Verification of fan operation

作者： Joseph James Judkins , Donald E. Alfano , Chuong Nguyen , Jerry Collings , Sang T. Ngo

DOI:

关键词: Engineering 、 Terminal (electronics) 、 Sense (electronics) 、 Driver circuit 、 Integrated circuit 、 Signal 、 Filter (video) 、 Commutation 、 Electronic engineering 、 Capacitance

摘要: An apparatus for sensing the rotation of a brushless DC fan includes and sense/driver circuit capacitance. The is coupled to receive sense input signal including fluctuating electrical effect caused by commutation events. processes generate output indicative operation. an integrated circuit. pin, ground return driver circuit, filter portion, pin level detecting capacitance provide with portion. control terminal, first current handling terminal second pat. portion at least one terminals providing generates from signal. derives events responsive receiving pin.