Re: +/- 10 V To Step/Dir Converter Circuit

--- In CAD_CAM_EDM_DRO@yahoogroups.com, cnc002@... wrote:

>
>
> In a message dated 3/12/2007 5:03:03 A.M. Eastern Daylight Time,
> riet91@... writes:
>
> Hi All,
>
> Does anyone know about such circuit or IC which
> converts analog +/-10 V into Step and Dir Signals?
>
> regards
>
> Babar

It would be a simple circuit to make up.

is the +10 and -10v a floating value ? like would the motor move
slowly at 5volts and faster at 10 volts ?

or, would it be either 10V or zero or -10v ? and nothing in-between ?

Using a comparitor to look for anything over say 9 volts and if it
were over 9 volts, it would then send out a pulse train.

everything between +9v and -9v would be zero and not move. as -9v the
same thing would happen, but also the DIR would change.

Pretty easy circuit if that is all you need.

What is misses is any ramping or accel or decel, and it also misses
any speed controls at all.

I think one would benifit from knowing what the voltage signal came
from as a means to better design a circuit.

Dave