Re: Re: Motors

Brian Fairey wrote:

> From: Brian Fairey <bfairey@...>
>
> I read somewhere that you can drive these motors at up to 10 times their rated voltage?
> Brian.

You would normally have a higher voltage going into the driver than the rating on the
motor. If it is a 'chopper' type drive, then the voltage could be as high as the driver
is designed for, the driver will control motor current to keep it at a safe level.
Higher voltage at the driver will allow somewhat higher motor speed, as the higher
voltage allows the inductance of the motor coils to change current direction faster.

A resistive driver can also benefit from higher voltage, but the resistors burn up a
lot of energy as heat.

Jon