Re: [CAD_CAM_EDM_DRO] L298 smoking

Don't allow it to get hold of the lighter or matches!!

----- Original Message -----
From: "ajv2803959" <antonio-ximenez@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, April 26, 2002 12:12 PM
Subject: [CAD_CAM_EDM_DRO] L298 smoking


> Some time ago posted a message in order to get help to repair a board
> with l297/l298 combo. The problem was a short circuit between phases.
>
> I have replaced 3 times the L298 chip without sucessfully result.
> If I connect the board without stepper everything looks like OK.
> But when I connect the stepper after 2 seconds more or less L298
> smokes itself. I am not sending steps at all, only I am giving power
> at board.
>
> I have tested diodes and they are OK.
> I am begining to suspect of L297. Does it some sense ?
>
> Some advice will be welcome
>
> Thanks in advance
>
>
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