Re: what alim for my servos - capacitor

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

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "mataf01"
> <patrick.damien@s...> wrote:
> >
> > Hi everybody,
> > Here is my problem:
> > I'm planning to by 3 DC brushed servo motors.

Hi Dave,

Thanks a lot for this cristal clear information,It will really help
Regards, Patrick

>

>
> Since you are using 50 hz power, the formula is
>
> ( 100,000 times amps ) / voltage
>
> assuming you use a 48 volt transformer, you get 67 volts.
>
> assuming you have a 750VA transformer at 48 volts, and assuming

750va

> is 750 watts, then 750 / 67 = 11.2 amps.
>
> so, 100,000 times 11.2 = 1,120,000
> 1,120,000 / 67 = 16,716uF
>
> The capacitor should be rated for 100 volts or more.
> using multiple capacitors is fine.
>
> Using 20,000uF is fine.
>
> more reading
> http://www.geckodrive.com/ycom/documents/C163R16_power_supplies.pdf
>
> But, I don't think he lists the 100,000 for 50Hz although it is
> listed as 80,000 and assumed it is 60hZ.
>
> Dave