Re: [CAD_CAM_EDM_DRO] Current and the L298

Sure, just don't use the L298. Put some Mosfet drivers
on the L298 and use your favorite N type Mosfet in
an H bridge. Or create a negative power supply and
use a P type for the upper part of the bridge and an N type Mosfet
for the lower part of the bridge which will eliminate
the need for the Mosfet driver. You'll just use a transistor
or optoisolator to turn the Mosfet gates on via the L297.

I just built some 10 amp drivers using an L297 and IRF540
Mosfets using IR2103 drivers. Next rev gets a 16F628 PIC
microcontroller instead of the L297.

later,
Larry E.

----- Original Message -----
From: "David E. Queen" <daque@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, August 18, 2001 10:28 PM
Subject: [CAD_CAM_EDM_DRO] Current and the L298


> Is there a easy way to get more current using a L297/L298 chipset? I need
> about 5 amps for the free 200 oz/inch steppers I found.
>
> No need for me to invent something if its been done before.
>
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