RE: [CAD_CAM_EDM_DRO] Re: air bearing spindle for sale

Hi Jon,

You could always build one out of discrete components, or maybe a PIC? You
have step and direction, these signals could run a counter up and down to
adjust a count value to be compared with a running counter. This would give
you PWM.

Alan KM6VV

> >
> I've been thinking about this for a long time. I have a rough idea how to
> make one of my stepper controller boards into a PWM generator for
> 2- and 3-phase PWM drives. Then, just run it through sufficient channels
> of PWM drivers.
>
> Micro Linear had a GREAT chip for this, but they discontinued it. The
> ML4421
> and later 4423.
>
> Jon
>