Re: H-Bridge motor control confusion....
- From: "TuT" <edwarddotwilsonatbaesystemsdotcom>
- Date: Mon, 18 Dec 2006 15:38:27 -0000
<james_w_costello@xxxxxxxxxxxx> wrote in message
news:1166416373.321201.209410@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I'm trying to build an H-bridge circuit to control a 12V DC, 2.5A motor
from the DAC (0v~5v) output of an Atmel micro controller. I've looked
at lots of designs of h-bridge, even tried doing some examples in
Crocodile Technology. But things just don`t seem to work...
Can anyone help... open to any suggestions. I`m not thinking of trying
a L298, but not 100% convinced!
What exactly are you attempting to do with the motor? If you just want to
turn it on and off and be able to drive in either direction, then a device
such as the L298 will enable you to do that, accepting TTL level logic
inputs and containing the necessary internal circuitry to generate the high
side drive.
If you want progressive control of the motor, you will either need to
implement a PWM system, or use a different output drive circuit that
facilitates linear control. If you do require progressive motor control,
you will almost certainly also require some feedback mechanism, unless your
application is sufficiently crude that you can do it open loop.
--
T
If it's not broken, don't fix it.
.
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- H-Bridge motor control confusion....
- From: james_w_costello
- H-Bridge motor control confusion....
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