Re: Power supply for Servos - dump speed

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<dave_mucha@y...> wrote:

>
>
> > gecko group, files, g201, returned energy.pdf Read it carefully
> the
> > second graph applies. It shows it takes .8 seconds for power to
> > return to normal in a torture test.
> >
> > Wally
>
> I'm not sure if I follow the picture.
>
> The peaks show rectified AC, so there would be 120 peaks per

second.

> Less than half of each peak has a voltage rise,
>
> The DC bus shows the voltage rise of the power supply and in the

back

> EMF mode, it shows the DC voltage rising to be above the desired
> threshold.
>
> So, there are 240 intersections, 120 where it rises above the
> threshold, and 120 where it drops below.
>
> since it appears that just under half of the time, the voltage is
> above the threshold, we can determine that 1 second divided by 120
> peaks is 0.008333. Therefore each rise would occur every 0.008333
> seconds and last for half of that.
>
> The rise above the line shows the rise, but it does not show at

what

> point the comparitor circuit engages. It does show the dump to be
> very abrupt, at almost 1/10 of the half wave or 0.000833 seconds.
>
> Dave

Are you sure you are looking at the "returned energy.pdf" I see
there are 2 similer folder names. check here



gecko group, files, g201 and 210, returned energy.pdf

Do not look in folder called just g201.

Wally