| 摘要 |
PURPOSE:To make a drive circuit a simple structure controlling either one of multiple step motors to stop when the other one is driving, by providing a changeover means to output driving voltage for the one output and holding voltage for the other output. CONSTITUTION:A voltage output circuit 2 as a voltage output means equipped with a changeover means outputs in changing over the driving voltage or holding voltage from the two output terminals A and B of a control circuit 1 based on the drive command signal of the control circuit 1. In response to the drive command signal to drive the first step motor 4, high DC voltage from its output terminal A is outputted, while low DC voltage is outputted from the output terminal B. In response to the drive command signal to drive the second step motor 6, the low DC voltage is outputted from its output terminal A and high DC voltage from its output terminal B. |
