Toothbrush with automatic actuation

摘要: The power toothbrush includes a handle (12) and brushhead (18) having conductive electrode sensing element (25) therein. driver assembly (14) for the sensor system (28) measuring capacitance between on/in an electronics ground (27) in of toothbrush. A microprocessor/controller (26) is programmed to determine whether measured above threshold value, which indicates that near or within mouth user. microprocessor actuates operation when value value.