Re: Bullet-Proof G201 / G210

seperate 470cap terminals.


Putting wire and the caps together is a PITA.

How about pins for a remote, panel face LED instead of the on-board
LED ?


Dave




--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Bernard R
<bwjarandall@c...>" <bwjarandall@c...> wrote:

> Mariss,
>
> I don't use 201, instead I use 320s, but in either case does size
> matter? Compared to the rest of the components that go to make up
> the power part of the system the controllers are tiny. This is one
> case where I feel bigger is better. A major frustrations I had was
> trying to get reasonable size power wire into the terminals with a
> 470uF cap, difficult when new a real PITA if they ever have to be
> refitted.
>
> If you were to ever upgrade the 32xs to 200 V I would be one of

your

> first customers.
>
> Bernard
>
> > Terry,
> >
> > The problem there is the MOSFETs. We use IRF530s which are 100V
> > rated, the next size up is 200V. The physics of MOSFETs is if the
> > voltage doubles then the "on" resistance quadruples, meaning the
> chip
> > size must quadruple in order to get the same "on" resistance.
> >
> > That requires a much larger TO-247 package, blowing the whole

thing

> > out of the water. Furthermore, many motor mfgs. now rate their
> motors
> > with a maximum operating voltage, usually around 65V.
> >
> > Mariss
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "James Owens"
> > <wotisname@l...> wrote:
> > > Hi Mariss,
> > >
> > > If this is a complete redesign why not up the max Voltage to
> about
> > 100?
> > >
> > > Regards,
> > >
> > > Terry
> > >
> > > > > This is a "clean sheet" redesign so now is the time for it.