On Mon, Feb 04, 2002 at 10:05:35AM +1100, Roman Black wrote:
> juan manuel garofalo wrote:
> >
> >                 +24 v
> >         |               |
> >         |               |
> >       fet_1           fet_3
> >         |               |
> >      (a)|-----motor-----|
> >         |               |
> >         |               |
> >       fet_4           fet_2
> >         |               |
> >         |               |
> >
> > Hi there,
> >
> > Suppose that the bridge depicted is used to only to reverse the motor, not
> > using PWM.
>
>
> Have you considered using a relay to reverse the
> motor, and ONE fet to control the speed via
> PWM? This offers benefits in simplicity,
> efficiency, cost, size etc.

Roman, I love your consistency.

I asked the same question a few months ago. You gave the same answer.
I ended up using some $2 auto relays from all electronics. Works like a
champ.

BAJ

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.