BS 9133 N001 to 003-1975 单旋非线绕小功率旋转电位器详细规范.与电阻元件绝缘的主轴、主轴和密封仪表板或容器、主轴和密封仪表板.全面评估级
Detail specification for single turn low power non-wirewound rotary potentiometers - Spindle insulated from resistance element, spindle and panel sealed or container, spindle and panel sealed - Full assessment level
Preferred resistance values 1.0, 2.2 and 4.7 in each decade; resistance laws - linear, non-linear and reverse non-linear; selection tolerances <+OR->20%, <+OR->10%; rated dissipation - spindle and panel sealed types 0.25 W and 1.375 W (linear law) - container, spindle and panel sealed 0.7 W (linear law) (rated dissipation halved for logarithmic and reverse logarithmic laws); temperature characteristic of resistance <+OR->6.5%. Range of spindle and mounting details in appendices.