高精密电阻器是什么?
很多工程---都认为,精度高的电阻就是高精密电阻器,百度百科也错误地收录了这样的信息,以至于以讹传讹,误导了大家。
what is high precision resistors? almost all techniciens think the resistors with tight tolerance are high precision resistors. it is not correct since the real meaning of high precision resistors are the resistors with high stability since without stability the tolerance is meaningless!
high precision resistors are made by professional manufacturers instead of sorting by most manufacturers/dealers from normal resistors since there is no real requeset of stability for normal reistors!
高精密电阻器真正的定义应该是具有高稳定性的电阻器,高精密电阻器的电阻阻值精度可以是0.01%,0.05%, 甚至可以是1%,但是,高精密电阻器的稳定性指标不论其实际精度都是一样的,不论是
经过连续多天的阴雨连绵,2016.01.24日终于开始放晴了!
盛雷城精密电阻有限公司位于江西省赣州市的市场基地迎来了灿烂的阳光,迎来了久违的无比清新的空气和湛蓝的天空,清澈的视野,真是太棒了!
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金属膜精密电阻的主体通常为圆柱形;线绕精密电阻则有圆柱形、扁柱形和长方框架形几种;金属箔精密电阻则常呈方块形或片形。线绕精密电阻的匝数较多时,往往采用无感绕制法绕制,正向绕制的匝数和反向绕制的匝数相同,以尽量减小分布电感。长方框架形的线绕精密电阻通常是设备制造厂根据需要专门定制的,常用于仪器仪表。
--- precision resistor makes ultra precision resistors espe---lly metal film resistors&resistor networks with tolerance less than 0.01%!
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