2、输入、输出的波形如图所示，输出输入的逻辑关系是（ ）。A或逻辑 B与逻辑 C 非逻辑ac24d6346ef7a6f44a40cdcce271a4ac.png

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

A . “1” B . “0” C . 任意

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 . A、静态工作点太低，ib的负半周进入截止区 B . B、静态工作点太高，ib的正半周进入饱和区 C . C、静态工作点合适，ib值过大而失真

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 . A、P=A*B*CB . B、P=https://assets.asklib.com/psource/2014101810345795401.png

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 . 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

<img src='https://img2.soutiyun.com/ask/2020-09-06/96823627984177.png' />

<img src='https://img2.soutiyun.com/ask/2020-09-14/96897234244674.png' />

画出图题5-5所示的边沿触发D触发器输出端Q端的波形，输入端D与CLK的波形如图所示。(设Q初始状态为0) <img src='https://img2.soutiyun.com/ask/2020-02-13/950440477456028.png' />

若反相输出的施密特触发器的输入信号波形如图所示，试画出输出信号的波形。施密特触发器的转换电平U_T+、U_T-已在输入信号波形图上标出。 <img src='https://img2.soutiyun.com/ask/uploadfile/5478001-5481000/2a67030dbd2be38455b44ec3fb1c3ed9.png' />

<img src='https://img2.soutiyun.com/ask/uploadfile/5469001-5472000/728fa2f4a937a6b22cd60a27fad220cf.png' />

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' />

<img src='https://img2.soutiyun.com/shangxueba/ask/19074001-19077000/19074291/201506111219142572.jpg' /> A．静态工作点太低，ib的负半周进入截止区 B． 静态工作点太高，ib的正半周进入饱和区 C． 静态工作点合适，ib值过大而失真

<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110315234892.jpg' /> A．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110321023485.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110322177199.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110324894811.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363426/2015110110330118892.jpg' />

<img src='https://img2.soutiyun.com/ask/2020-09-06/968237247418112.png' />

<img src='https://img2.soutiyun.com/ask/2020-11-16/97440849814341.png' />

A．减小Rc B．减小 C．减小Vcc D．换用β小的管子