怎么使用L298和L297进行步进控制

大家好，我的名字是Cosimo，我需要有关步进驱动程序的帮助。

从一台旧打印机我得到了一个双极步进器，现在我正试图用L298和L297配置驱动它。步进输出，L298的输出为：0V 12V 0V 12V。没关系！但是对于电机，L298的输出为：6V 6V 6V 6V。为什么这个？
测试L297输出我没有电机：引脚4 0V，引脚6 4.4V，引脚5 4.4V，引脚7 0V，引脚9 4.4V，引脚8 4.4V。

测试L297输出我用电机：引脚4 0V，引脚6 4.4V，引脚5 2.2V，引脚7 0V，引脚9 4.4V，引脚8 2.2V。


提前致谢。

科西莫
＃L298-L297



以下为原文




Hi to all, my name is Cosimo and I need help about stepper driver.

From an old printer I've get a bipolar stepper and now I'm trying to drive it with L298 and L297 configuration. Whitout the stepper the output of L298 are: 0V 12V 0V 12V. It's ok! But with the motor the output of L298 are: 6V 6V 6V 6V. Why this?

Testing the L297 output I've without the motor: pin 4 0V, pin 6 4.4V, pin 5 4.4V, pin 7 0V, pin 9 4.4V, pin 8 4.4V.

Testing the L297 output I've with the motor: pin 4 0V, pin 6 4.4V, pin 5 2.2V, pin 7 0V, pin 9 4.4V, pin 8 2.2V.


Thanks in advance.

Cosimo  
#l298-l297