| 摘要 |
PURPOSE:To eliminate the effect of dispersion of D/A converters by bringing the number of the D/A converters to be used to one by changing over and outputting outputs from the D/A converters by using a switch. CONSTITUTION:Data are outputted to each phase A, B while conforming to the quantity of a stepping motor shifted from a microprocessor 1. Data at phase A are protected by a latch circuit 2 and data at phase B by a latch circuit 3. Outputs from the latch circuits 2, 3 are connected in parallel with a D/A converter 4. An analog switch 5 interlocking with an output allowable signal from the latch circuit 2 and an analog switch 6 interlocking with an output allowable signal 12 from the latch circuit 3 are connected to an output from the D/A converter, and data at phase A and data at phase B are each selected and driving circuits 7, 8 are driven. |
