Hands-free towel dispenser with EMF controller

摘要: A hands-free towel dispenser comprising a housing with roll of towels inside an interior, sensor for detecting the presence object and generating signal, motor driving dispensing means desired length towel, control circuit receiving signal from sensing controlling supply power to mechanism, battery. The is adapted sample back EMF generated by while determine based on sampled calculated run time operation dispense towel. method wherein generates when sensed. receives supplies battery drive roll. determines speed using signals motor. calculates should as determined stops has time.