无机械磨损的密立根油滴仪

Millikan oil drops instrument without mechanical abrasion

开发了数字控制系统用于密立根油滴仪,用光电编码器替代电位器进行平衡电压的调节,用触摸屏上的按键替代机械按键.改装后的密立根油滴仪实现了完全无机械磨损的数字化控制,而且测量精度不受环境温度、湿度等因素的影响.

An electrical system for Millikan oil drops instrument was developed, in which an pho- toelectric encoder was used for voltage regulation to control the balance vollage, and the touch panel combined with single chip control was used to replace the mechanical key. Thus, the modified Milli- kan oil drops instrument realized digitalization and abrasion free, and the environmental factors, such as temperature or humidity, had little effects on the measurement results.