1
Toshio Inaji, Hiroshi Minakuchi, Yoshiaki Igarashi: Driving circuit for brushless DC motors. Matsushita Electric Industrial, Wenderoth Lind & Ponack, December 30, 1986: US04633150 (34 worldwide citation)

A driving circuit for a brushless DC motor having a small amount of torque ripple comprises a magnetic pole position detecting circuit for detecting positions of magnetic poles of a rotor magnet and delivering polyphase signals indicating the positions, a rectifier adder circuit for producing a sum ...


2

3
Inaji Toshio: Driving circuit for brushless DC motors. Matsushita Electric, DONG JIANGXIONG WANG ZHONGZHONG, July 9, 1986: CN85109333

A driving circuit for a brushless DC motor having a small amount of torque ripple comprises a magnetic pole position detecting circuit for detecting positions of magnetic poles of a rotor magnet and delivering polyphase signals indicating the positions, a rectifier adder circuit for producing a sum ...