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1. 发明授权

US3961242A Emission testing circuit for color cathode ray tubes 失效
标题翻译：彩色阴极射线管发射测试电路
公开(公告)号：US3961242A
公开(公告)日：1976-06-01
申请号：US573374
申请日：1975-04-30
申请人： Gus C. Rose
发明人： Gus C. Rose
IPC分类号： G01R31/25 , G01R31/24
CPC分类号： G01R31/257
摘要： The emission of the various electron guns of a color cathode ray tube are measured and indicated preferably by a time sharing multiplexing technique where bright intensity producing emission generating voltages are fed between th cathode and control or accelerator electrodes of the various electron guns preferably in rapidly repeated sequence. The switching rate is preferably many times per second so the emission current values are displayed as steady indications on the faces of current meters with meter movements which respond to the average emission curent of the associated electron gun. A quick and convenient means for determining whether or not the ratio of the highest and lowest emission measurements fall within an acceptable range is provided by means which proportionately reduce the conduction periods of the electron guns, so the highest or lowest emission measurement falls along one margin of a band on the scale of the associated meter face whose opposite margin is at a value which indicates the limit of an acceptable highest to lowest emission ratio.
摘要翻译：测量彩色阴极射线管的各种电子枪的发射，并且优选地通过时间分配复用技术来表示，其中，在各种电子枪的阴极和控制或加速器电极之间输入亮度产生发射电压的亮度优选快速重复序列。切换速率优选为每秒多次，因此发射电流值被显示为电流计的表面上的稳定指示，其具有响应于相关联的电子枪的平均发射电流的计量运动。用于确定最高和最低发射测量值的比率是否落在可接受范围内的快速方便的手段是通过比例地减少电子枪的传导周期的手段来提供的，因此最高或最低的发射测量沿着一个边缘落下在相关仪表的刻度上的带的相对边距是指示可接受的最高到最低发射比的极限的值。

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