At 17:57 28/06/01, you wrote:
>At 01:34 PM 6/28/01 -0300, you wrote:
> >
> >    what are the most common/ordinary h-bridge chips? I think National makes
> >it, but I can't find it here on my city. I live in Brazil.

Why do you need an H bridge? Do you need to reverse quickly? If not then it
might be cheaper to use a relay to reverse the motor. Then you could use a
single FET to control the motor using PWM.

I'm working on such a design at the moment, and probably will use a LTC1624
or maybe a CS4124 from On semiconductors.  I have a .pdf of an application
note. Email me off-list if you want a copy.

Regards,

John

-----------------------------------------------
John Lawton Electronics
Custom Electronics Design & Development
design@jle.co.uk   http://www.jle.co.uk
-----------------------------------------------

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