| 摘要 |
PURPOSE:To enhance the efficiency of a DC brushless motor with one rotor- position detector and in one phase system, by making a state non-conductive with the initiation and the termination of a conductive period per phase. CONSTITUTION:From a position detector 10, the output of signal in relation to mutually opposite phase is generated, and the signal i directed to a gate circuit 50 and a comparing circuit 30 for input. AC signal for generating a conductor pattern 20 is also directed to the comparing circuit 30 for input. The output of the comparing circuit 30 is applied to a counter circuit 40. The output of the counter circuit 40 is applied to the gate circuit 50 via an OR circuit 53, and from the gate circuit 50, the output of excitation-winding- conductive signal for making a state non-conductive with the initiation and the termination of a conductive period is generated. |
