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Author Topic: Idle valve blew a step driver?????  (Read 18532 times)

Offline smurfinator

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Re: Idle valve blew a step driver?????
« Reply #15 on: January 09, 2009, 12:11:04 am »
Quote from: lugnuts on January 08, 2009, 11:25:23 pm
Sorry for the basic question, but I was un-aware the Stepper outputs could even pull a ground?

I thought when you invert the output, it changed OFF to ON, and vise versa??? Am I nutty?

Beats me.  I just do what smarter guys tell me to do.
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Offline GintsK

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Re: Idle valve blew a step driver?????
« Reply #16 on: January 09, 2009, 03:16:23 am »
Stepper chips output consist from two opposite transistors: NPN and PNP. So it can pull to Ubatt and also to ground.
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