| 摘要 |
PURPOSE:To simplify the circuit configuration of a drive device by performing the generation of a stepwise output signal and the control of distributing to four phases by one counter. CONSTITUTION:A counter 3 is set to up- and down-counting modes by a control signal S(c) from a microcomputer 1. A stepwise output signal is generated through a reversible counter 4 and a D/A converter 5 by the outputs 2<0>, 2<1>, 2<2>, 2<3> of the counter 3. The outputs 2<3>, 2<4> of the counter 3 are input to a gate circuit 8 to control to distribute to four phases. The gate circuit 8 outputs by inputs S(a), S(b), S(d), S(e) exciting signals of A, inverted A, B and inverted B phases, respectively. |
