| 摘要 |
PURPOSE:To alleviate a limit in an available environmental temperature of a stepping motor and to use it even in a high temperature environment by absorbing a counterelectromotive force of a coil of the motor by breakdown of a Zener diode and suppressing heat generation from the motor. CONSTITUTION:A drive circuit for a stepping motor in which a counterelectromotive force exceeding a predetermined voltage, generated from coils L1-L4 of a stepping motor M is absorbed by breakdown of a Zener diode ZD provided in parallel with the coils. |
