Digest Number 19
Archiver
Posts: 46,084
>
> Pin 9 of the ULN2003 should be connected to +12. Allegro provided
> internal transient protect diodes making back EMF diodes unnecessary if
> this is done.
>
I thought it did but the only diagram I had was Parallax's stepper motor
interface which had it shown no connect. Not sure why they did not use it.
> Pin 9 of the ULN2003 should be connected to +12. Allegro provided
> internal transient protect diodes making back EMF diodes unnecessary if
> this is done.
>
I thought it did but the only diagram I had was Parallax's stepper motor
interface which had it shown no connect. Not sure why they did not use it.
Comments
I saw that...they must have goofed.
Regards,
Ray McArthur
Original Message
From: Mike DeMetz <miked@t...>
To: <basicstamps@egroups.com>
Sent: Monday, April 17, 2000 9:14 AM
Subject: Re: [noparse][[/noparse]basicstamps] Digest Number 19
>
> >
> > Pin 9 of the ULN2003 should be connected to +12. Allegro provided
> > internal transient protect diodes making back EMF diodes unnecessary if
> > this is done.
> >
>
> I thought it did but the only diagram I had was Parallax's stepper motor
> interface which had it shown no connect. Not sure why they did not use it.
>
>
>