25/977735539297996.png' />

电路如图1-73所示，换路前已处于稳态，试求换路后(t≥0)的uc。 <img src='https://img2.soutiyun.com/ask/2020-06-11/960741665697309.png' />

电路如图16.32所示。知<img src='https://img2.soutiyun.com/ask/2020-10-06/970865881862183.png' /><img src='https://img2.soutiyun.com/ask/2020-10-06/970865902381357.png' />试求:u_o. <img src='https://img2.soutiyun.com/ask/2020-10-06/970865916234149.png' />

电路如图题6-24所示,试求i(t)的零状态响应;若<img src='https://img2.soutiyun.com/ask/2020-10-15/971629862509378.jpg' />,试求i_L(t)的零输入响应.如果i_L(0_-)=-1A,求i_L(t)的全响应. <img src='https://img2.soutiyun.com/ask/2020-10-15/971629892986121.jpg' />

<img src='https://img2.soutiyun.com/ask/2020-07-24/964433301424584.png' />