Re: Power supply for Servos - dump speed

> 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