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1. 发明授权

US3821845A Method of making a linear film potentiometer having a circular configuration 失效
标题翻译：制造具有圆形配置的线性薄膜电位器的方法
公开(公告)号：US3821845A
公开(公告)日：1974-07-02
申请号：US26727772
申请日：1972-06-29
申请人： SPRAGUE ELECTRIC CO
发明人： HUKEE V , TRAVIS W
IPC分类号： H01C17/242 , H01C17/00 , G01R17/02
CPC分类号： H01C17/242 , Y10T29/49004 , Y10T29/49099
摘要： Extreme linearity of a film potentiometer is instantaneously obtained by a computerized sectioning method. A circular film potentiometer track is sectioned off for the purposes of trimming the track, the number of sections being determined by the extent of linearity desired. A computerized contact point board programmed to produce a particular linearity for the circular track is then brought into contact with the track. On contact, current begins to flow through the resistance track producing a particular voltage at each sectionalized contact point area thereon. The voltage produced at each contact area, with reference to ground, is instantaneously compared to an electronically generated desired voltage. Every time the voltage across a particular section varies below the standard or desired comparison voltage, a laser beam cuts radially into the potentiometer track until the desired voltage is achieved. The laser beam moves along through each section of the track and the procedure advantageously provides reproducible results therefor, instantaneously.
摘要翻译：通过电脑切片方法即时获得薄膜电位器的极限线性度。为了修整轨道而将圆形薄膜电位器轨道分开，段的数量由所需的线性程度确定。编程为产生圆形轨道的特定线性度的计算机化接触点板然后与轨道接触。在接触时，电流开始流过电阻轨迹，在其上的每个分段接触点区域产生特定的电压。每个接触区域相对于地面产生的电压与电子产生的期望电压相比较。每当特定部分的电压变化到标准或期望的比较电压以下时，激光束径向切断到电位器轨道，直到达到所需的电压。激光束沿着轨道的每个部分移动，并且该过程有利地立即提供可重现的结果。

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