| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent step-out and obtain high output torque during the synchronous operation of a single-phase AC synchronous motor. <P>SOLUTION: In the single-phase AC synchronous motor 1 having triacs tr1 and tr2, serially connected between a motor coil 30 and a single-phase AC power supply 2, a control part 19 turns on gate trigger signals of the triacs tr1 and tr2, delaying a timing by θ1 as an electric angle from the zero-cross point of the voltage of the single-phase AC power supply 2 at every half period of the voltage periods of the single-phase AC power supply 2, and turns off the gate trigger signals, delaying a timing by θ2 (>θ1) degree as the electric angle. <P>COPYRIGHT: (C)2012,JPO&INPIT |
