【单选题】【消耗次数:1】
差分放大电路的长尾电阻的主要功能是( ),而提高共模抑制比。
抑制共模信号
抑制差模信号
放大共模信号
参考答案:
复制
纠错
相关题目
【判断题】 差分放大电路能够抑制差模信号。
①  正确
②  错误
【判断题】 差分式放大电路能放大直流和交流信号,它对差模信号具有放大能力,它对共模信号具有抑制能力。
①  正确
②  错误
【判断题】 差分放大电路能够放大共模信号。
①  正确
②  错误
【判断题】 差分放大电路输入端加上大小相等、极性相同的两个信号,称为共模信号。
①  正确
②  错误
【判断题】 差分放大电路输入端加上大小相等、极性相反的两个信号,称为差模信号。
①  正确
②  错误
【单选题】 差动放大电路中,所谓差模信号是指两个输入信号电压()。
①  大小相等,极性相同
②  大小不等,极性相同
③  大小相等,极性相反
【单选题】 变压器隔离是利用变压器把( )电路与数字信号电路隔离开来,以使共模干扰电压不成回路,从而抑制共模干扰。
①  模拟信号
②  数字信号
③  连续信号
④  离散信号
【判断题】 差模输入信号是指两输入信号大小相等。
①  正确
②  错误
【单选题】 差分放大电路由双端输入变为单端输入,差模电压放大倍数()。
①  增加一倍
②  减小一半
③  不变
④  按指数规律变化
【判断题】 差分放大电路能够抑制零点漂移。
①  正确
②  错误
随机题目
【单选题】 23. Realizing that he hadnt enough money and ______ to borrow from his father, he decided to sell his watch.
①  not wanted
②  not to want
③  not wanting
④  . wanting not
【单选题】 20.The girl’s voice was so low that we could ________ hear her.
①  seldom
②  almost
③  only
④  hardly
【单选题】 7.When we go abroad we are always being ______ around like a group of mentally disabled people.
①  guided
②  .ushered
③  introduced
④  displayed
【单选题】 9. All correspondence ______ to the editor should be sent by airmail.
①  addressed
②  sent
③  signaled
④  went
【单选题】 11.Since family ______children’s character, he encouraged parents to teach children reading.
①  formed
②  shaped
③  built
④  made
【单选题】 16.It was by train _____ we reached there.
①  which
②  that
③  what
④  how
【单选题】 17. It was the headmaster _____ gave us the leave to go to the concert.
①  who
②  whom
③  that
④  which
【单选题】 15.It was on the day my first son was born _____ I put them in the soil.
①  when
②  who
③  that
④  where
【单选题】 19.Our school library is ________ closed for repairs.
①  shortly
②  quickly
③  temporarily
④  rapidly
【单选题】 24. They are teachers and dont realize ______ to start and run a company.
①  what it takes
②  what takes it
③  what they take
④  what takes them