In electronic detectors such as photomultipliers and television tubes, noise manifests itself as random fluctuations in the output current . 对于光电倍增管,电视摄像管之类的电子探测器,噪声则表现为输出电流的随机起伏。
The limitations of this scheme became quite apparent with the introduction of detectors such as the plumbicon, image orthicon and vidicon . 这个方法的局限性在引进诸如氧化铅光导管摄像管,超正析象和光导摄像管之类的探测器之后变得很明显。
Radiation image pickup tube 辐射图像摄像管
Slow scan vidicon 慢扫描光导摄像管
The energy density of the spot was 100 times the typical saturation level of the vidicons 光点的能量密度为光导摄像管典型饱和电平的100倍
Harmonized system of quality assessment for electronic components - generic specification : camera tubes 电子元器件质量评定协调体系.通用规范.摄像管
Harmonized system of quality assessment for electronic components - blank detail specification : camera tubes 电子元器件质量保证协调体系.空白详细规范.摄像管
The television camera also looks at a scene as a series of dots ; each dot of light is translated by the camera tube into an electronic signal 电视摄像机也是把景象看成一系列的点,每一个光点都被摄像管转换成一个电子信号。
In place of the single camera tube of the black and white camera , it has three tubes - - one for each of these colours - - and the signals produced by them correspond to the amount of each colour 在黑白摄像机的单摄像管的地方,彩色摄像机有三根管? ?一根对一种颜色? ?它们产生的信号与每种颜色的数量一致。
In both radio and television receivers , once the basic signals have been separated from the carrier wave they are fed to a loudspeaker or a display device ( usually a cathode - ray tube ) , where they are converted into sound and visual images , respectively 在无线电和电视两个接收器中,一旦基本信号与载体电波分离,即被供于扩音器或显示设备(通常是阴极摄像管) ,在那里它分别被转换成声音和可视图像。