Re: Thoughts on PC Based Control Retrofit....Power Supply, advice?

Hi Jon, Marty,

How about a bleeder resistor, 5K ohms, 10W? across the cap? Where did
you find 'em (xfmrs)?

Alan KM6VV


Jon Elson wrote:

>
> admin@... wrote:
>
> > --- In CAD_CAM_EDM_DRO@y..., "Marty Escarcega" <escarcega@h...> wrote:
> > > Ok, I have found some 44VCT 11A transformers for my series I
> > > retrofit. Coupled with a 35A 1000V Bridge Rectifier and a
> > > 14000MFD 75V Capacitor for each motor, do you folks think this
> > > should be a good power supply? By my calculations, I should have
> > > about 62VDC.
>
> This should work fine. You might put a very small resistor either in series
> with one of the transformer secondary leads, or one of the bridge rectifier
> leads, to reduce the current surge. Something of a few tenths of an Ohm
> would probably be right. Otherwise, it should be fine. You may need a
> little more capacitance there, you will have to evaluate the voltage ripple
> when the stepper driver is drawing the maximum current.
>
> Jon
>
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