"Peter L. Peres" wrote:

> The L293 has bipolar switches and I do not think that they will conduct in
> reverse.

Diodes are needed for the L298 see circuit diagram at my web site
http://hans-w.com the cnc page

If the voltage is high enough the bipolar semi will break down and the conduct
very well :-)

hansw

>
>
> Peter
>
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