Re: [EVGRAY] Re: Neutral spike

Body

Exactly Ole,  else there would be no brushes left or FET's

On 11/23/2018 9:07 AM, [email protected] [EVGRAY] wrote:
>  
>
> Hi Ron,
>
> If setting the video speed at slowest level it looks like a gradual
> speed down to a halt and then speeding up again in the opposite
> direction. It doesn't look like hard bouncing off a wall without a
> pause. Of course there is still a lot of mass to decelerate. The motor
> may just be shorted to dissipate the energy before making the
> reversal. This equals the back EMF (i.e. the generating voltage) which
> is the supply voltage minus the small motoring part of the voltage. A
> full reversal is huge compared to that.
>
> Regards
> Ole
>
>
>
> ---In [email protected], <iron1of1@...> wrote :
>
> Hi Norman and all,
>
> Yet DC motors are built to handle constant reversal...
>
> https://www.youtube.com/watch?v=pzsQnKJGYtk
>
> The machine I ran only had a 20 foot table but it would run like this
> all day.
>
> Ron
>
>