某电路的输入波形UI和输出波形UO如图所示，则该电路是(    )55dd0483094c93fc983ba3653e013175.jpg

A . t1 B . t2 C . t3 D . t4

A .https://assets.asklib.com/psource/2015110109594245135.jpg B .https://assets.asklib.com/psource/2015110109595571432.jpg C .https://assets.asklib.com/psource/201511011000086760.jpg D .https://assets.asklib.com/psource/2015110110002898352.jpg

A . 施密特触发器 B . 反相器 C . 单稳态触发器 D . JK触发器

A .https://assets.asklib.com/psource/2015110110040637807.jpg B .https://assets.asklib.com/psource/2015110110042011959.jpg C .https://assets.asklib.com/psource/2015110110045042416.jpg D .https://assets.asklib.com/psource/2015110110043822770.jpg

A . 出现了饱和失真，应调大R B . 出现了饱和失真，应调小R C . 出现了截止失真，应调大R D . 出现了截止失真，应调小R

A .https://assets.asklib.com/psource/2015103016374077578.jpg B .https://assets.asklib.com/psource/2015103016374077578.jpg C .https://assets.asklib.com/psource/2015103016374077578.jpg D .https://assets.asklib.com/psource/2015103016374077578.jpg

A .https://assets.asklib.com/psource/2015103016224075014.jpg B .https://assets.asklib.com/psource/2015103016225126155.jpg C .https://assets.asklib.com/psource/2015103016230236526.jpg D .https://assets.asklib.com/psource/2015103016231320493.jpg

A . 相同 B . 相反 C . 相差π／2 D . 无法判断

A . 出现了饱和失真，应调大RB B . 出现了饱和失真，应调小RB C . 出现了截止失真，应调大RB D . 出现了截止失真，应调小RB

A .https://assets.asklib.com/psource/2015110110224381410.jpg B .https://assets.asklib.com/psource/2015110110225578861.jpg C .https://assets.asklib.com/psource/2015110110231370645.jpg D .https://assets.asklib.com/psource/2015110110232528824.jpg

<img src='https://img2.soutiyun.com/shangxueba/ask/4455001-4458000/4455766/ct_jggysbnjxj_jggysbnjxchoose_0443(106).jpg' /> A．1.5V B．-0.7V C．-15.6mV D．7.5mV

<img src='https://img2.soutiyun.com/shangxueba/ask/18381001-18384000/18381704/2015110111311967106.jpg' /> A．<img src='https://img2.soutiyun.com/shangxueba/ask/18381001-18384000/18381704/2015110111313843578.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18381001-18384000/18381704/2015110111315151618.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18381001-18384000/18381704/2015110111320582310.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/18381001-18384000/18381704/2015110111323019711.jpg' />

A.同相 B.反相 C.相差90° D.不变

某电力电子变换电路输出电压波形如图所示。则该电路电路和负载类型的描述为()。 <img src='https://img2.soutiyun.com/ask/2019-10-30/941298968519728.png' /> ：A、单相半波整流纯电阻负载 B、单相桥式整流电感性负载 C、单相半波整流电感性负载 D、单相桥式整流纯电阻负载

在图20.32所示两个电路中，当控制端存在<img src='https://img2.soutiyun.com/latex/latex.action' />两种情况时，试求输出Y的波形。输入A和B的波形如图中所示。 <img src='https://img2.soutiyun.com/ask/uploadfile/5457001-5460000/e4d1d7d441da99856c8b60f88709eed1.png' />

A．A．增大RB B．B. 减小RB C．C. 增大RC D．D. 减小RC

A．同相 B．反相 C．相差90° D．不定

使用恒压降模型(VD=0.7 V)，二极管电路如图题3.4.7a所示，设输入电压UI(t)波形如图b所示，在0<t<5 ms的时间间隔内，试绘出uo(t)的波形，设二极管是理想的。 <img src='https://img2.soutiyun.com/ask/2020-06-28/962206345666847.png' />

电路的输入A、B、C和输出X、Y的波形如图10.91(a)所示,列出真值表,写出表达式,化简为最简式,分析其逻辑功能,并分别用基本逻辑门电路、四选一MUX数据选择器(如图10.91(b))和3-8译码器(如图10.91(c))实现此逻辑电路. <img src='https://img2.soutiyun.com/ask/2021-02-25/983110007893928.png' />

<img src='https://img2.soutiyun.com/ask/2020-06-30/962361270326825.png' />

<img src='https://img2.soutiyun.com/ask/2020-07-22/964276665445964.png' />