图1为常用的步进电机双压驱动器电路。它的优点是:对电机的矩频特性改善较大,功耗低,以及电机的运行有抑制宽度小于10~1～10~2μs的脉冲干扰能力。电路的缺陷是:高反压功率营BG_1、BG_2价格高和容易损坏。因此,保证功率管安全工作,不仅可以大幅度地提高电路的可靠性等技术性能,而且有经济价值。下面就此问题作一探讨和介绍。 Figure 1 for the common stepper motor dual voltage driver circuit. Its advantages are that the torque-frequency characteristics of the motor are greatly improved, the power consumption is low, and the operation of the motor is capable of suppressing the pulse interference with the width less than 10 ~ 1 ~ 10 ~ 2μs. Circuit defects are: high back pressure power camp BG_1, BG_2 high price and easy to damage. Therefore, to ensure the safety of power tube work, not only can greatly improve the reliability of the circuit and other technical performance, but also has economic value. The following questions to make a discussion and introduction.