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RE: reversing a 12v line - number of relays?
At 08:38 AM 6/3/03 +0100, xslash@xxxxxxx wrote:
> are there any damaging effects by shorting the motor? (as in supplying
+12v to
> both terminals of the motor?)
The motor will be fine.
The spinning motor creates back-EMF so as the contacts open there will
momentarily be a high voltage across the motor terminals. As the
contacts open and close this can cause arcing.
For you application I can't see this being a problem, but you may want
to choose relays that are rated for controlling inductive loads. Also
you may need some form of interference suppression.
Nick.
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