English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
新浪网
3月
共源 JFET 放大器
共源 JFET 放大器使用结型场效应晶体管(JFET)作为主要的有源器件,具有高输入阻抗的特性。与共射 BJT 放大器相比,共源 JFET 放大器有一个重要优势,即场效应管具有极高的输入阻抗,并且输出噪声低,这使其非常适合用在需要处理极小输入电压信号的放大 ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果
今日热点
New ICE shooting video
Economy added 50K jobs
Argentina has repaid US
Blocked from freezing funds
Suspended 80 games
UNC offensive coordinator
Prolific Broadway actor dies
Today in history: 1964
Rourke surrenders shotgun
Judge dismisses lawsuit
Sues over offshore wind halt
Philippines landfill collapse
Winter storm hits UK, France
CA completely drought-free
US to provide $45M in aid
To take $6 billion charge
Released from prison early
To build $20B data center
Suspect pleads not guilty
Signs 3 nuclear power deals
Pushes crackdown on fraud
NCAA denies waiver request
WNO leaving Kennedy Center
SCOTUS will hear appeal
Woman killed in shark attack
Indonesia blocks access
Prosecutors summon owners
To meet big oil executives
反馈