Re: [CAD_CAM_EDM_DRO] L297 and L298

Someone asked this on Monday too. Here's my reply (paraphrased):

From: John Johnson <johnatl@...>
Date: Mon Oct 20, 2003 19:53:35 US/Eastern
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Want some help about L297 chip
Reply-To: CAD_CAM_EDM_DRO@yahoogroups.com

The data sheet shows a 22k and a 3.3nf (0.0033uf) capacitor. So that
should be a good starting point. That's what I'm using on my drivers,
and they work fine. (I'm using L298 drivers.)

Remember to use non-inductive sense resistors. These can be high-dollar
items in high wattages, so I used smaller wattage, less expensive ones
in parallel.

Data sheets for your L297s can be found here:
http://www.micromouse.co.uk/datasheets/
or at http://www.st.com

In particular, the Application Notes sections in the Data Sheets give
you some good starting points.

On Friday, Oct 24, 2003, at 15:14 US/Eastern, Bard wrote:

> Hi all
>
>
>
> I need to build a Stepper Motor Driver. I will make a circuit with
> L297 and
> L298. I read the datasheet but I dont know how many Hz I have to use in
> Chopper. Can anyone help me with this circuit???
>
>
>
>
>
> []'s
>
>
>
> Bard
>
> [Non-text portions of this message have been removed]
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