THE BASICS OF CAPACITIVE TOUCH-SENSING TECHNOLOGY

摘要

The recent success of the capacitive-sensor scroll wheel, now being used in quite a few devices, has given this technology an edge over other touch-sense technologies.rnWhen any object with capacitive characteristics-such as a fin ger-comes close to a capacitive touch sensor, it acts as another capacitor due to its dielectric nature. This varies the effective capacitance of the system, which is used to detect the touch.